DeepSeek-V4-FlashvsKimi K2
DeepSeek-V4-Flash | Kimi K2 | |
|---|---|---|
| Specifications | ||
Parameters | — | 1T |
Context window | — | 128k |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | 18%Best | 10% |
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | — | 65.8% |
Competitive coding LiveCodeBenchCoding problems published so recently the AI can't have seen them in training — a contamination-free test of raw programming skill. Higher is better. | 91.6% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 88.1%Best | 75.1% |
| Timeline | ||
| Release gap | Kimi K2 shipped 287 days before DeepSeek-V4-Flash | |
| Overview | ||
| Company | DeepSeek | Moonshot AI |
| Release date | Apr 24 2026 | Jul 11 2025 |
| Access | Open Weight | Open Weight |
Which is better: DeepSeek-V4-Flash or Kimi K2?
DeepSeek-V4-Flash leads Kimi K2 on 2 of the 2 benchmarks they both report (BullshitBench v2, GPQA Diamond). Kimi K2 shipped 287 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 BullshitBench v2, DeepSeek-V4-Flash leads at 18% vs Kimi K2 at 10%. On GPQA Diamond, DeepSeek-V4-Flash leads at 88.1% vs Kimi K2 at 75.1%.
Frequently asked questions
DeepSeek-V4-Flash was released by DeepSeek on Apr 24 2026.
Kimi K2 was released by Moonshot AI on Jul 11 2025.
DeepSeek-V4-Flash leads on GPQA Diamond — DeepSeek-V4-Flash 88.1% vs Kimi K2 75.1%.
Other comparisons
DeepSeek-V4-FlashvsClaude Sonnet 5Kimi K2vsClaude Sonnet 5DeepSeek-V4-FlashvsGPT-5.6 SolKimi K2vsGPT-5.6 SolDeepSeek-V4-FlashvsGemini 3.6 FlashKimi K2vsGemini 3.6 FlashDeepSeek-V4-FlashvsMuse Spark 1.1Kimi K2vsMuse Spark 1.1DeepSeek-V4-FlashvsGrok 4.5Kimi K2vsGrok 4.5DeepSeek-V4-FlashvsMistral Medium 3.5Kimi K2vsMistral Medium 3.5