LeanIDE - IDE for Lean4

1Washington University
2California Institute of Technology
Published as part of: LeanDojo-v2, NeurIPS Mathematical Reasoning and AI, 2025

About LeanIDE

LeanIDE is the first IDE for Lean. We hope people contribute and add more features to make it better for everyone.

LeanIDE Demo


Interactive demonstration of LeanIDE's integrated development environment for formal mathematics.

Features

LeanIDE includes all the features in LeanDojo-v2: repository tracing, lifelong dataset management, retrieval-augmented agents, Hugging Face fine-tuning, external inference APIs, and progress prediction.