Hugging Face TRL
by Hugging Face · open-source · Last verified 2026-04-24
TRL (Transformer Reinforcement Learning) is Hugging Face's library for training language models with RLHF, DPO, PPO, and GRPO. It provides SFTTrainer, RewardTrainer, and DPOTrainer classes that simplify the alignment training pipeline and integrate with the full Hugging Face ecosystem. TRL is the standard library for post-training alignment research.
https://huggingface.co/docs/trl ↗C
C—Below Average
Adoption: C+Quality: B+Freshness: ACitations: CEngagement: F
Specifications
- License
- Open Source
- Pricing
- open-source
- Capabilities
- Integrations
- Use Cases
- API Available
- No
- SDK Languages
- Tags
- fine-tuning, rlhf, dpo, ppo, alignment, hugging-face, post-training
- Added
- 2026-04-24
- Completeness
- 60%
Index Score
44Adoption
50
Quality
70
Freshness
80
Citations
40
Engagement
0