Fine-tuning a 350M Model for Better Structured Outputs in 100 GRPO Steps

Hugging Face published a tutorial on the blog showing how to use the TRL library to fine-tune LiquidAI/LFM2.5-350M with GRPO to improve structured output compliance, requiring only about 500 samples and 100 training steps, runnable on free-tier Colab or Kaggle GPUs.