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arXiv · 2310.18457

LLMSTEP: LLM proofstep suggestions in Lean

Sean Welleck·Rahul Saha
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Abstract

We present LLMSTEP, a tool for integrating a language model into the Lean proof assistant. LLMSTEP is a Lean 4 tactic that sends a user's proof state to a server hosting a language model. The language model generates suggestions, which are checked in Lean and displayed to a user in their development environment. We provide a baseline language model, along with code for fine-tuning and evaluation to support further development. We provide server implementations that run on CPU, a CUDA GPU, or a Google Colab notebook, as a step towards fast, effective language model suggestions for any user.

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Sean Welleck, Rahul Saha. 2023-10-27. LLMSTEP: LLM proofstep suggestions in Lean. https://arxiv.org/abs/2310.18457

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