Simon Willison’s Weblog

23rd January 2026

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TIL Cloudflare response header transform rules — I serve Python files from my `tools.simonwillison.net` subdomain, which is a GitHub Pages site that's served via Cloudflare. For example:

Posted 23rd January 2026 at 3:08 pm

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 beat by Simon Willison, posted on 23rd January 2026.

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