Research
PMCoder Couples Phase Planning With Episodic Memory, Resolving 25 More SWE-bench Verified Cases (+5.0pp) Than a Matched Baseline
Repository-level agents typically strengthen planning or memory in isolation, leaving long repair episodes vulnerable to stale evidence, repeated failed edits, and verification inferred from the agent's own claims. PMCoder makes the coupling bidirectional — the current plan phase conditions memory retrieval, while memory-derived trajectory statistics drive stuck detection and replanning — and grounds verification in issue-reproduction verdicts rather than self-reported completion. It resolved 25 more SWE-bench Verified cases (+5.0pp) than a harness-matched baseline, with at least 14 additional cases (+2.8pp) on Verified-500 across Claude Haiku 4.5, DeepSeek-V4-Flash, and an OpenHands port.
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