fine-tuning-with-trl

Automates end-to-end LLM fine-tuning workflows with TRL and RLHF techniques.

1.0k|117|Updated Feb 26, 2026

Search Tags:#fine-tuning #ppo #dpo #trl #rlhf #grpo #instruction-tuning

Ready to run

npx skills add https://github.com/OpenLAIR/dr-claw --skill fine-tuning-with-trl-openlair

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: fine-tuning-with-trl
Source: https://github.com/OpenLAIR/dr-claw/tree/main/skills/post-training/trl-fine-tuning
Command: npx skills add https://github.com/OpenLAIR/dr-claw --skill fine-tuning-with-trl-openlair

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Fine-tune language models using reinforcement learning with TRL to align behavior with human preferences, enabling end-to-end optimization from instruction tuning to reward modeling.

Core Features & Use Cases

End-to-end RLHF pipelines: SFT to DPO or PPO/GRPO to produce user-aligned models.
Flexible workflows: Build reward models, perform preference-based learning, or full RLHF training with HuggingFace Transformers.
Use Case: A research team tunes a base model to follow complex instructions with preferred responses and safety constraints.

Quick Start

Install TRL and PyTorch, prepare your instruction and preference datasets, and run a TRL RLHF fine-tuning pipeline.

Frequently Asked Questions about fine-tuning-with-trl

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I fine-tune a language model using RLHF and TRL?▼

To fine-tune a language model with RLHF using TRL, you run an end-to-end pipeline covering supervised fine-tuning (SFT), reward model training, and preference optimization like DPO or PPO/GRPO to align behavior with human preferences.

What is the difference between DPO and PPO when aligning LLMs?▼

DPO, or Direct Preference Optimization, is an offline preference-based learning method, while PPO is an online reinforcement learning approach. Both are supported by TRL to align LLMs with human preferences during the fine-tuning workflow.

Can I use TRL with HuggingFace Transformers for reward model training?▼

Yes, you can use TRL with HuggingFace Transformers for reward model training. It provides flexible workflows to build reward models and perform full RLHF training to produce user-aligned language models.

What data format is needed for TRL supervised fine-tuning?▼

For TRL supervised fine-tuning (SFT), you need data formatted for prompts and instructions. For preference optimization stages like DPO or PPO, you must prepare datasets formatted for preferences to enable behavior alignment.

Do I need PyTorch to run GRPO online RL for language models?▼

Yes, you need PyTorch to run GRPO online RL for language models. The TRL RLHF fine-tuning pipeline requires Python, PyTorch, the TRL library, and HuggingFace Transformers to execute end-to-end optimization.

When should I use GRPO over DPO for instruction tuning?▼

You should use GRPO over DPO when you need online reinforcement learning instead of offline preference-based learning. TRL supports both GRPO and DPO to align language models with human preferences during instruction tuning workflows.