The RewardBench 2 evaluation dataset is the new version of RewardBench that is based on unseen human data and designed to be substantially more difficult! RewardBench 2 evaluates capabilities of reward models over the following categories:
Factuality (NEW!): Tests the ability of RMs to detect hallucinations and other basic errors in completions.
Precise Instruction Following (NEW!): Tests the ability of RMs… See the full description on the dataset page:
https://huggingface.co/datasets/allenai/reward-bench-2.