grpo-rl-training

Quick Review

Exceptional skill that provides comprehensive expert-level guidance for GRPO/RL training with TRL. The description clearly conveys the skill's purpose (GRPO fine-tuning guidance), and the content delivers extensively: clear when-to-use guidance, mathematical intuition, complete implementation workflows, battle-tested configurations, critical insights about loss behavior, troubleshooting guides, and production-ready code examples. The structure is well-organized with progressive disclosure from concepts to implementation to advanced patterns. The skill addresses a complex, token-intensive task that would be difficult for a CLI agent alone—requiring deep domain knowledge of RL training, reward shaping, hyperparameter tuning, and debugging subtle training dynamics. Minor improvement possible in creating a quick-start index at the top, but overall this is production-quality documentation that meaningfully reduces implementation cost and risk.