StatABench - Bayesian Method: leaderboard
StatABench (2026) tests LLM statistical analysis with tool use: Stat-Closed questions (multiple choice, fill in the blank, decision making and dataset-based practical application) are answered with a toolkit of statistical functions through LangChain MCP. This board is accuracy in percent on the 18 bayesian method questions; higher is better.
Metric: Accuracy (%) on the 18 bayesian method questions of Stat-Closed; Stat-Closed questions (multiple choice, fill in the blank, decision making, practical application with datasets) answered with the SAToolKit statistical functions through the LangChain MCP baseline tool-use setting, temperature 0; direct matching for closed answers and an LLM judge for open-form answers; higher is better. Source: arxiv.org. Saturation forecast: Around February 2027. 9 models tracked.
Top models
| # | Model | Score | Overall rank |
|---|---|---|---|
| 1 | Qwen 2.5 72B Instruct | 66.7 | #1092 |
| 2 | GPT-5.1 | 66.7 | #229 |
| 3 | Qwen 2.5 32B Instruct | 66.7 | #1215 |
| 4 | GPT-4o Mini | 55.6 | #1623 |
| 5 | Claude Sonnet 4.5 | 50 | #250 |
| 6 | Qwen 3 8B (Non-reasoning) | 50 | #1830 (Qwen 3 8B) |
| 7 | DeepSeek V3 | 44.4 | #716 |
| 8 | Llama 3.1 8B Instruct | 33.3 | #4246 |
| 9 | Qwen 2.5 7B Instruct | 27.8 | #2564 |
No result here: #1 Claude Fable 5.2, #2 Gemini 4 Carbon, #5 Claude Opus 5.5.
Interactive version: theaggregate.ai/benchmark?slug=statabench-bayesian-method · How It Works · Data refreshed daily, snapshot 2026-11-13.