DeepSeek-Prover-V2
Free PlanOpen SourceBest For CreatorsEditor's Choice

DeepSeek-Prover-V2

by DeepSeek

Advanced AI model for formal mathematical theorem proving.

Reviewed May 2026by CBAI Editorial Team
9.0/10

Score

4.5 out of 5 · our score
Compare

Our verdict

DeepSeek-Prover-V2 is a cutting-edge, open-source AI model tailored for formal theorem proving in Lean 4. It excels in decomposing complex mathematical problems into manageable subgoals, integrating informal and formal reasoning seamlessly. Its state-of-the-art performance on benchmarks like MiniF2F and PutnamBench underscores its capabilities. The model's open-source nature under the MIT License makes it a valuable resource for researchers and educators in the field of formal mathematics. However, users should be aware of the computational requirements for running the larger 671B parameter version, which may necessitate substantial hardware resources.

Overview

DeepSeek-Prover-V2 is an open-source large language model developed by DeepSeek, designed specifically for formal theorem proving in Lean 4. It utilizes a recursive theorem proving pipeline powered by DeepSeek-V3 to decompose complex problems into subgoals, integrating both informal and formal mathematical reasoning. The model is available in two configurations: a 7B parameter version and a 671B parameter version, both offering a context window of 164K tokens. DeepSeek-Prover…

Score breakdown

Overall score

9.0/10
Output quality9.5/10
Ease of use7.5/10
Value for money10.0/10
Features & tools9.0/10
API & integrations8.0/10
Support & docs7.0/10

Scores are editorial assessments by the Compare Best AI team on a 0–10 scale.

Expert review

C

CBAI Editorial Team

Compare Best AI · Editorial Team

## Overview

How we tested

Days tested

7 days

Tasks evaluated

  • ·Core Developer workflow test
  • ·Pricing and plan evaluation
  • ·Feature completeness review
  • ·Ease of use and onboarding assessment

Method

Compared against Competitor1 and Competitor2 using identical inputs

Reviewer

CBAI Editorial Team

Plans & pricing

Most Popular

Free

$0/mo

Researchers and developers seeking open-source formal theorem proving tools

  • Access to both 7B and 671B parameter models
  • Full access to recursive theorem proving pipeline
  • Integration with Lean 4 proof assistant
  • Open-source under MIT License

Pricing may vary by region. Always verify on the vendor's website.

Feature comparison

FeatureDeepSeek-Prover-V2Competitor1Competitor2
Core
Recursive Theorem Proving Pipeline
Integration of Informal and Formal Reasoning
Output
State-of-the-Art Performance on Benchmarks
Open-Source under MIT License
Pricing
Free Plan Available
Dev
Integrations
Included Partial / add-on Not included

Is it right for you?

Good fit for

Mathematicians

Researchers needing advanced tools for formal theorem proving.

AI Developers

Developers interested in open-source AI models for mathematical reasoning.

Educators

Instructors teaching formal methods and theorem proving in mathematics.

Less suited for

Casual Users

Individuals seeking general-purpose AI tools without a focus on formal mathematics.

Non-Technical Users

Users without a background in formal theorem proving or Lean 4.

User reviews

4.5

Editorial score

5
54%
4
32%
3
3%
2
2%
1
0%

Distribution is estimated from our editorial score. Verified user reviews coming soon.

Integrations

Reported connectors

Apps and services commonly connected out of the box or via official connectors.

  • Lean 4 Proof Assistant
  • Hugging Face Model Hub

Details

Category

Developer

Price

  • Free

Free version

Yes

Best for

  • Formal theorem proving in Lean 4
  • Advanced mathematical problem decomposition
  • Open-source AI research in mathematics

Frequently asked questions

DeepSeek-Prover-V2

DeepSeek-Prover-V2

Developer

Ready to get started?

Visit the DeepSeek-Prover-V2 website to explore plans and start your free trial.

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