OpenAutoCoder/Agentless

Employs a three-phase pipeline—hierarchical fault localization across files/functions, multi-candidate diff-based patch generation, and test-driven validation with automatic re-ranking—eliminating the need for agentic loops. Achieves 40.7-50.8% solve rates on SWE-bench benchmarks while maintaining low inference costs (~$0.34 per issue) through direct LLM prompting without iterative agent scaffolding.

2,018 stars. No commits in the last 6 months.