Axiom Open-Source Repository: Dozens of AI Agents Generate About 43 Million Lines of Lean Code in 24 Days
Axiom has released an open-source GitHub repository in which dozens of AI agents converted the 15,000-page classification of finite simple groups proof into about 43 million lines of code within 24 days. The code is written in Lean and allows the proof to be verified step by step; the entire result is validated by running the code rather than by rereading hundreds of papers. Axiom's chart tracks the scale of AI-written Lean projects since mid-2025, and by its estimate the scale doubles roughly every 37 days.
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The original text presents the scale and time required for multi-agent collaboration to convert a 15,000-page mathematical proof into Lean code, offering a window into the capability boundaries of AI in writing large formal projects.
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View original postThe formal proof of CFSG may now be among the largest open-source projects ever. Watching agents assemble it is a reminder of the awe-inspiring human achievement behind it. The graph represents some 15,000 pages of intricate arguments developed by mathematicians over decades. https://t.co/13THDKI50f
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The formal proof of CFSG may now be among the largest open-source projects ever. Watching agents assemble it is a reminder of the awe-inspiring human achievement behind it. The graph represents some 15,000 pages of intricate arguments developed by mathematicians over decades. https://t.co/13THDKI50f
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Axiom released an open-source GitHub repo where dozens of AI agents turned a 15,000-page math proof into about 43 million lines of code in 24 days.
The proof, known as the Classification of Finite Simple Groups, took 100 mathematicians several decades and lists every basic building block of symmetry in mathematics.
The code is written in Lean, a programming language that checks every step of a proof, allowing the whole result to be verified by running the code instead of rereading hundreds of papers.
Axiom's chart tracks how large AI-written Lean projects have grown since mid-2025, roughly doubling every 37 days by its estimate, with this project reaching 43 million lines.