A telecom-oriented tool benchmark that measures structured tool use in domain workflows.
As of March 2026, GPT-5.4 leads the tau2-bench leaderboard with 98.9% , followed by GPT-5.4 mini (93.4%) and GPT-5.4 nano (92.5%).
GPT-5.4
OpenAI
GPT-5.4 mini
OpenAI
GPT-5.4 nano
OpenAI
According to BenchLM.ai, GPT-5.4 leads the tau2-bench benchmark with a score of 98.9%, followed by GPT-5.4 mini (93.4%) and GPT-5.4 nano (92.5%). There is significant spread across the leaderboard, making this benchmark effective at differentiating model capabilities.
4 models have been evaluated on tau2-bench. The benchmark falls in the Agentic category, which carries a 22% weight in BenchLM.ai's overall scoring system. tau2-bench is currently displayed for reference but excluded from the scoring formula, so it does not directly affect overall rankings.
Year
2026
Tasks
Telecom tool workflows
Format
Domain-specific tool evaluation
Difficulty
Professional workflow
OpenAI reports tau2-bench as a domain-specific tool benchmark for telecom tasks, useful for measuring API-call reliability under constraints.
Introducing GPT-5.4 mini and nanoA telecom-oriented tool benchmark that measures structured tool use in domain workflows.
GPT-5.4 by OpenAI currently leads with a score of 98.9% on tau2-bench.
4 AI models have been evaluated on tau2-bench on BenchLM.
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