Quoting Jeremy Howard
Easy solution to slow down recursive AI self improvement: • The lab with the top-ranked model must agree THEY must not use it for working on frontier AI • But everyone else should have access
Simon Willison's Weblog
If Claude Fable stops helping you, you'll never know
If Claude Fable stops helping you, you'll never know (https://jonready.com/blog/posts/claude-fable5-is-allowed-to-sabotage-your-app-if-youre-a-competitor.html) Jonathon Ready highlights one of the
Initial impressions of Claude Fable 5
I didn't have early access to today's Claude Fable 5 () release, but I've spent the past ~5.5 hours putting it through its paces. My initial impressions are that this is something of a beast. It's
Setting a custom price for a model in AgentsView
TIL: Setting a custom price for a model in AgentsView (https://til.simonwillison.net/llms/agentsview-custom-model-price) I've been really enjoying AgentsView (https://agentsview.io/) by Wes
Quoting Andrej Karpathy
I feel a lot of things changing as working software increasingly comes out on a tap. The Jevon's paradox kicks in and I feel my own demand for software growing substantially. You can ask for anything
Siri AI at WWDC 2026
Given how badly burned anyone who took Apple's 2024 WWDC Apple Intelligence announcements (https://simonwillison.net/2024/Jun/10/apple-intelligence/) at face value was, I'm holding to a strict "I'll
datasette-agent-edit 0.1a0
Release: datasette-agent-edit 0.1a0 (https://github.com/datasette/datasette-agent-edit/releases/tag/0.1a0) I'm planning several plugins for Datasette Agent which can make edits to existing
micropython-wasm 0.1a2
Release: micropython-wasm 0.1a2 (https://github.com/simonw/micropython-wasm/releases/tag/0.1a2) I added a CLI to micropython-wasm (issue #7
Running Python code in a sandbox with MicroPython and WASM
I've been experimenting with different approaches to running code in a sandbox for several years now, but my latest attempt feels like it might finally have all of the characteristics I've been
OpenAI Help: Lockdown Mode
OpenAI Help: Lockdown Mode (https://help.openai.com/en/articles/20001061-lockdown-mode) OpenAI first teased this in February
Quoting Andreas Kling
We will no longer accept public pull requests. [...] A substantial patch used to imply substantial effort, and that effort was a reasonable proxy for good faith. That assumption no longer holds.
AI enthusiasts are in a race against time, AI skeptics are in a race against entropy
AI enthusiasts are in a race against time, AI skeptics are in a race against entropy (https://charitydotwtf.substack.com/p/ai-enthusiasts-are-in-a-race-against) Charity Majors neatly captures the
Quoting Emanuel Maiberg, 404 Media
After this story was published Google's spokesperson reached out and asked us to publish a slightly different version of that statement. The new statement no longer stated that "it's critical that we
Uber Caps Usage of AI Tools Like Claude Code to Manage Costs
Uber Caps Usage of AI Tools Like Claude Code to Manage Costs (https://www.bloomberg.com/news/articles/2026-06-02/uber-caps-usage-of-ai-tools-like-claude-code-to-cut-costs) I wrote the other day
Quoting Natalie Lung
The rideshare giant is limiting all employees to $1,500 in monthly token spending per AI coding tool, an Uber spokesperson said in response to a Bloomberg News inquiry. That means spending on one
Microsoft's new MAI models
Microsoft announced two new text LLMs (https://microsoft.ai/news/building-a-hillclimbing-machine-launching-seven-new-mai-models/) this morning - MAI-Thinking-1
California Brown Pelican
California Brown Pelican, in Fort Mason, CA, US I'm at the Microsoft Build (https://build.microsoft.com/) conference today, held at Fort Mason (https://en.wikipedia.org/wiki/Fort_Mason) in San
Pasted File Editor
Tool: Pasted File Editor (https://tools.simonwillison.net/pasted-file-editor) I really like how you can paste a large volume of text into claude.ai (https://claude.ail) (or the Claude
Hackers Simply Asked Meta AI to Give Them Access to High-Profile Instagram Accounts. It Worked
Hackers Simply Asked Meta AI to Give Them Access to High-Profile Instagram Accounts. It Worked
May 2026 newsletter
I just sent out the May edition of my sponsors-only monthly newsletter (https://github.com/sponsors/simonw/). If you are a sponsor (or if you start a sponsorship now) you can access it here