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simonwillison.net

Simon Willison's Weblog

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Latest posts

Last updated about 8 hours ago

GPT-5.2

about 8 hours ago

OpenAI reportedly declared a "code red" on the 1st of December in...

Useful patterns for building HTML tools

1 day ago

I've started using the term HTML tools to refer to HTML applications...

The Normalization of Deviance in AI

1 day ago

The Normalization of Deviance in AI This thought-provoking essay from Johann Rehberger...

Dark mode

1 day ago

I've never been particularly invested dark v.s. light mode but I get...

10 Years of Let's Encrypt

2 days ago

10 Years of Let's Encrypt Internet Security Research Group co-founder and Executive...

Devstral 2

2 days ago

Devstral 2 Two new models from Mistral today: Devstral 2 and Devstral...

Under the hood of Canada Spends with Brendan Samek

2 days ago

I talked to Brendan Samek about Canada Spends, a project from Build...

Agentic AI Foundation

2 days ago

Agentic AI Foundation Announced today as a new foundation under the parent...

mistralai/mistral-vibe

2 days ago

mistralai/mistral-vibe Here's the Apache 2.0 licensed source code for Mistral's new "Vibe"...

Quoting Claude

3 days ago

I found the problem and it's really bad. Looking at your log...

Prediction: AI will make formal verification go mainstream

3 days ago

Prediction: AI will make formal verification go mainstream Martin Kleppmann makes the...

Deprecations via warnings don’t work for Python libraries

3 days ago

Deprecations via warnings don’t work for Python libraries Seth Larson reports that...