# DataFlex-RL: An Evaluation Platform for RLVR Data Policies

> Source: <https://aiflash.com/news/119363/>
> Published: 2026-09-14 12:30:07+00:00

Data policies for reinforcement learning with verifiable rewards (RLVR) determine which rollouts are used, how strongly they are weighted, and which domains contribute to subsequent training batches. We introduce DataFlex-RL, an evaluation platform for comparing these choices under a common GRPO rec