Verified70% confidenceFactExact time

PPO is the core algorithm used by OpenAI in the RLHF training phase of large language models such as ChatGPT.

4

Sources

70%

Confidence

Long-term

Relevance

7/18/2026

First Seen

Sources

DecisionRL: An Open-Source Reinforcement Learning Library Built for Operational Decision-Making

Related Claims

VerifiedPPO（近端策略优化）是OpenAI在2017年提出的一种强化学习算法，成为RLHF的主流选择81% similar UnverifiedRLHF 最初由 OpenAI 用于语言模型的对齐训练，后被广泛应用于图像生成领域72% similar

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