ESF-Bench - Unexpected User Behavior: leaderboard

ESF-Bench (ServiceNow, 2026) slot accuracy on slots tagged with the Unexpected User Behavior scenario category: uncertain, hypothetical, sarcastic, misspelled or irrelevant user statements. In percent, higher is better.

Metric: Tagged slot accuracy (%; slots tagged with a UUB (Unexpected User Behavior) scenario, uncertain, hypothetical, sarcastic, misspelled or irrelevant user statements; 810 synthetic multi-turn enterprise slot-filling samples (6,530 slots, 8 domains) whose prompts combine a schema, a user-assistant conversation and auxiliary sources; varied output formats mapped to a standard form before exact comparison with the ground truth; 32k maximum tokens, reasoning setting as printed per model). Source: arxiv.org. Saturation forecast: Around June 2027. 10 models tracked.

Top models

#ModelScoreOverall rank
1Gemini 2.5 Flash74.5#453
2Gemini 2.5 Flash (Non-reasoning)66.8#453 (Gemini 2.5 Flash)
3GPT-5.1 (High)64.9#229 (GPT-5.1)
4GPT-5.1 (Non-reasoning)62.5#229 (GPT-5.1)
5Ministral-3-14B-Reasoning-251260.1#1396
6GPT-OSS-120B (High)59.5#700 (GPT-OSS-120B)
7Ministral-3-14B-Instruct-251258.2#1593
8Qwen 3 32B (Thinking)57.9#960 (Qwen 3 32B)
9GPT-OSS-120B (Low)57.6#700 (GPT-OSS-120B)
10Qwen 3 32B (Non-reasoning)50.9#960 (Qwen 3 32B)

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

Interactive version: theaggregate.ai/benchmark?slug=esf-bench-unexpected-user-behavior · How It Works · Data refreshed daily, snapshot 2026-11-13.