Tiny-RL: RL Methods from Scratch
Source: https://x.com (tweet) Author: unknown Date: 2025-2026
Summary
Announcement of Tiny-RL, a minimal repository implementing GRPO, DAPO, and Reinforce++ from scratch with a custom training loop. Designed to build intuition on how to improve LLM mathematical capabilities.
Key Claims
- Implements GRPO, DAPO, and Reinforce++ from scratch
- Custom training loop for transparency
- Focused on mathematical reasoning improvement
- Aimed at building intuition, not just reproducing results
Concepts
- RL Infrastructure — minimal reference implementation
- Reward Hacking — understanding reward signals from ground up