Is GRPO a trap or just REINFORCE? A technical koan
willccbb · x · 2026-08-01
This tweet explores DeepSeek's GRPO algorithm in the form of a Zen koan. It discusses that while GRPO is often criticized as a 'trap' or merely the classic REINFORCE algorithm, it remains practically valuable in high-compute, low-data regimes by mean-normalizing advantages and directly sampling task advantages to avoid biased value functions.
Related event: AI Community Debates: Is GRPO a True Innovation or Just REINFORCE?(2 posts)→
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