AgentRewardBench (Accessibility Tree) - WebArena: leaderboard

AgentRewardBench judge precision (%) on WebArena trajectories, with the authors' simplified judge reading the final accessibility tree: the share of trajectories it calls successful that experts also marked successful; higher is better (McGill NLP, 2025).

Metric: Precision (%). Source: huggingface.co. Saturation forecast: Estimated already saturated. 5 models tracked.

Top models

#ModelScoreOverall rank
1GPT-4o (2024-11-20)70.2#864
2Claude 3.7 Sonnet69.3#455
3Llama 3.3 70B Instruct68.2#1353
4Qwen 2.5 VL 72B Instruct63.6#845
5GPT-4o Mini (2024-07-18)63.5#1512

No result here: #1 Claude Fable 5.2, #2 Gemini 4 Carbon, #5 Claude Opus 5.5.

Interactive version: theaggregate.ai/benchmark?slug=agentrewardbench-accessibility-tree-webarena · How It Works · Data refreshed daily, snapshot 2026-11-12.