Design Conditions for Intra-Group Learning of Sequence-Level Rewards: Token Gradient Cancellation

Create a fine-tuning library that explicitly handles 'token gradient cancellation' to prevent entropy collapse during RL-based reasoning model training. This is a critical utility for teams training large reasoning models on long-horizon tasks.

Suggested repo: reason-tune

"Stop your RL training from collapsing at the finish line."

Estimated effort: 40h