Following recent discussions over AI contributions to the LLVM open-source compiler project, they have come to an agreement on allowing AI/tool-assisted contributions but that there must be a human involved that is first looking over the code before opening any pull request and similar. Strictly AI-driven contributions without any human vetting will not be permitted.

LLVM has committed its "human in the loop" policy for tool-assisted contributions given an increase in AI-driven garbage:

"Over the course of 2025, we observed an increase in the volume of LLM-assisted nuisance contributions to the project. Nuisance contributions have always been an issue for open-source projects, but until LLMs, we made do without a formal policy banning such contributions. However, LLMs are here, so we are adopting this policy, abbreviated as "human in the loop", which requires that every contribution has a human author attesting to the value of that contribution, and that it is high enough quality that it is worth the time it takes to review the contribution."