T1-Bench: leaderboard
Metric: Pass@3 (%): share of conversations solved in at least one of three trials, where a conversation passes when every ground-truth tool call and parameter is reproduced and every ground-truth tool output is matched; T1-Bench: 525 multi-turn customer-service conversations over 25 domain settings (11 single domains and 14 combinations of 2 to 11 domains, 76 tools), a Gemma4-26B-A4B-it user simulator, three trials per conversation at temperature 1.0; averages weighted by conversations per setting; higher is better. Source: arxiv.org. Saturation forecast: Around 2031. 12 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Gemma 4 31B (IT) | 61.33 |
| 2 | Gemma 4 26B A4B (IT) | 58.86 |
| 3 | Gemma 4 E2B (IT) | 56 |
| 4 | GPT-OSS-120B (High) | 55.05 |
| 5 | gemma-4-E4B-it | 54.67 |
| 6 | Claude Sonnet 4.5 | 52.57 |
| 7 | Claude Opus 4.6 | 50.67 |
| 8 | Claude Haiku 4.5 | 50.67 |
| 9 | GPT-5.4 (Low) | 36.95 |
| 10 | GPT-OSS-20B (High) | 36.57 |
Interactive version: theaggregate.ai/benchmark?slug=t1-bench · How It Works · Data refreshed daily, snapshot 2026-09-29.