HELM Robo-Reward-Bench - Viola: leaderboard

The "Viola" subtask of HELM Robo-Reward-Bench. Stanford HELM's Robo-Reward-Bench: vision-language models act as reward models over robot manipulation episodes, predicting task progress or success from video.

Metric: Absolute Error. Source: crfm.stanford.edu. Saturation forecast: Around July 2027. 25 models tracked.

Top models

#ModelScoreOverall rank
1Gemini 3 Flash (Preview)0.1#84
2GPT-5.5 (xHigh)0.15#29 (GPT-5.5)
3GPT-5.5 (2026-04-23)0.15#24
4Gemini 2.5 Pro0.17#153
5Gemini 2.5 Flash0.25#242
6GPT-50.28#104
7Gemini 3 Pro (Preview)0.28#66
8GPT-5.20.32#113
9GPT-5 Mini (2025-08-07)0.32#174
10GPT-5.1 (2025-11-13)0.48#105
11Gemini 2.5 Flash Lite0.5#421
12GPT-5 Nano0.92#428
13Llama 4 Maverick Instruct2.13#460
14Llama 4 Scout Instruct2.55#542

No result here: #4 Claude Opus 5.5, #6 GPT-6 Astra, #7 GPT-6.1 Sol.

Interactive version: theaggregate.ai/benchmark?slug=helm-robo-reward-bench-viola · How It Works · Data refreshed daily, snapshot 2026-10-23.