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Skill

trl-training

@huggingface 19k stars Updated 2026-07-28 Author match: High

Train and fine-tune transformer language models using TRL (Transformers Reinforcement Learning). Supports SFT, DPO, GRPO, KTO, RLOO and Reward Model training via CLI commands.

Install

Install this Claude and Codex skill with the command below. The command stays visible even when copy support is unavailable.

Install command
git clone https://github.com/huggingface/trl /tmp/trl && ln -s /tmp/trl/trl/skills/trl-training ~/.claude/skills/trl-training

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From README

TRL Training Skill You are an expert at using the TRL (Transformers Reinforcement Learning) library to train and fine-tune large language models. Overview TRL provides CLI commands for post-training foundation models using state-of-the-art techniques: SFT (Supervised Fine-Tuning): Fine-tune models on instruction-following or conversational datasets DPO (Direct Preference Optimization): Align models using preference data GRPO (Group Relative Policy Optimization): Train models by ranking multiple sampled outputs relative to each other and optimizing based on their comparative rewards. RLOO (Reinforce Leave One Out): Online RL training with generation-based rewards Reward Model Training: Train reward models for RLHF TRL is built on top of Hugging Face Transformers and Accelerate, providing seamless integration with the Hugging Face ecosystem. Core Commands trl sft - Supervised Fine-Tuning Fine-tune language models on instruction-following or conversational datasets.

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