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DeepSeek-Prover-V2 (7B, 671B)

DeepSeek · 30 April 2025

Lean 4 prover built on V3: 88.9% on miniF2F-test and 49 of 658 PutnamBench problems, using V3-driven subgoal decomposition for cold-start data.

DeepSeek-V3 decomposes theorems into subgoals and formalizes them in Lean 4 to create cold-start data; RL with binary Lean-verifier reward then links informal reasoning to formal proof. Adds ProverBench (325 problems).

Date
Wednesday, 30 April 2025
Lab
DeepSeek
Kind
open-weights
Access
open weights (restricted license)

Figures

MeasureValueMeasured by
miniF2F-test pass ratio88.9%
49 of 658 PutnamBench problems solved (671B)
company

License tag not re-read; earlier Prover releases used DeepSeek's Model License.

Sources

  1. huggingface.co/deepseek-ai/DeepSeek-Prover-V2-671B
  2. en.wikipedia.org/wiki/DeepSeek_(chatbot)

This record was checked against its sources on 6 October 2026. How we check

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