May2222/Fisher-R1-14B

TEXT GENERATIONPricing:Input $0.431 / Cached $0.0862 / Output $1.12Concurrent Unit Cost:1Model Size:14.8BQuant:FP8Context Size:32kTool Calling:SupportedPublished:Aug 16, 2026License:apache-2.0Architecture:Transformer0.0K Open Weights Featherless Exclusive Cold

Fisher-R1-14B is a 14.8 billion parameter open-weight LLM agent developed by May2222, post-trained from Qwen2.5-Coder-14B-Instruct. It specializes in reliable hypothesis testing by inspecting data, selecting and executing statistical tests, reporting p-values, and drawing conclusions. This model is uniquely designed for automated statistical analysis tasks, leveraging supervised fine-tuning and reinforcement learning with verified statistical rewards.

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Fisher-R1-14B: LLM Agent for Reliable Hypothesis Testing

Fisher-R1-14B is a 14.8 billion parameter open-weight language model agent developed by May2222, specifically engineered for reliable hypothesis testing. It is built upon the Qwen2.5-Coder-14B-Instruct architecture and has undergone a specialized post-training regimen.

Key Capabilities

  • Automated Statistical Analysis: The model is designed to function as an agent that can inspect datasets, identify appropriate statistical tests, and execute them.
  • P-value Reporting: It reliably reports p-values derived from its statistical test executions.
  • Conclusion Drawing: Based on the statistical analysis, Fisher-R1-14B can draw and present conclusions.
  • Advanced Training Methodology: Its training involved supervised fine-tuning on synthetic executable statistical tasks, followed by reinforcement learning guided by verified statistical rewards, ensuring high reliability.
  • Evaluated on P-Bench: Performance is assessed using the P-Bench benchmark, a dataset specifically designed for evaluating statistical reasoning in LLMs.

When to Use This Model

This model is particularly well-suited for applications requiring automated and reliable statistical inference. It excels in scenarios where an LLM needs to:

  • Perform data inspection and select appropriate statistical methods.
  • Execute statistical tests and interpret their results.
  • Generate p-values and provide clear, data-driven conclusions.

For detailed information on its training setup, evaluation protocols, and results, refer to the research paper: Fisher-R1: Training LLM Agents for Reliable Hypothesis Testing.