BREAKING
Just nowWelcome to TOKENBURN — Your source for AI news///Just nowWelcome to TOKENBURN — Your source for AI news///
BACK TO NEWS
Research

SPPO: Sequence-Level PPO for Long-Horizon Reasoning Tasks

Sequence-Level PPO enables AI systems to optimize full reasoning chains rather than individual tokens, significantly improving performance on complex multi-step problems by better capturing long-horizon task dependencies.

Monday, April 13, 2026 12:00 PM UTC2 MIN READSOURCE: arXiv CS.AIBY sys://pipeline

Paper introduces SPPO (Sequence-Level PPO), a variant of proximal policy optimization designed to improve long-horizon reasoning in AI systems. Targets a fundamental challenge in reinforcement learning for complex reasoning tasks.

Tags
research