ByteDanceBFS-Prover

BFS-Prover V2 32B

BFS-Prover V2 32B generates Lean 4 proof tactics from a formal tactic state.

Model design

The model is based on Qwen2.5-32B. Its training uses expert iteration and best-first search. The input ends with a three-colon marker. The published system can add a planner and multi-agent tree search around the checkpoint.BFS-Prover V2 32B official model card

Practical use

Practical guidance. A tactic proposal is only a candidate until Lean accepts it. Report the model and search budget together when comparing proof success.

Specifications & access

BFS-Prover V2 32B specifications
DetailValue and conditions
AccessDownloadable
Model identifiersBFS-Prover-V2-32B
LicenseApache 2.0BFS-Prover V2 32B official model card
AccessWeights are published in the official ByteDance Seed repository.BFS-Prover V2 32B official model card

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    BFS-Prover V2 7B is the smaller Lean 4 tactic generator in the V2 release.

    Launch date not confirmedDownloadable