GRPO/RL Training with TRL

Expert guidance for Group Relative Policy Optimization (GRPO) using the TRL library. Battle-tested patterns for fine-tuning language models with custom reward functions.

When to Use

• Teaching a model to follow specific output formats (JSON, structured reasoning)
• Improving accuracy on math, coding, or reasoning tasks
• Custom task-specific behavior without labeled datasets
• Distilling reasoning capabilities from larger models

Setup

pip install transformers>=4.47.0 trl>=0.14.0 datasets>=3.2.0 peft>=0.14.0 torch accelerate