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PAIChecker: Uncovering and Checking PR-Issue Misalignment in SWE-Bench-Like Benchmarks

Research LLM Agents

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TL;DR - PAIChecker is a multi-agent system for detecting mismatches between pull requests and linked issues in SWE-bench-like benchmarks. Such errors affect 13.6% of analyzed SWE-bench Verified instances and can undermine evaluations of LLM software-engineering capabilities.

  • Identifies five misalignment patterns spanning eleven fine-grained scenarios.
  • Uses pattern identification, cross-agent label synthesis, and code-level validation.
  • Achieves up to 92.12% binary accuracy on SWE-Gym and 91.67% on SWE-bench Multilingual.
  • Outperforms alternatives across all four tested LLM backbones.

Sources (1)

PAIChecker: Uncovering and Checking PR-Issue Misalignment in SWE-Bench-Like Benchmarks

arXiv cs.SE Manyi Wang, Junjielong Xu, Pinjia He 2026-07-30 arXiv:2607.28587
Public signals Semantic Scholar citations 0 · Semantic Scholar influential citations 0
Providers: Hugging Face · N/A OpenAlex · N/A Publisher · N/A Semantic Scholar · Citations 0 · Influential citations 0 X · N/A Fetched 2026-08-15 14:24:21.957546 UTC

TL;DR - PAIChecker is a multi-agent system for detecting mismatches between pull requests and linked issues in SWE-bench-like benchmarks. Such errors affect 13.6% of analyzed SWE-bench Verified instances and can undermine evaluations of LLM software-engineering capabilities.

  • Identifies five misalignment patterns spanning eleven fine-grained scenarios.
  • Uses pattern identification, cross-agent label synthesis, and code-level validation.
  • Achieves up to 92.12% binary accuracy on SWE-Gym and 91.67% on SWE-bench Multilingual.
  • Outperforms alternatives across all four tested LLM backbones.
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