Tsinghua Releases VeriLoopCoder-E1: Open-Source Coding Agent with Evidence-Governed Self-Correction
机器之心 · wechat · 2026-08-02
A team from Tsinghua University Shenzhen International Graduate School released VeriLoopCoder-E1, an open-source code repair model. Built on Qwen3.6-27B, it achieved three first-place rankings among open-source models (≤32B) across four SWE benchmarks.
The model's core strength lies in the synergy between narrow-domain PEFT fine-tuning and the Self-Harness control stack. The team proposed the Evidence-Governed Spiral mechanism, upgrading mechanical retries into a closed loop of 'Evidence-Falsification-Exploration-Repair-Verification-Internalization'. This requires every generation and fix to be validated by evidence, allowing verified corrections to influence future error-discovery methods, pushing towards recursive self-improvement.
While the model weights are open-sourced under Apache 2.0, the Self-Harness control stack—responsible for multi-round task orchestration—is retained. The team will now focus on building general-purpose Code Agents capable of predicting and managing the consequences of their actions.
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