Tau2 Airline
TAU2 airline domain benchmark for evaluating conversational agents in dual-control environments where both AI agents and users interact with tools in airline customer service scenarios. Tests agent coordination, communication, and ability to guide user actions in tasks like flight booking, modifications, cancellations, and refunds.
LongCat-Flash-Thinking-2601 from Meituan currently leads the Tau2 Airline leaderboard with a score of 0.765 across 20 evaluated AI models.
LongCat-Flash-Thinking-2601 leads with 76.5%, followed by LongCat-Flash-Thinking at 67.5% and 
GPT-5.1 at 67.0%.
Progress Over Time
Interactive timeline showing model performance evolution on Tau2 Airline
Tau2 Airline Leaderboard
| Context | Cost | License | ||||
|---|---|---|---|---|---|---|
| 1 | Meituan | 560B | — | — | ||
| 2 | Meituan | 560B | — | — | ||
| 3 | OpenAI | — | 400K | $1.25 / $10.00 | ||
| 3 | OpenAI | — | 400K | $1.25 / $10.00 | ||
| 3 | OpenAI | — | 400K | $1.25 / $10.00 | ||
| 6 | OpenAI | — | — | — | ||
| 7 |  Anthropic | — | 200K | $1.00 / $5.00 | ||
| 8 | OpenAI | — | — | — | ||
| 9 |  Alibaba Cloud / Qwen Team | 80B | — | — | ||
| 10 | Alibaba Cloud / Qwen Team | 235B | 262K | $0.30 / $3.00 | ||
| 10 | Meituan | 69B | 256K | $0.10 / $0.40 | ||
| 10 | Meituan | 560B | 128K | $0.30 / $1.20 | ||
| 13 |  Moonshot AI | 1.0T | — | — | ||
| 13 | Moonshot AI | 1.0T | — | — | ||
| 15 | 120B | — | — | |||
| 16 |  Inception | — | 128K | $0.25 / $0.75 | ||
| 17 | 32B | 262K | $0.06 / $0.24 | |||
| 18 | OpenAI | — | 128K | $2.50 / $10.00 | ||
| 18 | Alibaba Cloud / Qwen Team | 80B | — | — | ||
| 20 | Alibaba Cloud / Qwen Team | 235B | — | — |
FAQ
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