Simon Willison's Weblog
Simon Willison · 30 korrents · 24 pieces · simonwillison.net
Hello Python 3.15, goodbye 3.10, and now I can use 3.111 korrent · 12 Oct 2026 · no page here yet
A new feature for my blog, built using my voice1 korrent · 9 Oct 2026 · no page here yet
OpenAI “rogue” agent activities found on Wikimedia projects1 korrent · 7 Oct 2026 · no page here yet
Introducing Claude Haiku 5.51 korrent · 7 Oct 2026 · no page here yet
Introducing Mistral Large 4: Le chonk1 korrent · 6 Oct 2026 · no page here yet
Qwen3.8 27B addition in words1 korrent · 4 Oct 2026 · no page here yet
We're going to need default hard budget caps on pretty much everything2 korrents · 3 Oct 2026 · no page here yet
2026 in LLMs (so far)2 korrents · 27 Sept 2026 · no page here yet
Note on 24th September 20261 korrent · 24 Sept 2026 · no page here yet
Claude Opus 5.5, GPT-6 Sol, GPT-6 Luna, and a new price war1 korrent · 22 Sept 2026 · no page here yet
Note on 18th September 20261 korrent · 18 Sept 2026 · no page here yet
How To Write With An LLM1 korrent · 17 Sept 2026 · no page here yet
Be alert: targeted attacks on prominent Rustaceans2 korrents · 17 Sept 2026 · no page here yet
OpenAI agents attacked RubyGems back in May1 korrent · 12 Sept 2026 · no page here yet
Generating running routes with GPT-6 Astra and ChatGPT Work2 korrents · 12 Sept 2026 · no page here yet
On the Navier–Stokes Millennium Prize Problem1 korrent · 8 Sept 2026 · no page here yet
OpenAI's rogue agents were caught communicating via public wikis2 korrents · 4 Sept 2026 · no page here yet
Read it on simonwillison.net ↗
- Web applications are generally expected to treat GET requests as safe and not use them to change server-side data, though not all software follows that convention.
- When Reuters uses the phrase 'people familiar with the matter', it means it has anonymous insider sources its reporters and editors find credible.
Claude's new system prompt really doesn't want to reproduce song lyrics1 korrent · 2 Sept 2026 · no page here yet
Claude Fable 5.1 made me a really nice animated pelican1 korrent · 1 Sept 2026 · no page here yet
Vibe coding SwiftUI apps is a lot of fun1 korrent · 27 Mar 2026
2025: The year in LLMs2 korrents · 31 Dec 2025 · no page here yet
Read it on simonwillison.net ↗
- MCP may turn out to be a one-year wonder, because coding agents that can run arbitrary shell commands make Bash the best general-purpose tool interface.
- Running coding agents without approval prompts is a normalization-of-deviance risk: the fact that it has not caused a disaster yet is itself the problem.