fine-tuning-with-trl

Align language models with human preferences using TRL pipelines.

Updated Apr 3, 2026
One-click install
npx skills add https://github.com/handsomelong922/my-codex-skills --skill fine-tuning-with-trl-handsomelong922
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: fine-tuning-with-trl
Source: https://github.com/handsomelong922/my-codex-skills/tree/main/skills/trl-fine-tuning
Command: npx skills add https://github.com/handsomelong922/my-codex-skills --skill fine-tuning-with-trl-handsomelong922

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

TRL provides post-training methods for aligning language models with human preferences, enabling techniques like supervised fine-tuning, direct preference optimization, and policy optimization to produce instruction-following and aligned models.

Core Features & Use Cases

  • Supports SFT for instruction tuning, DPO for preference alignment, PPO/GRPO for reward-based optimization, and reward model training to evaluate and guide learning.
  • Real-world use cases include building chatbots that follow complex instructions, producing safer and more helpful outputs, and iteratively improving model behavior with human feedback.

Quick Start

Run a TRL-based RLHF fine-tuning workflow on your base model using SFT, DPO, PPO, or GRPO.

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 large language model with human feedback using TRL?▼

TRL supports SFT for instruction tuning, DPO for preference alignment, and PPO or GRPO for reward-based optimization to align language models with human preferences and produce safer, helpful outputs.

What is the difference between SFT, DPO, and PPO when aligning language models?▼

SFT handles supervised instruction tuning, DPO executes direct preference alignment without a reward model, and PPO or GRPO applies reward-based reinforcement learning to optimize the policy iteratively.

Do I need specific datasets to run RLHF and preference alignment workflows?▼

Yes, RLHF and preference alignment workflows require access to suitable instruction datasets for SFT and preference datasets containing human-ranked responses for DPO or PPO training.

Can I use PEFT and Accelerate with TRL for LLM post-training?▼

Yes, TRL integrates with Transformers, datasets, PEFT, and Accelerate to execute LLM post-training workflows, enabling memory-efficient fine-tuning and distributed training acceleration.

When should I use GRPO instead of PPO for reward-based optimization?▼

GRPO serves as a policy optimization method within TRL for reward-based RLHF, providing an alternative to PPO to iteratively improve model behavior and produce safer, more helpful outputs.

How do I train a reward model for RLHF pipelines?▼

You train a reward model within TRL using human preference datasets to evaluate and guide learning, which subsequently directs the PPO or GRPO policy optimization phase of the RLHF pipeline.