Fine-Tuning

SERA and the Case for Open-Source Coding Agents That Know Your Repo

If your team has tried Cursor, Copilot, or other AI coding tools and found them underwhelming on your codebase—wrong conventions, missing context, generic suggestions—you’re running into a fundamental limit: those models are trained and optimized for the average repo, not yours. In early 2026, AI2 (Allen Institute for AI) released SERA (Soft-Verified Efficient Repository Agents), an open-source family of coding agents built for something different: specialization to your repository through fine-tuning, at a cost that makes it realistic for more teams.