ResearchResearch paperReinforcement Learning · Training & Scaling · Reasoning & Planning1 source · Oct 9, 2026

SWE-Critix: Post-Training Generalist Verifiers for Assessing Coding-Agent Trajectories

We introduce SWE-Critix, a post-training pipeline for training generalist verifiers of coding-agent trajectories.

Key points

  • Coding agents are increasingly deployed for end-to-end software engineering tasks, where a readily available oracle evaluator that defines the success criteria is often absent.
  • This motivates verifications for coding agents that can reliably judge and explain their behavior.
  • However, verification is non-trivial as coding agents are increasingly capable of solving long-horizon software engineering tasks.
  • Our pipeline combines supervised fine-tuning (SFT) with reinforcement learning (RL) and trains a series of 30B models on trajectories from CodeForge-Preview.

Sources (1)

  • [1]SWE-Critix: Post-Training Generalist Verifiers for Assessing Coding-Agent Trajectories
    arXiv (AI, ML, NLP, CV, robotics, multi-agent) · Oct 9, 10:30 AM
    We introduce SWE-Critix, a post-training pipeline for training generalist verifiers of coding-agent trajectories.
    Coding agents are increasingly deployed for end-to-end software engineering tasks, where a readily available oracle evaluator that defines the success criteria is often absent.

Extractive summary: sentences quoted from the sources.

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