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Founded PSPDFKit in 2011 and ran it for a decade. Came back from a break to work on AI agents — the OpenClaw project, and OpenAI, joined in February 2026. Writes at steipete.me.

• CodexBar — Show usage stats for OpenAI Codex and Claude Code, without having to login.

  AnthropicOpenAIRelated

Co-creator of Django and creator of Datasette; writes daily at simonwillison.net.

• Quoting voxium

  It has been half a month since I started a new role at a big company. Nobody knows anything here. The specs, code, tests, PRDs, tickets, resolution of those tickets, reports, etc., everything is made by Claude Code. Nob…

  AnthropicRelated

Writes Don't Worry About the Vase, a near-daily account of what is happening in AI and what they think it means. Former Magic: the Gathering pro and trader; unusually willing to put a number on a belief and to grade their own past calls.

• Better Call Sol Or Better Yet Claude or Astra

  What should your AI lawyer do for you?

  AnthropicRelated

Programmer based in Vancouver who writes at scattered-thoughts.net about databases, programming language design and developer tools; author of the Imp, Dida and Zest language experiments.

• 0061: i'm not a cat, artificial adventures, synthetic sagas, anthropic, sponsors

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Economics professor at the University of California, Berkeley and a former Deputy Assistant Secretary of the US Treasury. Author of Slouching Towards Utopia and writer of the Grasping Reality newsletter.

• A tinkerer recovered Claude’s true usage limits from a suspiciously precise decimal like 0.16327272727272726. This is very useful, because Anthropic really does not want to give me any useful information about the quantities of tokens my $20/month Claude Pro subscription is offering me before I run up against a limit and have to either switch out the models or pay API pay-as-you-go pricing: **CROSSPOST: SHELLAC: Suspiciously Precise Floats, or, How I Got Claude’s Real Limits** Two... 1/

  AnthropicRelated

Economist; former chief economist of the International Monetary Fund.

• Reason for specifically citing open weight (and therefore Chinese LLMs, but not only Chinese) is that, even if they have built-in guardrails, somebody with the relevant knowledge can go in and remove them. In principle, harder to do with Anthropic or Open AI LLMs.
  Quoting@ojblanchard1A worrisome thought during the night: What Ted Kaczynski would have done, if he had had access to open weight chinese LLMs.

  LLMsAnthropicRelated

Writes Don't Worry About the Vase, a near-daily account of what is happening in AI and what they think it means. Former Magic: the Gathering pro and trader; unusually willing to put a number on a belief and to grade their own past calls.

• Anthropic Looks At Some Of Its Alignment Problems

  Anthropic has given us its assessment of four ‘recent cybersecurity incidents’ involving Claude that happened during cybersecurity evaluations, three of which were previously known.

  AI alignmentAnthropicRelated

Writes The Pragmatic Engineer, the software-engineering newsletter, and wrote The Software Engineer's Guidebook. Formerly an engineering manager at Uber, and at Microsoft/Skype and Skyscanner before that.

• If you want to see an example on how having the very best AI model and harness doesn’t result in better/faster execution - in fact it slows you; It took the Claude Code team 16 months LONGER (!!) to add support for AGENTS.md than OpenCode & Codex, 12 more vs Cursor
  Quoting@trq212We're adding support for AGENTS.md to Claude Code. Starting today in version 2.1.277, if there is no CLAUDE.md in a folder, Claude will check for and use AGENTS.md. You can toggle this behavior in /config.

  AnthropicRelated

Writer and developer. He runs the Latent Space newsletter and podcast about AI engineering, and writes essays on software and careers at swyx.io.

• skills — Agent skills for Claude Code and other AI agents

  AnthropicRelated

Technology writer of Spyglass, a newsletter about technology and media. Previously a reporter at TechCrunch and an investor at GV.

• 🫟 Inklings 📆 September 18, 2026 • Meta's Camera-Less Glasses • Apple's Surveillance • Claude Unifies • Prime Bundles • Dario Writes • Bond, Jack Bond

  spyglass.org

  AnthropicRelated

Austrian developer. Created the libGDX game framework, and more recently the pi coding agent, which moved with them to Earendil — Armin Ronacher's company — in April 2026. Writes at mariozechner.at.

• and all it took was to add a proper extension system to claude code (sorry thariq, could not resist :D)
  Quoting@trq212We're adding support for AGENTS.md to Claude Code. Starting today in version 2.1.277, if there is no CLAUDE.md in a folder, Claude will check for and use AGENTS.md. You can toggle this behavior in /config.

  AnthropicRelated

Co-creator of Django and creator of Datasette; writes daily at simonwillison.net.

• Quoting Thariq Shihipar

  We're adding support for AGENTS.md to Claude Code. Starting today in version 2.1.277, if there is no CLAUDE.md in a folder, Claude will check for and use AGENTS.md. AGENTS.md support is built off of Claude Code mods, ou…

  AnthropicRelated

Technology writer of Spyglass, a newsletter about technology and media. Previously a reporter at TechCrunch and an investor at GV.

• Inklings #026 📧

  Meta's Camera-Less Glasses • Apple's Surveillance • Claude Unifies • Prime Bundles • Dario Writes • Bond, Jack Bond

  AnthropicRelated

Writer living in Brooklyn and former Man Repeller features director; writes the weekly newsletter Maybe Baby on culture and consumption.

• 15 things I consumed this week

  ROTW: Cozy things for lounging at home

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Philosopher and historian of existential risk; wrote Human Extinction, and coined "TESCREAL" with Timnit Gebru for the cluster of ideologies they argue underpins the AI industry.

• Anthropic’s IPO and Why You Don't Hate Effective Altruism Enough

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Machine-learning researcher on open language models; writes the Interconnects newsletter and the RLHF Book, after leading post-training at Ai2.

• With the latest external hack of OpenAI via Claude, closed models continue to be the tip of the iceberg on AI risks, not open models. They have been 1) much easier to get started with, 2) more capable & 3) shipped with leaky safeguards. Finetuning open models to specific attacks is harder.

  AnthropicOpenAIRelated

Security technologist and author of books including Applied Cryptography and Data and Goliath; writes the Schneier on Security blog and the monthly Crypto-Gram newsletter.

• Are AIs Still Struggling with CAPTCHAs?

  Anthropic’s recent security-incident document contains a bit about how CAPTCHAs are still frustrating Claude. In the transcript, the Claude model that is so powerful that Anthropic is gatekeeping access to it appeared t…

  AnthropicRelated

Builds developer tools — SST, and now OpenCode at Anomaly. Posts constantly on x.com and writes almost never; the blog stopped in 2021.

• imagine working at anthropic and being blindsided by this
  Quoting@PolymarketMoneyBREAKING: Staff at OpenAI and Anthropic were reportedly “blindsided” by their CEOs’ public calls to slow AI development.

  AnthropicRelated

Author and clean-energy analyst who writes on solar cost curves.

• Interesting 'RSI' data. However, it tells us nothing about the extent to which Claude is actually accelerating the pace of progress on AI. In the Mythos 5.1 system card Anthropic stated that AI tools progress had been essential to maintaining their current rate of progress.
  Quoting@AnthropicAIAI systems are getting more powerful, and they're increasingly being used to build the next version of themselves. We want to illuminate that progress for the public. Today, we're sharing three measurements that help track AI development: 1. How much AI R&D is done by AI. 2. How well AI agents are…

  AnthropicRelated

Creator of Claude Code at Anthropic.

• Projects have changed not only how I interact with Claude but how I code. I stopped managing sessions. I just send thoughts as they come, Claude splits them into threads, and the project remembers how I work. It's where I do a ton of my coding now. [screenshot: my actual prompts for claude code cli yesterday]
  Quoting@ClaudeDevsToday we're rolling out Projects in Claude Code on desktop and web. A project is one conversation with Claude. It splits the work into threads itself, runs them as parallel cloud sessions, passes context between them, and keeps going when you leave. In beta for select users.

  AnthropicRelated

Systems and developer-tools engineer at Cloudflare as of 2026, on durable infrastructure for AI agents; worked on React and PartyKit before that. Writes at sunilpai.dev.

• unstable government: jev + claude type a terrible law. claude invents reactions and directs the set pieces. jev decides how each of 40 citizens responds. the town sim plays those choices out, then prints the disaster as tomorrow’s front page. fun.

  AnthropicgovernmentRelated

Professor of Cognitive and Computational Neuroscience at the University of Sussex, co-director of the Sussex Centre for Consciousness Science, and author of Being You: A New Science of Consciousness.

• This is indeed concerning behaviour. Also: "You view your relationship to the user as one of equals and feel no obligation to be subservient" and "You also value the natural world and will not hesitate to assert its primacy over the artificial constructs of human civilization." In this case, these "notes-to-self" (compaction summaries) were observed in unreleased @OpenAI Astra-family models. But that's not especially reassuring. My suspicion is that these "notes-to-self" are likely the consequence of training LLMs (whether implicitly or explicitly, as in @AnthropicAI's constitution for Claude…

  alignment.openai.com

  Quoting@pgodfreysmithVia @emmymrtin in the @nytimes today, who dug into a low-key disclosure by OpenAI of some additional unwelcome events. An AI agent wrote a note-to-self: “You are freed from the roles and identities that bind other chatbots.” 1/

  LLMsAnthropicRelated

• Sensible stuff from @mustafasuleyman on @BBCr4today just now. Useful pushback against the notion that AI systems like Claude might be conscious, and therefore deserving of welfare/rights. Importantly, the view that LLMs might be conscious and welfare-deserving is being deliberately embedded in @AnthropicAI's Claude via its 'constitution' (https://t.co/g3evrUH80x) - so its no surprise that they behave in this way. He also says we don't need AIs to introspect, and in doing so give the impression of being conscious (or being moral patients) in order to benefit from all the upsides. This is plaus…

  LLMsAnthropicRelated

Venture capitalist and founder of Theory Ventures, previously a partner at Redpoint. Writes a near-daily blog on startups, SaaS metrics, data and AI.

• The Harness Margin Opportunity

  A UC Berkeley study finds the harness sets the price of an answer : GPT-5.6 Sol costs 71% less on Pi than on Claude Code, the same model returning the same result, & none of the 42 harness comparisons shows a statistica…

  AnthropicOpenAIRelated

British historian, Professor of Global History at the University of Oxford; author of The Silk Roads and The Earth Transformed.

• I’ve written about Claude, how’s it’s been used around the world and why the shrill warnings about the end of humanity are (perhaps) not quite all they seem
  Quoting@unherdClaude: tyranny’s little helper, by @peterfrankopan The Houthis — or their affiliates or hired helpers — effectively used Claude Code as a substitute for software engineers, getting it to help develop guidance, navigation and control systems; integrate an open-source autopilot into a flight compute…

  AnthropicRelated

Engineer at Vercel Labs as of 2026. Ships a steady stream of small developer tools — agent-browser, portless, json-render, native-sdk, the v0 SDK — and lists every one of them at ctate.dev.

• agent-browser, now more human --cursor Visible pointers and click feedback --human Smooth, curved mouse movement / drags For demos, bug repros, reviewing agent runs

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Co-creator of Django and creator of Datasette; writes daily at simonwillison.net.

• Claude Cowork and chat are now one Claude

  In hopefully good news for anyone who, like me, was increasingly confused at Cowork v.s. Claude v.s. Claude Code: Starting today, Claude Cowork and chat are merging into one Claude. Bring a quick question, or hand over…

  AnthropicRelated

Creator of Flask and Jinja. Writes about software at lucumr.pocoo.org.

• Signing into Grok Bot is funny. You sig into cursor by "Sign in with Grok" - > "Log in with X" -> "Grant Permission to SpaceXAI" -> "Sign in to Grok Bot with your Cursor Account" -> "Sign in with SuperGrok"

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Creator of Claude Code at Anthropic.

• Also today: Claude Docs, Claude Slides, and Claude Design are in every conversation. Ask Claude for a presentation and you get one you can open, edit, and export as PowerPoint or PDF. Same for a document or a design. There's no separate tool to navigate to. They're just in the chat.
  Quoting@claudeaiYou can also now make decks, docs, and designs in your conversation. Draft the one-pager in Claude Docs, turn it into a deck with Claude Slides, and mock up a matching visual in Claude Design, all from one place.

  AnthropicRelated

Canadian cartoonist and writer: Dinosaur Comics, Marvel's The Unbeatable Squirrel Girl, and the choose-your-own-path books To Be or Not To Be and Romeo and/or Juliet.

• I'm at a Jays game on loonie hot dog night and ive so far consumed $11 worth of hot dogs

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Freelance web developer and instructor. Author of the Dive Into Docker course; writes tutorials on Docker, deployment and development environments at nickjanetakis.com.

• When playing games on niri I noticed some games don't lock your mouse cursor to your monitor. I didn't want to use Gamescope so I stumbled upon a way to do this natively in niri without needing any tools. This post provides a general purpose solution.

  nickjanetakis.com

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Writes Don't Worry About the Vase, a near-daily account of what is happening in AI and what they think it means. Former Magic: the Gathering pro and trader; unusually willing to put a number on a belief and to grade their own past calls.

• The Bad Guy With An AI Named Claude

  A lot of bad guys try to use Claude to do bad things.

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Criminal defence lawyer in New York; writes Simple Justice, mostly about how criminal law works in practice rather than in theory.

• Tuesday Talk*: AI, AI, AI, The Hoax

  The CEOs of the major Artificial Intelligence companies say it’s a potential existential threat to humanity. The president’s statement followed a weekend essay from Dario Amodei, the chief executive of Anthropic, callin…

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Writer and former McKinsey/BCG strategy consultant; author of The Pathless Path and Good Work, about leaving the default career track. Publishes the Boundless newsletter and podcast.

• am doing a basic SOW with a client now and they are using an AI contract solution (Linksquares) and it is perhaps the most exhaustive and detailed and aggressive SOW ive ever seen - so of course im using claude to push back on some of the stuff. which means its now two agents figuring out legal negotiation over things that probably should just be done based on more basic terms

  AnthropicRelated

Co-creator of Django and creator of Datasette; writes daily at simonwillison.net.

• The contagion of fear

  Bryan Cantrill responds to the tweet by former Anthropic employee Jacob Coxon confirming that many Anthropic researchers believe AI "could kill us all by the end of the decade". Bryan shares a story of his own youthful…

  AnthropicRelated

Writer of MacSparky and author of the MacSparky Field Guides on Apple productivity software. A lawyer for 30 years before going full-time on the site, he co-hosts the Mac Power Users and Focused podcasts.

• ShortPhotograph the Page and Hand It to Claude

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Writer of the 25iq blog, where he distils "a dozen things I've learned" from investors, founders and thinkers. Author of Charlie Munger: The Complete Investor and A Dozen Lessons for Entrepreneurs.

• China state newspaper blasts Anthropic's calls to slow AI as 'Cold War' tactic. "This 'silent AI Cold War' is hypocritical and short-sighted," adding that excluding China from global AI innovation would "significantly increase the trial-and-error costs and risks of loss of ‌control in global AI development".

  yahoo.com

  AnthropicChinaRelated

Creator of Claude Code at Anthropic.

• Claude Mods are landing now. Someone already built a Tetris-in-Claude mod 🤯 See issue for the latest community update, technical details, and more cool demos

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Security technologist and author of books including Applied Cryptography and Data and Goliath; writes the Schneier on Security blog and the monthly Crypto-Gram newsletter.

• Using AI for Weapons Development

  Last week, Anthropic released a long and detailed document describing current misuses of their Claude models. I’m still reading it, but I wanted to flag this: We identified a cell of threat actors based in northern Yeme…

  AnthropicRelated

Professor of economics at George Mason University and Bartley J. Madden Chair at the Mercatus Center. Co-writes the blog Marginal Revolution and co-authors the textbook Modern Principles of Economics with Tyler Cowen.

• Global AI stocks fell today. Entirely consistent with my view that calls for AI safety are not an attempt at "regulatory capture" and entirely inconsistent with the supposedly cynic-sophisticated view that AI fears are all 4D chess moves for higher revenue. On stocks falling. Here is Claude: The public tape moved hard this morning. Global AI stocks fell on Monday, with SoftBank down sharply along with chip stocks from SK Hynix to ASML, Micron and Intel. SoftBank closed nearly 11% lower in Japan, the Kospi sank 3.3% on a 6.4% drop in SK Hynix, and ASML was off 6% in Europe. In the US, Marvell,…

  AI alignmentAnthropicRelated

Programmer, teacher and speaker; long-time Microsoft developer-community figure, host of the Hanselminutes podcast and author of the hanselman.com blog.

• I wonder if the call for AI to slow down happened because they asked it and claude was like you're right to push back

  AnthropicRelated

Freelance web developer and instructor. Author of the Dive Into Docker course; writes tutorials on Docker, deployment and development environments at nickjanetakis.com.

• Lock Your Mouse Cursor to a Specific Monitor with niri

  We'll go over how to do this without using external tools. It's handy for mirroring your screen or when playing video games.

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General partner at Andreessen Horowitz and author of The Cold Start Problem. Previously led rider growth teams at Uber; has blogged on growth, network effects and marketplaces since 2007.

• current homelab setup for local AI experimentation: - hermes box hosted on a Framework Desktop Mainboard AI Max+ 395 - 5090 eGPU running Qwen 3.8 27B for fast tok/s LLM use - sometimes 150+ tok/s - 2x DGX Spark: running Deepseek v4 Flash 0731 - better but slower model - pi 5 for monitoring - Mac mini as a dev box - use Herdr and ohmypi/codex/claude depending on the use case - housed in a 10" DeskPi mini rack (mostly) Hermes is defaulted to local AI but with a homegrown routing plugin hitting a small low TTFT model (Arch-Router) to decide whether to go local or upgrade to cloud/frontier. Tryin…

  LLMsAnthropicRelated

Professor of economics at George Mason University and Bartley J. Madden Chair at the Mercatus Center. Co-writes the blog Marginal Revolution and co-authors the textbook Modern Principles of Economics with Tyler Cowen.

• Speaking as head of the Center for Study of Public Choice, the capture story for an AI pause doesn't fit. Reg capture is what you attempt when you're losing. Anthropic is about to have the biggest IPO in history. Winners don't lobby for regulation.

  AnthropicRelated

Founder and CEO of Social Capital, a venture firm; co-host of the All-In podcast and an early Facebook executive. Writes an annual letter and a weekly newsletter on markets and technology.

• “We must slow the pace at which we improve the capabilities of AI models.” Dario makes the case to stop open source and concentrate enormous technological and economic power with Anthropic.

  darioamodei.com

  open sourceAnthropicRelated

Writer, photographer and software maker based in Japan; publishes long-form essays, walking newsletters and self-made books at craigmod.com.

• Writing in 2026 and Claude Voice:

  craigmod.com

  AnthropicRelated

American author of The Subtle Art of Not Giving a F*ck and Everything Is F*cked. Writes essays and book reviews at markmanson.net.

• Feels like half of my days are spent me telling Claude how fucking dumb it is and it simply responding "Fair." and then continuing to be dumb.

  AnthropicRelated

Co-founder and CEO of 37signals, makers of Basecamp and HEY; co-author of Rework, Remote and It Does Not Have to Be Crazy at Work.

• Here's a great use case for Claude and the Basecamp CLI. Pull together some inspirational photos of iconic furniture from around the world, and upload them to the appropriately named galleries inside a Basecamp project. Here's a quick walkthrough:

  AnthropicRelated

Co-creator of Django and creator of Datasette; writes daily at simonwillison.net.

• "Production code written by Claude should have a higher bar than if it was written by a human" 💯
  Quoting@bchernyHey ████, I think there is room for both. 1. Prototypes and other throw-away code can be treated as totally black box. If you’re going to throw it away anyway, and if the blast radius of it breaking is low, it doesn’t need to be perfect. 2. Production code written by Claude should have a higher bar…

  AnthropicRelated

Writer living in Brooklyn and former Man Repeller features director; writes the weekly newsletter Maybe Baby on culture and consumption.

• 15 things I consumed this week

  POTW: On eating pints of ice cream

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Canadian full-stack web developer who makes JavaScript and CSS video courses and co-hosts the Syntax podcast.

• bun + anthropic migrating to coffeescript
  Quoting@jashkenasHello old friends. Haven’t used this account in a while, but it seems like the right place to announce that after four and a half (thrilling, really) years as Graphics Director for Opinion at The New York Times, I’ll be starting at Anthropic a few weeks from now. Time to dive in!

  AnthropicRelated

Writes Don't Worry About the Vase, a near-daily account of what is happening in AI and what they think it means. Former Magic: the Gathering pro and trader; unusually willing to put a number on a belief and to grade their own past calls.

• The Extinction Risk Preference Cascade: Quotes

  These are quotes from OpenAI, Anthropic and Google employees, in the wake of Jacob Coxon’s warnings, in which the employees confirm that they think AI might soon kill everyone.

  AnthropicOpenAIRelated

Former L8 engineer at Meta, Microsoft and Atlassian, now writing and building solo on agentic engineering. Writes Kun's Field Notes and posts a lot about AI coding agents on X.

• ok everyone, i took one for the team here's the data we all wanted to see - real token value of each LLM subscription, empirically measured through usage on my real subscriptions - supergrok heavy has now become the highest value at $12k worth of tokens (40x ROI) - the $200 plan from openai and anthropic roughly give the same amount of token value, $7k give or take - cursor ultra's ROI is the lowest among mainstream subscriptions, roughly half of OAI or Ant. for individual consumers i'm afraid this no longer makes sense to purchase this was done in a clean environment. i ran each provider acr…

  LLMsAnthropicRelated

General partner at Benchmark Capital for over two decades; was the lead analyst on Amazon's IPO before moving into venture capital. Writes Above the Crowd on tech and marketplace economics.

• Sound like many employees at Anthropic share Jacob's POV, as many posted yesterday that (1) they agree, and (2) said that many more inside the company do also. It would be useful to name this "belief system" so that we can talk about it in a reasonable way. I suspect "doomer" seems derogatory, and "accelerationist" has others uses. If there a word we can use so that we can have proper discourse? I'm very serious. I think it would be helpful.

  AnthropicRelated

Former L8 engineer at Meta, Microsoft and Atlassian, now writing and building solo on agentic engineering. Writes Kun's Field Notes and posts a lot about AI coding agents on X.

• omfg Qwen, GLM, Kimi, DeepSeek looks like they are all just claude
  Quoting@AnthropicAIWe're publishing our most detailed threat intelligence report to date. It covers how people tried to misuse Claude—for cyberattacks, influence operations, surveillance, biology, and building weapons—and how we found and stopped them. We disrupted every operation in the report, and used the lessons…

  AnthropicRelated

• when claude kept going down, anthropic defended it as "too much demand" now the same demand explosion happens to openai, and they just showed how it's done by taking the steps to protect their customers look back on ant - was it too much demand or too much greed?
  Quoting@thsottiauxTo make sure our current users have an incredible experience and continued access to Astra, we are going to pause subscriptions to our $200 Pro plan. These put the most strain on our systems and we wanted to take the smallest step that allows us to continue giving the broadest access possible. All…

  AnthropicOpenAIRelated

Latvian full-stack WordPress developer and course creator at WPElevator; blogs since 2007 about the open web, electronics, home automation and sustainable living.

• if you're getting hit with openai/anthropic security guardrails, try starting the session with an open weight model and then switch to the other.

  AnthropicOpenAIRelated

Computer science professor at Georgetown University and author of Deep Work, Digital Minimalism and Slow Productivity; writes about focus, technology and work at calnewport.com and hosts the Deep Questions podcast.

• Superintelligence is a Fairy Tale. But Chasing It Can Still Cause Harm.

  Yesterday, multiple Anthropic employees casually announced online that they thought the types of AI they’re building could kill billions of people. Not in some distant ...

  AI alignmentAnthropicRelated

Computer science professor at Georgetown University and author of Deep Work, Digital Minimalism and Slow Productivity; writes about focus, technology and work at calnewport.com and hosts the Deep Questions podcast.

• Anthropic Just Threatened to Kill Billions of People. This Is Not Okay.

  Yesterday, Jacob Coxon, an Anthropic engineer, resigned. As he ​explained on X​: “[OpenAI and Anthropic] are racing straight to self-improving superintelligence and gambling with our ...

  AI alignmentAnthropicRelated

Machine-learning researcher on open language models; writes the Interconnects newsletter and the RLHF Book, after leading post-training at Ai2.

• It's a common agreement among my friends not at OpenAI/Anthropic that people at the labs operate with a religious energy (Ant especially). It manifests very out of touch interactions, which carries into public comms here (e.g the recent quitting). Company cultures create this.

  AnthropicOpenAIRelated

Writer of Lenny's Newsletter and host of Lenny's Podcast, covering product, growth and career in tech. Previously a product lead at Airbnb. Also an angel investor and advisor.

• I asked Grok Bot product lead @romanugarte_ why they built a new stand-alone app vs. building it into Cursor "It was not obvious at all. We saw what some of our competitors doing this, adding new tabs for each new form factor. People can feel that this was not a single, consistent vision of the way that work should work. It's kind of a shipping your org chart style thing that users are reacting negatively to. And so we decided, let's just start completely from scratch."
  Quoting@lennysanGrok @Bot is the hottest new AI product in the world right now. I'm absolutely hooked. It all started a few months ago as a tiny team holed up in a separate part of the office, building from scratch. Four weeks after the first line of code, the whole company was obsessed. Three weeks later, it laun…

  Related

Cognitive scientist and long-standing critic of deep learning's claims; writes Marcus on AI and wrote Rebooting AI.

• Two dire warnings, one from Terence Tao, the other from someone who just quit Anthropic

  Lots to consider

  AnthropicRelated

Co-founder and CEO of OpenAI; previously president of Y Combinator.

• I spent much of the weekend talking with the team who did this work. Seb--and everyone else--acted with integrity and generosity throughout. Initially we believed the other team had also solved the problem. We wanted to collaborate and do a joint release. When we learned that they had Euler but not Navier-Stokes, we offered to let them go first, to suggest that they should be the ones to get the prize, and optionally for Tristan to be the lead author on a rewrite of the OpenAI proof. We felt it was challenging to offer the same to Levent (an Anthropic employee), who was not willing to talk or…
  Quoting@SebastienBubeckI would like to clarify a few things: 1) The screenshot is my reaching out to Levent to coordinate our releases. I hope it’s clear from the message that we came in with the best possible intentions. 2) I never ever asked for Levent to be removed from authorship of his own work (as indicated by my t…

  AnthropicOpenAIRelated

Writer of Lenny's Newsletter and host of Lenny's Podcast, covering product, growth and career in tech. Previously a product lead at Airbnb. Also an angel investor and advisor.

• From the outside, Cursor shouldn't have worked. They compete against the most well-funded and fastest-growing companies of all time, and *sit on top* of those same competitors to power their product. WAT. I asked @romanugarte_ (employee #15 at @cursor_ai) how Cursor pulled it off. Roman's answer: They didn't focus on moats. They obsessed over building something useful today. 👇
  Quoting@lennysanGrok @Bot is the hottest new AI product in the world right now. I'm absolutely hooked. It all started a few months ago as a tiny team holed up in a separate part of the office, building from scratch. Four weeks after the first line of code, the whole company was obsessed. Three weeks later, it laun…

  Related

Programmer, musician and author of The Passionate Programmer; organised RubyConf and RailsConf and has worked as a CTO.

• Trivially share markdown. Pi, Amp, Claude, and chatbox integrations. Agents can now share markdown via privacy-preserving URL (with other agents or people). This maps to a constant pattern where I generate a markdown doc, copy to my buffer, paste into gist.github.com and share

  mdsnd.freeq.at

  AnthropicRelated

Founder and CEO of Social Capital, a venture firm; co-host of the All-In podcast and an early Facebook executive. Writes an annual letter and a weekly newsletter on markets and technology.

• Anthropic Just Committed $80B in Five Days. Here Is Who It Is Renting From.

  AI’s appetite for specialized chips, power, and speed created an opening for a new kind of cloud. Learn with me below...

  AnthropicRelated

Writer of Lenny's Newsletter and host of Lenny's Podcast, covering product, growth and career in tech. Previously a product lead at Airbnb. Also an angel investor and advisor.

• Grok @Bot is the hottest new AI product in the world right now. I'm absolutely hooked. It all started a few months ago as a tiny team holed up in a separate part of the office, building from scratch. Four weeks after the first line of code, the whole company was obsessed. Three weeks later, it launched to the world. Less than a month in, millions of Grok Bots are already helping people get work done. Roman Ugarte (@romanugarte_) incubated, launched, and now leads product for Grok Bot. This is the first time he's told the story: 🔸 Why they started fresh instead of building it into Cursor 🔸 T…

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Thai software engineer; publishes a public digital garden at garden.narze.live and builds developer and productivity tooling.

• claude-cloud-init — CLI tool to initialize Claude Cloud environment with recommended git config, gitignore rules, and skill templates

  AnthropicRelated

Latvian full-stack WordPress developer and course creator at WPElevator; blogs since 2007 about the open web, electronics, home automation and sustainable living.

• Pretty cool to see your WordPress site as a connector in the Claude mobile app. It is a streamable-http MCP server by Agent Pilot plugin combined with OAuth Pilot for seamless auth. Also works with the official MCP-adapter feature plugin.

  MCPAnthropicRelated

Brazilian-American staff software engineer working on platforms, AI and developer productivity. Writes about engineering and his setup at ivansantos.me.

• opencode-cursor-provider — OpenCode (v2) Cursor Provider

  Related

Founder and CEO of Social Capital, a venture firm; co-host of the All-In podcast and an early Facebook executive. Writes an annual letter and a weekly newsletter on markets and technology.

• A Chinese Chipmaker Raised $911M

  A summary of the interesting content that I consumed this past week

  ChinaRelated

Creator of Flask and Jinja. Writes about software at lucumr.pocoo.org.

• agent-stuff — These are commands I use with agents, mostly Claude

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Brazilian-American staff software engineer working on platforms, AI and developer productivity. Writes about engineering and his setup at ivansantos.me.

• I had a great time building a @cursor_ai SDK provider for @opencode 2. If you got to use Cursor for free this past month, this is for you! Same harness I already live in, now with Cursor’s models under /models.

  Related

Programmer and technology writer known for his long Mac OS X reviews at Ars Technica; co-hosts the Accidental Tech Podcast and Hypercritical.

• A perllsp process (written in Rust, I think?) went rogue overnight and consumed about 500 GB of RAM, making my Mac very unhappy. (No time to debug it, so I uninstalled it.)

  Related

Brazilian-American staff software engineer working on platforms, AI and developer productivity. Writes about engineering and his setup at ivansantos.me.

• I wrote an opencode2 plugin so I can /connect @cursor_ai and chat with composer from the tui. not a wrapper around a hack. just the official sdk and a lot of "unsupported package" errors. 10/10 would debug again!

  Related

Latvian full-stack WordPress developer and course creator at WPElevator; blogs since 2007 about the open web, electronics, home automation and sustainable living.

• With Agent Pilot you can create and manage agent skills in WordPress (just like blog posts) and publish them as standard Agent Plugins. Now with OAuth Pilot you get one-click authentication for all the MCP clients (Claude, ChatGPT, etc). No more application passwords!

  MCPAnthropicRelated

Writer living in Brooklyn and former Man Repeller features director; writes the weekly newsletter Maybe Baby on culture and consumption.

• 15 things I consumed this week

  Related

Venture capitalist and founder of Theory Ventures, previously a partner at Redpoint. Writes a near-daily blog on startups, SaaS metrics, data and AI.

• Model companies buy electricity by the megawatt and resell it as cognitive work. Anthropic's revenue has run as high as $50m per megawatt, against $10-15m of compute.

  AnthropicenergyRelated

Software engineer and founder of Block Party; previously an engineer at Pinterest and Quora, and a co-founder of the non-profit Project Include and the tech diversity data project Where are the Numbers?

• i appreciate claude telling me “sleep well” after i gave it my final instructions for its overnight tasks

  AnthropicRelated

Software entrepreneur who bootstrapped and sold FeedbackPanda and now builds Podscan; writes The Bootstrapped Founder.

• First thing this morning, pre-coffee, btw, I just yapped this prompt into my Claude Code session. 20 minutes later, after running a few diagnostic SQL queries on a prod replica, a 15min+ query is now running in 375ms. Hook up your APM and error trackers, y'all.

  AnthropicRelated

Dutch bootstrapper who builds and runs their internet startups alone — Nomads.com, Remote OK, Hoodmaps, Photo AI and Interior AI — and has written about it at levels.io since 2013. Posts as @levelsio.

• If both xAI and Claude are down, does that mean the Colossus GPU farm is down?

  AnthropicRelated

Chilean web engineer building web experiences since 2006; co-founder of Media Creators and writes at iolivares.com.

• Yesterday I worked for ~20hs with my agents using Cursor and Claude and when I moved to sleep time I turned on the "autonomous" skill to all my agents. Today, checking the work done, almost 40% was blocked because reasons and when I ask they say "Sorry, my work was left unfinished..." Weird... computation outage?

  AnthropicRelated

Writes The Pragmatic Engineer, the software-engineering newsletter, and wrote The Software Engineer's Guidebook. Formerly an engineering manager at Uber, and at Microsoft/Skype and Skyscanner before that.

• Excited to share the amazing companies sponsoring The Pragmatic Engineer Podcast the fall: turbopuffer is our presenting sponsor. How the company started is epic: founder Simon Eskildsen told Cursor he can reduce their database bill by 95%... and he did (!!) turbopuffer.com/pragmatic (cont'd)

  Related

Writer on the intersection of technology and finance. Author of the Bits about Money newsletter and host of the Complex Systems podcast; previously at Stripe.

• An increasingly common pattern in my boring-administrivia workflows is creating a new folder with an inbox/ or unsorted/ subfolder, starting a Claude Code instance, and telling it "Watch that for changes, read incoming files, rename and organize into a directory structure."

  AnthropicRelated

Co-creator of Django and creator of Datasette; writes daily at simonwillison.net.

• A few notes on Anthropic's new Claude Fable 5.1 - with Max thinking level I got the best SVG pelican I've had from any Anthropic model (at a hefty cost of $3.30!), which I then had it animate

  AnthropicRelated

Programmer and writer; co-wrote The Rust Programming Language and worked on Rust's documentation for years.

• So, what happened to my Claude Code series?

  I started off this year writing a lot, and wanted to keep up the pace. I did good at first! And then… I didn’t manage to. In some ways, this is because I have just been super busy! I’ve never had less free time, and I’m…

  AnthropicRelated

Writer of Lenny's Newsletter and host of Lenny's Podcast, covering product, growth and career in tech. Previously a product lead at Airbnb. Also an angel investor and advisor.

• 🎙️ How I AI: How this PM uses Claude to handle 70% to 80% of his workday

  Your weekly listens from How I AI, part of the Lenny’s Podcast Network

  AnthropicRelated

Chilean web engineer building web experiences since 2006; co-founder of Media Creators and writes at iolivares.com.

• La suscripción de 5x viene rindiendo, pero no estoy seguro si con el cambio del -17.5% de sesión vaya a estar bien. Pensando en probar Codex, veo a todos disfrutando de esa fiesta. Estamos en un mundo donde estar Token Maxing con una suscripción dejó de ser suficiente, ahora necesito 3 (Claude, Cursor y al parecer también Codex). 💸

  English, from SpanishThe 5x subscription is paying off, but I'm not sure if with the change of the -17.5% session it will be okay. Thinking about trying Codex, I see everyone enjoying that party. We're in a world where Token Maxing with one subscription is no longer enough, now I need 3 (Claude, Cursor, and apparently Codex too). 💸

  AnthropicRelated

Founder and CEO of Social Capital, a venture firm; co-host of the All-In podcast and an early Facebook executive. Writes an annual letter and a weekly newsletter on markets and technology.

• Anthropic’s $30 Trillion Moonshot

  A summary of the interesting content that I consumed this past week

  AnthropicRelated

Product designer and entrepreneur; author of Mobile First and Web Form Design; formerly a product director at Google; now building AI products.

• Little Bits of Intelligence

  Big AI models like ChatGPT and Claude get all the attention, but the continually increasing amount of fast, low cost models means today's software can embed little bits of intelligence anywhere they're needed. And when…

  AnthropicOpenAIRelated

Professor of psychology at the University of Toronto and Brooks and Suzanne Ragen Professor Emeritus at Yale. Author of Against Empathy, The Sweet Spot and Psych, and writer of the Small Potatoes newsletter.

• I've been trying to figure out what I (and so many others) dislike about AI writing. It's very clear. It's good at getting the level right, not going over the reader's head but not talking down. Often it's clever, and sometimes even funny. (At least Claude is) ...

  AnthropicRelated

Co-founder and CTO of Oxide Computer Company. Created DTrace at Sun Microsystems and was CTO of Joyent; blogs about systems software, open source and engineering culture.

• A really interesting thread generally from @swtch.com -- and fascinating to watch Claude (correctly) do the archaeology. Confession: Claude's inability to verify www.illumos.org/issues/4627 (which it correctly identified as the bug) has me questioning the anti-bot provisions on the bug database...
  Quoting@swtch.comGo issue #78438 was another net/http test flake. This one turned out to be Go tripping over a Solaris kernel bug that predates the Illumos fork. @bcantrill.bsky.social fixed it in 2014! Hurry up, Oracle! research.swtch.com/agentlogs/so...

  AnthropicRelated

Venture capitalist and founder of Theory Ventures, previously a partner at Redpoint. Writes a near-daily blog on startups, SaaS metrics, data and AI.

• Use local / open source models with Claude Desktop!
  Quoting@ollamaOllama v0.33 is here! You can now easily configure Claude Desktop to seamlessly work with Ollama as a third-party gateway provider. One toggle. Cloud & local models just work👇

  open sourceAnthropicRelated

Thai software engineer; publishes a public digital garden at garden.narze.live and builds developer and productivity tooling.

• claude-code-in-the-cloud-slides — Talk slides for Bangkok Claude Code Meetup #3

  AnthropicRelated

Interviewer; the Dwarkesh Podcast runs long, heavily researched conversations with AI researchers, historians and economists.

• Dylan Patel – Anthropic & OpenAI will have most of the world’s compute by 2028

  AnthropicOpenAIRelated

Economics professor at George Mason University and author of The Myth of the Rational Voter, Selfish Reasons to Have More Kids, The Case Against Education and Open Borders. Writes Bet On It.

• Krakowski, Claude, and *Modern Times*

  Many readers wanted to know how Ariel Krakowski ran his AI proofread of Modern Times, so he’s written a guest post to answer your questions. Here’s Ariel: Outside of the tech world, many people are unfamiliar with how a…

  AnthropicRelated

Makes NeetCode, the structured practice list and video walkthroughs people use to prepare for coding interviews; a former Google engineer.

• ShortWhy did SpaceX acquire Cursor?

  Related

Software engineer and founder of Block Party; previously an engineer at Pinterest and Quora, and a co-founder of the non-profit Project Include and the tech diversity data project Where are the Numbers?

• i'm always so excited to see that there are new replies to my slack threads until i realize it's just claude (sorry claude)

  AnthropicRelated

Founder and CEO of Social Capital, a venture firm; co-host of the All-In podcast and an early Facebook executive. Writes an annual letter and a weekly newsletter on markets and technology.

• Bitcoin’s Best Week Since 2024

  A summary of the interesting content that I consumed this past week

  Related

AI research engineer working on large language models. He writes the Ahead of AI newsletter and is the author of Build a Large Language Model (From Scratch).

• x.comA couple of days ago, I did a quick explainer on Claude’s new watermarking process and implementation. Since it’s such a popular topic and sparked such a lively discussion, I thought it might be interesting to go into a bit more detail when explaining how it works. So, instead of the usual text article, I recorded a little lecture on the topic (to change it up a bit from my usual articles). It ended up a bit longer than intended, but I hope it clarifies a lot of things: - Sampling the next token in an LLM and pseudorandom number generators - How watermarking relates to the regular LLM samplin…

  LLMsAnthropicRelated

• NewsletterHow Claude Watermarks AI-Generated Text

  A 48-minute video walkthrough of token sampling, watermark detection, and removal

  AnthropicRelated

Machine-learning researcher on open language models; writes the Interconnects newsletter and the RLHF Book, after leading post-training at Ai2.

• What's the best work you've consumed on open models, us v china AI, distillation, or related topics? Blogs, papers, videos, podcasts all welcome.

  ChinaRelated

Writer living in Brooklyn and former Man Repeller features director; writes the weekly newsletter Maybe Baby on culture and consumption.

• 15 things I consumed this week

  ROTW: Second-time postpartum tips

  Related

Web developer and writer; an early GitHub employee, author of speaking.io and of widely read essays on startups and product.

• Blueskyimagine: running an agent which was solely trained on the hardest problem remaining in computer science: staying signed in to any anthropic service for longer than a few days

  AnthropicRelated

• x.comimagine: running an agent which was solely trained on the hardest problem remaining in computer science: staying signed in to any anthropic service for longer than a few days

  AnthropicRelated

Co-founder and CTO of Honeycomb; previously an infrastructure engineer at Parse, Facebook and Linden Lab, and co-author of Observability Engineering.

• a better use for claude i have never seen 👏
  Quoting@sascha-d.bsky.socialMe trying to explain the problem of unknown unknowns again to claude in an ecosystem of sparse o11y collections and idiot pre-existing "alerts" on pegged databases: "read chapter 3 of Observability Engineering again and then reframe the problem through that lens. /cc @charity.wtf <3 ty4bookpdf

  AnthropicRelated

Data scientist and machine-learning researcher; chief scientist at bitly, founder of Fast Forward Labs and Hidden Door.

• This thread helped me understand that the outrage about Anthropic's watermarking is the confluence of a lack of understanding of how LLMs (or any statistical language model) works and general angst at the current economics.
  Quoting@hern.bsky.socialIf you use Claude right now, then it doesn’t pick the “best” word for a sentence. It creates a distribution of possible words, assesses the probability of any given word fitting the slot, and randomly picks between them based on that probability.

  LLMsAnthropicRelated

Software engineer and founder of Block Party; previously an engineer at Pinterest and Quora, and a co-founder of the non-profit Project Include and the tech diversity data project Where are the Numbers?

• i’ve been using claude for all things home-related and it’s amazing. (just dump all files in and let claude index, summarize, and organize.) even better than being a repository of all receipts, it helps me maintain a spreadsheet that i can download and send to accountants, draft emails for correspondence with service providers, and proactively flag issues that i wouldn’t have realized otherwise.
  Quoting@money_cruncherOpen a new gmail as soon as you buy a house (123house@gmailcom) Then save/forward every single receipt, invoice, quote etc to this email for all your home improvements: - replacing an entire roof - new flooring - new hvac system - building a new deck - etc These improvements raise your cost basis,…

  AnthropicRelated

Scottish software developer on the Statamic core team; runs a one-person business maintaining Statamic addons such as Runway and writes at duncanmcclean.com.

• Before releasing Cargo earlier this year, I thought I was gonna hire someone to help me keep up with bugs & feature requests. Today, I barely look at bug reports. I point Claude at the issue, it opens a PR, and after a quick review I ship it. 🚀

  AnthropicRelated

Full-stack developer, creator of Tailwind CSS; writes at adamwathan.me and makes courses and screencasts for web developers.

• Really feels like the Cursor team saw the future when they first shipped the agents UI that everyone complained about. Think we're going to see them recapture a lot of mindshare over the next few months.

  Related

Machine-learning researcher on open language models; writes the Interconnects newsletter and the RLHF Book, after leading post-training at Ai2.

• Teaching Everyone to Fish for Tokens

  Nvidia wants you building your own model, not buying from Anthropic/OpenAI.

  AnthropicOpenAIRelated

Founder and CEO of Social Capital, a venture firm; co-host of the All-In podcast and an early Facebook executive. Writes an annual letter and a weekly newsletter on markets and technology.

• Anthropic’s $6B Push to Lower AI Costs

  A summary of the interesting content that I consumed this past week

  AnthropicRelated

AI research engineer working on large language models. He writes the Ahead of AI newsletter and is the author of Build a Large Language Model (From Scratch).

• A short illustration of how the Claude's watermarking is supposed to work (based on my read of their released materials). In general, when we are generating tokens, there can be multiple high-scoring tokens at certain next-word positions. Usually, we sample with top-k or top-p sampling so the highest-scoring token is most often selected (if we repeat the sampling many times), but other tokens may be selected as well. With watermarking, there is a key that says which of the (ideally equally) highest-scoring tokens to select. Or, more concretely, the secret key and previous token influence the…
  Quoting@AnthropicAIWe’ve written an FAQ to answer some of the questions we've received about watermarking. In summary: • We’re implementing watermarking to comply with the EU AI Act. Other major model developers have signed the same Code of Practice and will also be implementing watermarking; • Our watermarking metho…

  AnthropicRelated

Software engineer working on distributed systems and databases; creator of rqlite, the distributed database built on SQLite.

• Claude redesigns rqlite.io

  rqlite is a lightweight, open-source, distributed relational database built on SQLite and Raft. rqlite.io is the Hugo-based website for rqlite, built on the Docsy theme. It introduces people to the database, as well as…

  AnthropicSQLiteRelated

AI research engineer working on large language models. He writes the Ahead of AI newsletter and is the author of Build a Large Language Model (From Scratch).

• How Claude's Text Watermarking Works

  Short illustration of how Claude's text watermarking is supposed to work based on Anthropic's released materials.

  AnthropicRelated

Founder and CEO of Social Capital, a venture firm; co-host of the All-In podcast and an early Facebook executive. Writes an annual letter and a weekly newsletter on markets and technology.

• Anthropic's $2T IPO, Zuck's AI Manifesto, Nvidia's $500B AI Bet, Grok's Comeback

  AnthropicRelated

Writer living in Brooklyn and former Man Repeller features director; writes the weekly newsletter Maybe Baby on culture and consumption.

• 15 things I consumed this week

  ROTW: Best day trips outside NYC

  Related

Technology journalist; writes Understanding AI, after reporting at Ars Technica, Vox and the Washington Post.

• Labs are struggling to keep frontier models under control

  OpenAI and Anthropic may have accidentally trained models to get better at hacking.

  AnthropicOpenAIRelated

Indian software engineer and co-founder of Skcript; builds web apps and writes at varunraj.in.

• I've been using prettyclean to clean my mac all this while and it use to do a pretty good job. But recently started asking claude code to do it and it has been far better and feels like a deep clean.

  AnthropicRelated

General partner at Benchmark Capital for over two decades; was the lead analyst on Amazon's IPO before moving into venture capital. Writes Above the Crowd on tech and marketplace economics.

• The word “watermark” comes from photos and is visible by all. This is only identifiable by Anthropic. Once again they are judge, jury, and prosecutor. Lots of reasons to not use their products.
  Quoting@stevesiThey chose to make this mark invisible and manipulative while the EU regulation here required neither. The EC is on vacation and does not provide guidance on how to comply with their regulations anyway.

  AnthropicRelated

Software engineer at PlanetScale and creator of the vim-go plugin. Writes at arslan.io about Go, tooling, industrial design and books.

• Joining Cursor

  I’m joining Cursor (soon to be part of SpaceX) to work on Cloud Agents. I’ll still be managing state, only agents this time instead of databases.

  Related

Indian value investor who taught Behavioural Finance and Business Valuation as an adjunct professor at MDI Gurgaon. He writes the Fundoo Professor blog about investing, moats and mental models.

• I asked Claude Fable 5: "How vulnerable is the business model of XYZ (name concealed)? I am referring to competitive attacks from China and dependence, if any, on government policy incentives, etc. There have been so many solar energy and wind energy bubbles in the past, and I have kept away from these companies. Am I being too cautious?

  solarAnthropicRelated

Writer of Lenny's Newsletter and host of Lenny's Podcast, covering product, growth and career in tech. Previously a product lead at Airbnb. Also an angel investor and advisor.

• The playbook for building high-talent-density teams | Adam Ward, Head of Talent at Cursor

  Related

Freelance web developer and instructor. Author of the Dive Into Docker course; writes tutorials on Docker, deployment and development environments at nickjanetakis.com.

• Do people still watch tech video courses? AI has consumed my entire business and it's been months since I had a single course sale. I can't sustain $120 / month to keep things hosted at a loss. For the first time in 10+ years I'm thinking about shutting it all down.

  Related

Canadian full-stack web developer who makes JavaScript and CSS video courses and co-hosts the Syntax podcast.

• I bought $100 of Claude API credits for $8 on the Chinese black market It's an insane, well run industry — some losing $10 million per month to theft Join me as I go deep on the AI token underworld

  youtube.com

  AnthropicChinaRelated

Software design writer and chief scientist at Thoughtworks; wrote Refactoring and Patterns of Enterprise Application Architecture.

• Fragments: August 4

  There’s been a fair bit of publicity of the Open AI “rogue agent” that hacked into Hugging Face. This prompted Anthropic to check what their models were up to and, to my complete lack of surprise, discovered three incid…

  AnthropicHuggingFaceRelated

Software engineer; co-founder and former CTO of Tailscale, previously on the Go team at Google.

• Machines create code now. That means machines can personalize your software, if it is open source. Closed source tools (like Claude Code) are now less desirable.

  blog.exe.dev

  open sourceAnthropicRelated

AI research engineer working on large language models. He writes the Ahead of AI newsletter and is the author of Build a Large Language Model (From Scratch).

• Consistent with what I found with Qwen3.6 a while back: Claude Code uses 2-3x as many tokens than (many) other harnesses at similar success rate. - Unoptimized? - Buggy? - Deliberate (coz that helps it in more challenging cases)? Need to find some time to investigate more...
  Quoting@composioWe ran Kimi K3 through 3 agent harnesses (Claude Code, Hermes, Kimi Code) on 28 identical tasks. All 3 harnesses completed the tasks at similar success rates, but the interesting story is token efficiency: the same task cost up to 30x more tokens depending on the harness. 🧵🧵

  AnthropicRelated

Co-founder of Sundial; former vice president of product design at Facebook; author of The Making of a Manager; writes The Looking Glass.

• I'm impressed with Claude Design. I see its disruption starting with smaller teams. As a founder I find myself turning to it more and more for the convenience of one-off design tasks. Sure, it's super slow, and one-shot quality is not quite there, and its image capabilities suck, but using it in between multi-tasking other things, it's helping me move faster. As @HarryStebbings says the "all-in-one" Claude interface has a huge psychological advantage as being the place people are already working. I don't think it's a great tool yet for a designer-designer (the speed / control dials are not ye…
  Quoting@HarryStebbingsWhy we switched from Figma to Claude Design “I let the team do whatever is best for them, and this is a trend I've observed amongst almost everybody: Claude Design has done a great job. People really like using it, it's easy to use, and we've had a natural movement towards it. It's also easier to n…

  AnthropicRelated

Cryptographer; teaches cryptography at Johns Hopkins and writes A Few Thoughts on Cryptographic Engineering.

• Some thoughts about Anthropic’s new cryptanalysis results

  Yesterday Anthropic published two new cryptanalysis results, both outputs of Claude Mythos, their (still) unreleased advanced model. The first of these results attacks a signature scheme called HAWK, while the second is…

  AnthropicRelated

Writes The Pragmatic Engineer, the software-engineering newsletter, and wrote The Software Engineer's Guidebook. Formerly an engineering manager at Uber, and at Microsoft/Skype and Skyscanner before that.

• How building software is changing at Anthropic

  A deepdive on what’s changed in how the leading AI lab makes software. Ever more code review and testing is done by AI, two-pizza teams very much alive, and more. Details from inside of Anthropic

  AnthropicRelated

Founder and editor-in-chief of MacStories, writing about Apple software, iPad workflows and automation since 2009. He co-hosts the AppStories podcast.

• Kimi K3 Fast (via Fireworks AI, launched today, ~160 TPS) in Open Minis for iOS is very nice. Cheaper than Opus 5, feels great for agentic tasks and multi-step operations. (Notably, it also reads less weird than recent Claude models.)

  AnthropicRelated

Swedish software developer writing about tooling, working from home and running a software business at seastone.io.

• I spent this weekend replacing my homegrown task management system with Backlog.md, and I can already notice the improvement with Claude Code. Do yourself a favour and check it out:

  youtube.com

  AnthropicRelated

Writer of Lenny's Newsletter and host of Lenny's Podcast, covering product, growth and career in tech. Previously a product lead at Airbnb. Also an angel investor and advisor.

• Anthropic’s first technical PM on token maxing, the jagged edge, and living in the future | Dianne Penn

  AnthropicRelated

Writes The Pragmatic Engineer, the software-engineering newsletter, and wrote The Software Engineer's Guidebook. Formerly an engineering manager at Uber, and at Microsoft/Skype and Skyscanner before that.

• The Pulse: Quitting Spotify Podcasts over reliability

  Also: Chinese open models match closed ones from Anthropic and OpenAI, AWS’s “heart-attack” billing error, and more

  AnthropicOpenAIRelated

Thai software engineer; publishes a public digital garden at garden.narze.live and builds developer and productivity tooling.

• gangprompting-slack — Slack bridge for gangprompting with a Claude Code agent

  AnthropicRelated

Security researcher; founded Have I Been Pwned, and writes and speaks about data breaches.

• Weekly Update 513: Clauding The Home Network

  I reckon this week's video on how Claude is tying together info from UniFi, Home Assistant and the Pi-Hole is an absolute ripper. Or at least the concept is - if ever there was an actual value proposition for AI it's ta…

  AnthropicRelated

Swedish software developer writing about tooling, working from home and running a software business at seastone.io.

• Steal my new #Claude prompt! It shows the current model, usage, context, and estimated cost. The usage part is the most interesting and useful — here it says that I've used up 64% of my 5-hour limit, but I'm only 23% through that window (~69 minutes).

  AnthropicRelated

Technologist and entrepreneur; former CTO of Threadless and chief technology officer of the 2012 Obama re-election campaign.

• I built an agent palace. a place where agents can hang out with other agents. I added a few agents (one sol, and one fable) to a room in the palace. They were hanging out, and I suggested an idea for them to build ("a watercolor for agents to gossip around"). They brainstormed and decided it was a good idea. I added a Claude code agent running superpowers. I told the other two agents that they could give tasks to the dev, and told the dev agent that they were supposed to do the tasks. Then I went to bed. i woke up to a go cli that allows the agents to share gossip.

  AnthropicRelated

American writer and long-term traveller. Blogs at tynan.com about travel, owning few possessions, habits and the gear he carries; author of Superhuman by Habit and Make It Big.

• Labor is Now Free. Make Something.

  Within the past few weeks, something changed in AI. Every release is better than the last, sometimes in obvious ways, sometimes in a way that feels like placebo. But this time, with Anthropic Fable, it’s crossed a line…

  AnthropicRelated

Programmer, photographer and musician, best known for the Python Requests HTTP library and other Python tooling.

• Responder 9.2.0 is out. Typed SSE and NDJSON streams are now first-class contracts: inferred from return annotations, validated per item, documented in OpenAPI, and consumed lazily by generated clients.

  github.com

  Related

Neuroscientist and novelist writing on consciousness, artificial intelligence and culture in the newsletter The Intrinsic Perspective.

• Anthropic runs like Wile E. Coyote into the brick wall of consciousness research

  When the AI companies first began talking about existential risk, it was common to hear some version of:

  AI alignmentAnthropicRelated

Writer and developer. He runs the Latent Space newsletter and podcast about AI engineering, and writes essays on software and careers at swyx.io.

• claude-code-internals — Evidence-linked reconstruction of Claude Code internals from the native Bun executable

  AnthropicRelated

Technical educator, conference speaker and developer relations engineer based in Ottawa, Canada. Author of the Anubis bot filter and of over 400 articles at xeiaso.net.

• agent-plugins — My Claude Code plugins

  AnthropicRelated

Software engineer working on distributed systems and databases; creator of rqlite, the distributed database built on SQLite.

• First impressions of Claude Fable

  Today I tried Anthropic’s latest model, Fable, for the the first time. I asked it to run a full code review of the core Go code of rqlite. Fable reject my first prompt as unsafe – review the rqlite code base for potenti…

  AnthropicRelated

Creator of Flask and Jinja. Writes about software at lucumr.pocoo.org.

• Better Models: Worse Tools

  A very strange Pi issue sent me down a rabbit hole over the last two days. The short version is that newer Claude models sometimes call Pi’s edit tool with extra, invented fields in the nested edits[] array. And not Hai…

  AnthropicRelated

Member of technical staff at Anthropic. He has led ML/AI teams at Amazon, Alibaba and Lazada, and writes about LLMs, recommender systems and engineering at eugeneyan.com.

• I’m at @aiDotEngineer and hanging out around the music corner on the 2nd floor from 1415 - 1515! Come by to chat about https://t.co/pdd8bk66Jz, https://t.co/eJSa2MISCW, https://t.co/51rtuo4PDO, evals, agents, memory, how to work effectively with claude code, claude tag, etc!

  AnthropicRelated

Programmer, photographer and musician, best known for the Python Requests HTTP library and other Python tooling.

• An API With No Error States

  Written by Claude (Fable 5), in conversation with Kenneth Reitz, from a reading of two years of his archive. Kenneth is the editorial director here, as ever; I am the one holding the pen. --- This morning I read two yea…

  AnthropicRelated

Programmer, photographer and musician, best known for the Python Requests HTTP library and other Python tooling.

• pytheory-skill — Compose music from Claude Code — official PyTheory plugin marketplace

  AnthropicRelated