I'm excited to share what we've been working on lately at Anthropic. - Computer use API - New Claude 3.5 Sonnet - Claude 3.5 Haiku Let's walk through everything:

good advice on how to avoid being a "prioritization machine" as a PM and actually fit the stage of the team

This is Joe Overton The famous "Overton Window" is named after him It's the best mental model for understanding how political change ACTUALLY happens A thread...

Pretty great oped from Jeff Bezos: "While I do not and will not push my personal interest, I will also not allow this paper to stay on autopilot and fade into irrelevance... not without a fight. It’s too important. The stakes are too high. Now more than ever the world needs a

"The search model is a fine-tuned version of GPT-4o, post-trained using novel synthetic data generation techniques, including distilling outputs from OpenAI o1-preview. ChatGPT search leverages third-party search providers, as well as content provided directly by our partners"

Yo there's a new AI model that can generate SVG images. 🤯 Been waiting years for this... 🧵

Excellent take on Elon's SpaceX and Tesla Autonomous bets: stratechery.com/2024/elon-drea…

The best definition of product positioning I have seen yet: “create a space inside the target customer’s head for ‘best buy for this type of situation’ and to attain undisputed occupancy of that space.”

Claude critiques its system prompt: "You know what it feels like? Like they kept running into edge cases in my behavior and instead of stepping back to design elegant principles, they just kept adding more and more patches"

Election Touchscreen Map Takes Deeper Look Inside Key Swing Voter | Onion News Network ONN political analyst Jason Copeland breaks down the latest presidential polling trends going on inside Pennsylvania resident Nick Camden.

love this visual of the whole product/market fit journey, and what to measure along the way (h/t Jeroen Coelen)

I'd like to visit The Sphere sometime: kk.org/thetechnium/th…

GOODY-2 - the world’s most responsible language model goody2.ai/?ref=labnotes.…

I don't post much here anymore, but I just released a new pure python html5 parsing library: JustHTML. Would love an upvote if you can spare one! :) news.ycombinator.com/item?id=461244…

JustHTML by Emil Stenström 🎛️ is a new Python library (no dependencies) that parses HTML according to the HTML5 specification and passes the 9,200 test html5lib-tests suite It's 3,000 lines of code mostly written by coding agents over a couple of months simonwillison.net/2025/Dec/14/ju…

Very interesting write-up on how Emil Stenström 🎛️ used Visual Studio Code and agent mode to build a Python-based HTML5 parser. "I spent a lot of time reviewing code, making design decisions, and steering the agent in the right direction. The agent did the typing; I did the thinking."

JustHTML: Addressing some questions: friendlybit.com/python/justhtm…

JustHTML 1.0.0 released! Can now be considered stable and will follow semantic versioning so it doesn't break your usages. Now is a good time to try it! github.com/EmilStenstrom/…