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DeepSeek V2 vs Mistral Medium 3.5

DeepSeek DeepSeek V2 vs Mistral Mistral Medium 3.5 — side-by-side specs.

DeepSeek
DeepSeek V2
Mistral
Mistral Medium 3.5
Overview
CompanyDeepSeekMistral
Release dateMay 2024Apr 30 2026
Model type
Open sourceYesNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapDeepSeek V2 shipped 729 days before Mistral Medium 3.5

Which is better: DeepSeek V2 or Mistral Medium 3.5?

DeepSeek V2 and Mistral Medium 3.5 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. DeepSeek V2 shipped 729 days before Mistral Medium 3.5, so benchmark comparisons should account for the intervening progress.

DeepSeek V2 is an open-source / open-weight model; Mistral Medium 3.5 is proprietary.

Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.

Frequently asked questions

When was DeepSeek V2 released?
DeepSeek V2 was released by DeepSeek on May 2024.
When was Mistral Medium 3.5 released?
Mistral Medium 3.5 was released by Mistral on Apr 30 2026.
Is DeepSeek V2 or Mistral Medium 3.5 open source?
DeepSeek V2 is an open-source / open-weight model released by DeepSeek. Mistral Medium 3.5 is a proprietary model released by Mistral.

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