Open Source Says No

A growing cohort of prominent open-source projects has moved to ban or restrict contributions generated by large language models, according to a policy tracker verified on November 11, 2026. The self-hosted photo manager immich (118,789 GitHub stars) now asks contributors not to open LLM-generated pull requests, while the search engine meilisearch (59,840 stars) will reject AI-produced code, tests, documentation, and issue or PR comments from tools including GitHub Copilot, ChatGPT, Claude Code, and Cursor. The JVM HTTP client okhttp (47,110 stars), the browser engine Servo (38,132 stars), and the single-file C/C++ library collection stb (34,900 stars) have adopted similar bans, with stb also rejecting bug reports that AI has reviewed or analyzed. Smaller projects including Redox OS, the Modern-CPP-Programming course, awesome-claude-skills, and the game framework MonoGame have followed suit, with awesome-claude-skills citing an influx of AI-assisted pull requests as the trigger. The clampdown matters because it signals pushback against AI-generated content in the workflows that underpin much of the software industry, even as AI coding tools proliferate. Watch for whether more maintainers adopt explicit AI policies, how GitHub responds at the platform level, and whether contributor volume or review quality shifts at the projects enforcing bans.