RMGAP - Generative Verifier - Best-of-4: leaderboard
RMGAP (Zhou and Li, 2026) tests whether reward models follow a preference stated in the prompt: each of 1,097 instances pairs four responses in deliberately different styles with prompts that each ask for one of those styles (three paraphrases each), across chat, writing, reasoning and safety. The reward is the model's mean log-probability of answering YES to whether the response is good. Best-of-4 accuracy is the percentage of cases in which the requested response scores above all three alternatives, averaged over the four domains; higher is better.
Metric: Best-of-4 accuracy (%; chosen response scored above all three alternatives, mean of chat, writing, reasoning and safety; mean log-probability of the model answering YES to whether the response is good). Source: arxiv.org. Saturation forecast: Estimated already saturated. 2 models tracked.
Top models
| # | Model | Score | Overall rank |
|---|---|---|---|
| 1 | Qwen 3 8B | 44.32 | #1838 |
| 2 | Qwen 2.5 7B Instruct | 43.82 | #2583 |
No result here: #1 Claude Fable 5.2, #2 Gemini 4 Carbon, #5 Claude Opus 5.5.
Interactive version: theaggregate.ai/benchmark?slug=rmgap-generative-verifier-best-of-4 · How It Works · Data refreshed daily, snapshot 2026-11-12.