# ByteDance Seed publishes BFS-Prover-V2-32B for Lean4 proving

> ByteDance Seed released BFS-Prover-V2-32B, a 32B parameter model fine-tuned from Qwen2.5-32B for step-based formal proving in Lean4. Published on Hugging Face under Apache-2.0 license.

| | |
|---|---|
| **Tool** | ByteDance Seed |
| **Version** | — |
| **Kind** | release |
| **Published** | 2025-09-30 |
| **Observed** | 2026-08-11 |
| **Significance** | 1/5 |
| **Breaking** | no |
| **Categories** | capability |

> **Note:** this classification is below our confidence threshold and is pending human review.

## What changed


- 32B parameter, fine-tuned from Qwen2.5-32B
- Domain: Lean4 step-prover
- License: Apache-2.0
- Referenced paper: arxiv:2509.06493
- Pipeline: text-generation


## Sources

- [hf_model](https://huggingface.co/ByteDance-Seed/BFS-Prover-V2-32B) — retrieved 2026-08-11


## Community

_No curated reactions recorded. Facts and community takes are kept in separate layers
and never blended._

---
Canonical: https://changelogs.info/bytedance-seed/bytedance-seed-publishes-bfs-prover-v2-32b-for-lean4-proving
Entity: https://changelogs.info/bytedance-seed
Event ID: `evt_2025-09-30_bytedance-seed_bytedance-seed-bfs-prover-v2-32b`
Licence: event synthesis © changelogs.info, CC BY 4.0. Linked sources belong to their vendors.