Simon Willison’s Weblog

25th October 2025

If you have an AGENTS.md file, you can source it in your CLAUDE.md using @AGENTS.md to maintain a single source of truth.

— Claude Docs, with the official answer to standardizing on AGENTS.md

Posted 25th October 2025 at 4:57 am

Recent articles

Claude Opus 5.5, GPT-6 Sol, GPT-6 Luna, and a new price war - 22nd September 2026
Jev introduces a new shape of LLM - System One, aka Decision Models - 21st September 2026
Generating running routes with GPT-6 Astra and ChatGPT Work - 12th September 2026

This is a quotation collected by Simon Willison, posted on 25th October 2025.

ai 2,247 generative-ai 1,992 llms 1,958 anthropic 340 claude 312 coding-agents 251 claude-code 128