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DeepSeek V3.1 vs Kimi K2 Thinking

0 vs 1 benchmarks won

DeepSeek
DeepSeek V3.1
Moonshot AI
Kimi K2 Thinking
Overview
CompanyDeepSeekMoonshot AI
Release dateAug 21 2025Nov 6 2025
Model type
Open sourceYesYes
Specifications
Parameters
1T
Context window
256k
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
71.3%
Multimodal understanding
MMMU
Timeline
Release gapDeepSeek V3.1 shipped 77 days before Kimi K2 Thinking

Which is better: DeepSeek V3.1 or Kimi K2 Thinking?

Kimi K2 Thinking leads DeepSeek V3.1 on 1 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). DeepSeek V3.1 shipped 77 days before Kimi K2 Thinking, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

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 V3.1 released?
DeepSeek V3.1 was released by DeepSeek on Aug 21 2025.
When was Kimi K2 Thinking released?
Kimi K2 Thinking was released by Moonshot AI on Nov 6 2025.

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