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DeepSeek-V4-Flash vs Kimi K2 (0905)

1 vs 1 benchmarks won

DeepSeek
DeepSeek-V4-Flash
Moonshot AI
Kimi K2 (0905)
Overview
CompanyDeepSeekMoonshot AI
Release dateApr 24 2026Sep 5 2025
Model type
Open sourceYesYes
Specifications
Parameters
1T
Context window
256k
Benchmarks
Science reasoning
GPQA Diamond
88.1%
75.1%
Software engineering
SWE-Bench Verified
65.8%
Multimodal understanding
MMMU
Timeline
Release gapKimi K2 (0905) shipped 231 days before DeepSeek-V4-Flash

Which is better: DeepSeek-V4-Flash or Kimi K2 (0905)?

DeepSeek-V4-Flash and Kimi K2 (0905) are evenly matched across the benchmarks they both publish. Kimi K2 (0905) shipped 231 days before DeepSeek-V4-Flash, 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.

On GPQA Diamond, DeepSeek-V4-Flash scores 88.1%, 13 points above Kimi K2 (0905) at 75.1%.

Frequently asked questions

When was DeepSeek-V4-Flash released?
DeepSeek-V4-Flash was released by DeepSeek on Apr 24 2026.
When was Kimi K2 (0905) released?
Kimi K2 (0905) was released by Moonshot AI on Sep 5 2025.
Which is better on GPQA Diamond, DeepSeek-V4-Flash or Kimi K2 (0905)?
DeepSeek-V4-Flash scores higher on GPQA Diamond — DeepSeek-V4-Flash 88.1% vs Kimi K2 (0905) 75.1%.

Other comparisons