

Archon
#18 in Reasoning-ModelleUnknown · siet March 13, 2026 (Blog-Announcement "Archon: An Agentic System for Formalizing Research-Level Mathematics") · 2× · tolest 05. Nov. 2026
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Momentum
Archon is an agentic system from the FrenzyMath group (PKU BICMR, AI4Math) that autonomously formalizes research-level mathematics in Lean 4. It uses plan and prover agents together with the LeanSearch retrieval tool. The software is open source under Apache-2.0. It is an orchestration harness rather than a standalone model with its own model specifications.
Momentum-Verloop
07.08.05.11.
Features
| License | Apache-2.0 |
| Platform | Claude Code-based harness; Lean 4 / Mathlib; Codex optional (since v0.3.0) |
| Release Date | March 13, 2026 (blog announcement, open-source release) |