In the past month, Cursor found 1M+ bugs in human-written PRs. Over half were real logic issues that were fixed before merging. Today, we're releasing the system that spotted these bugs. It's already become a required pre-merge check for many teams.

Bugbot optimizes for detecting the hardest logic bugs with a low false positive rate. It does this by using a mix of models, scaling up compute, and leveraging Cursor's codebase understanding.