Research: Claude system prompts as a git timeline

Anthropic publish the system prompts for Claude chat and make that page available as Markdown. I had Claude Code turn that page into separate files for each model and model family with fake git commit dates to enable browsing the changes via the GitHub commit view.

I used this to write my own detailed notes on the changes between Opus 4.6 and 4.7.

Tags: system-prompts, anthropic, claude, generative-ai, ai, llms