Tau-Bench Retail
τ-Bench Retail - function calling ability benchmark in a retail domain. Measures tool use with developer-defined function schemas.
Category
General Agents
Score type
percent
Scale
100%
higher is better
Models tested
3
What is Tau-Bench Retail?
τ-bench Retail simulates a customer-service agent in a retail business. The model talks to a simulated user and must use the company's tools (orders, refunds, policy rules) to actually solve the customer's problem. Only when the database state ends up exactly right does the task count as solved.
What does it test?
Tau-Bench Retail measures how well a model acts as a general-purpose agent. In detail, it checks:
- calling tools with correct arguments
- following written policies while serving the simulated customer
- multi-turn conversation behaviour (asking, confirming, acting)
- correct final database results, not just polite replies
How to read the score
The score is accuracy: the percentage of tasks answered or solved correctly. 100% means every task was solved perfectly; higher is better.
Frequently asked questions
What is the Tau-Bench Retail benchmark?
τ-bench Retail simulates a customer-service agent in a retail business. The model talks to a simulated user and must use the company's tools (orders, refunds, policy rules) to actually solve the customer's problem. Only when the database state ends up exactly right does the task count as solved.
What does Tau-Bench Retail test?
Tau-Bench Retail mainly measures how well a model acts as a general-purpose agent. Concretely, it checks: calling tools with correct arguments; following written policies while serving the simulated customer; multi-turn conversation behaviour (asking, confirming, acting).
How is the Tau-Bench Retail score calculated?
The score is accuracy: the percentage of tasks answered or solved correctly. 100% means every task was solved perfectly; higher is better. The declared maximum score of this benchmark is 100.0.
Where do I get Tau-Bench Retail data and scores?
The official source is https://github.com/sierra-research/tau-bench. The official benchmark page/reference is linked on this page. Every score on Open LLM Radar is also available as open data: download the scores JSON (http://open-llm-radar-api:8000/api/v1/benchmarks/tau-bench-retail/scores) or pull it directly from the Open LLM Radar API with any HTTP client.
Benchmark data & downloads
Where to get, inspect and reuse the data behind this benchmark.
Official benchmark page / paper
The benchmark maintainer's website, paper or leaderboard
Benchmark dataset
The question/task data itself — download and evaluate locally
Benchmark metadata (JSON)
This page's benchmark record from the Open LLM Radar API
All model scores (JSON download)
Full score table as JSON; paginate with limit/offset params
Open LLM Radar API docs
Swagger UI to explore and reuse all radar API endpoints
Model scores 3 models tested
| # | Model | Score | Date | Source | Verified |
|---|---|---|---|---|---|
| 1 |
Qwen3-Next-80B-A3B-Thinking
Qwen
|
69.6%
|
10.09.2025 | Report | Verified |
| 2 |
GPT-OSS-120B
OpenAI
|
67.8%
|
08.08.2025 | Report | Verified |
| 3 |
GPT-OSS-20B
OpenAI
|
54.8%
|
05.08.2025 | Report | Verified |