Simon Willison's Weblog: Entries

How do I get a page's headers?

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Porting the Moebius 0.2B image inpainting model to run in the browser with Claude Code

Simon Willison’s Weblog12w12 weeks agoHN Covered by37 min read

Hugging Face – Fun chat with your own Artificial Intelligence, Hugging Face – The AI community building the future., and more ›

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Hackaday, and more ›

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sqlite-utils 4.0rc1 adds migrations and nested transactions

Simon Willison’s Weblog12w12 weeks ago4 min read

Contents Menu Expand Light mode Dark mode Auto light/dark mode, sqlite3 — DB-API 2.0 interface for SQLite databases — Python 3.14.2 documentation

Covers 2 stories

Datasette Apps: Host custom HTML applications inside Datasette

Simon Willison’s Weblog13w13 weeks agoHN Covered by310 min read

Content Security Policy (CSP) - HTTP, an AI assistant for Datasette to help explore and analyze data in SQLite, and more ›

Covered by3 sites

All 3 sites ›

Covers 3 stories

GLM-5.2 is probably the most powerful text-only open weights LLM

Simon Willison’s Weblog13w13 weeks agoHN2 Covered by62 min read

newer thread·older thread

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vettedconsumer.com, notes.dsebastien.net, and more ›

HN2

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Maybe helpful for someone, zai-org/GLM-5.2 is here!, and more ›

Publishing WASM wheels to PyPI for use with Pyodide

Simon Willison’s Weblog14w14 weeks ago4 min read

Luau – fast, small, safe, gradually typed scripting language derived from Lua

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Claude Fable is relentlessly proactive

Simon Willison’s Weblog14w14 weeks agoHN Covered by227 min read

datasette.io, The Normalization of Deviance in AI, and more ›

Covered by22 sites

Manton Reece, Schneier on Security, and more ›

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Initial impressions of Claude Fable 5

Simon Willison’s Weblog14w14 weeks agoHN Covered by1210 min read

Claude Fable 5 and Claude Mythos 5, Introducing Claude Fable 5 and Claude Mythos 5, and more ›

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Simon Willison's Newsletter, Fast Company, and more ›

Covers 8 stories

Running Python code in a sandbox with MicroPython and WASM

Simon Willison’s Weblog15w15 weeks agoHN Covered by36 min read

MicroPython – Python for Microcontrollers, datasette.io, and more ›

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Simon Willison's Newsletter, and more ›

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Claude Opus 4.8: “a modest but tangible improvement”

Simon Willison’s Weblog16w16 weeks agoHN Covered by83 min read

Introducing Claude Opus 4.8, How I built a three-tier content quality ladder for programmatic directory ETL, and more ›

Covered by8 sites

Simon Willison's Newsletter, Ben's Bites, and more ›

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I think Anthropic and OpenAI have found product-market fit

Simon Willison’s Weblog16w16 weeks agoHN Covered by309 min read

SpaceX S-1, Microsoft starts canceling Claude Code licenses, and more ›

Covered by30 sites

Simon Willison's Newsletter, OODAloop, and more ›

Covers 13 stories

A few notes on Pope Leo XIV’s encyclical on AI

Simon Willison’s Weblog16w16 weeks agoHN Covered by127 min read

Encyclical Letter of His Holiness Leo XIV Magnifica Humanitas (15 May 2026), Rerum Novarum ("The thirst for innovation") (1891)

Covered by12 sites

Ars Technica, DEV Community, and more ›

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Datasette Agent

Simon Willison’s Weblog17w17 weeks agoHN3 min read

Discover and run local LLMs, ChatGPT Images 2.0, and more ›

Covers 6 stories

Gemini 3.5 Flash: more expensive, but Google plan to use it for everything

Simon Willison’s Weblog17w17 weeks agoHN Covered by113 min read

Gemini 3.5: frontier intelligence with action, Computer Use | Gemini API | Google AI for Developers, and more ›

Covered by11 sites

Blog Archive // @gurupanguji, DEV Community, and more ›

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The last six months in LLMs in five minutes

Simon Willison’s Weblog17w17 weeks agoHN Covered by128 min read

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Simon Willison's Newsletter, and more ›

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Drew Breunig

Notes on the xAI/Anthropic data center deal

Simon Willison’s Weblog19w19 weeks agoHN Covered by22 min read

Covered by2 sites

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Live blog: Code w/ Claude 2026

Simon Willison’s Weblog19w19 weeks agoHN

Vibe coding and agentic engineering are getting closer than I’d like

Simon Willison’s Weblog19w19 weeks agoHN Covered by126 min read

Covered by12 sites

Evan Schwartz, Scott Spence, and more ›

LLM 0.32a0 is a major backwards-compatible refactor

Simon Willison’s Weblog20w20 weeks agoHN6 min read

Tracking the history of the now-deceased OpenAI Microsoft AGI clause

Simon Willison’s Weblog20w20 weeks agoHN3 min read