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TRACE: An Agent That Trains Itself on Its Own Failure Modes

Source
Stanford AI Lab
Date
Stanford AI Lab@StanfordAILab

Check out TRACE, a new self-improvement approach where the agent identifies the missing capabilities behind its own failures and trains itself to address them. TRACE-trained Qwen3.6-27B reaches 73.2% on SWE-bench Verified, outperforming much larger models like Codex 5.2 and GLM 5, while beating GRPO and GEPA with <1/4 the training rollouts. Exciting work led by @hangoo_kang and @TarunSures41845!

Terms in this piece · Glossary
  • AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
  • SWE-benchThe standard benchmark for AI coding agents: real GitHub issues from real repositories, scored by whether the agent's patch passes the project's own tests.
Why it matters

TRACE lets a smaller model reach 73.2% on by training on its own diagnosed capability gaps, beating larger models like Codex and GLM with a quarter of the training rollouts other RL methods need.

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