Simon Willison’s Newsletter
Simon WillisonAI, LLMs, web engineering, open source, data science, Datasette, SQLite, Python and more
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 175 | Founded | 4 years ago | Last Issue | 12 days ago |
| Active | |||||
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simonw.substack.comLatest Issues
I think Anthropic and OpenAI have found product-market fit
In this newsletter:
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I think Anthropic and OpenAI have found product-market fit
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Claude Opus 4.8: “a modest but tangible improvement”
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Notes on Pope Leo XIV’s encyclical on AI
Plus 5 links and 4 quotations and 1 note and 6 r...
Datasette Agent: an AI assistant for Datasette built on LLM
In this newsletter:
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Datasette Agent
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Gemini 3.5 Flash: more expensive, but Google plan to use it for everything
Plus 2 links and 1 quotation and 1 note and 3 beats
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The last six months in LLMs in five minutes
In this newsletter:
- The last six months in LLMs in five minutes
Plus 6 links and 9 quotations and 2 notes and 8 beats
Sponsor message: Accelerate your deployment cycles with Datadog LLM Observability, a unified platform tha...
Vibe coding and agentic engineering are getting closer than I’d like
In this newsletter:
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Vibe coding and agentic engineering are getting closer than I’d like
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Live blog: Code w/ Claude 2026
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Notes on the xAI/Anthropic data center deal
Plus 4 links and 3 quotations and 9 beats
Sponsor...
DeepSeek v4, and the end of the OpenAI/Microsoft AGI clause
In this newsletter:
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DeepSeek V4 - almost on the frontier, a fraction of the price
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Tracking the history of the now-deceased OpenAI Microsoft AGI clause
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LLM 0.32a0 is a major backwards-compatible refactor
Plus 9 links and 4...
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Authors
The writers behind this newsletter.
Creator of @datasetteproj, co-creator Django. Fellow at @JSKstanford. Collector of @nichemuseums. Usually hanging out with @natbat and @cleopaws. He/Him
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