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DeepSeek V3.1 vs Kimi K2

0 vs 2 benchmarks won

DeepSeek
DeepSeek V3.1
Moonshot AI
Kimi K2
Overview
CompanyDeepSeekMoonshot AI
Release dateAug 21 2025Jul 11 2025
Model type
Open sourceYesYes
Specifications
Parameters
1T
Context window
128k
Benchmarks
Science reasoning
GPQA Diamond
75.1%
Software engineering
SWE-Bench Verified
65.8%
Multimodal understanding
MMMU
Timeline
Release gapKimi K2 shipped 41 days before DeepSeek V3.1

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

Kimi K2 leads DeepSeek V3.1 on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Kimi K2 shipped 41 days before DeepSeek V3.1, 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 released?
Kimi K2 was released by Moonshot AI on Jul 11 2025.

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