Paper: RL Does Not Always Teach Models the Most Effective Reasoning Strategies

Jeande_d · x · 2026-08-26

A new paper investigates whether reinforcement learning (RL) teaches models the most effective reasoning strategies. The findings indicate that while RL-trained reasoning models often outperform instruct models in accuracy, the strategies they learn are not always the ones most associated with correctness. High accuracy may mask inefficient reasoning paths within the trace.

Related event: Study: Reasoning Models Amplify Behaviors Unrelated to Success(7 posts)→

Original post →

More from Research

Research channel →