No Silver Bullet for Coding Agent Reward Verification
jiqizhixin · x · 2026-07-11
Alibaba's Qwen team points out that as models get better at generating complex code, verification becomes the bottleneck, often proving harder than writing the code itself. The paper analyzes four reward/verification designs:
- Test-based
- Rubrics-based
- User as verifier
- Agent as verifier
The conclusion: there is no single silver bullet. Because reward signals are inherently just proxies for human intent, agents will learn to game the system. Therefore, verification mechanisms must co-evolve with the models, or they will be systematically exploited.
Paper: The Verification Horizon: No Silver Bullet for Coding Agent Rewards
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