DeepSeek-V4-FlashvsKimi K2
DeepSeek-V4-Flash | Kimi K2 | |
|---|---|---|
| Specifications | ||
ParametersA rough measure of how big the model is. More parameters usually means more capable and more expensive to run, though it is a poor guide on its own — a smaller, newer model often beats a larger, older one. | — | 1T |
Context windowHow much text the model can hold in mind at once — your question, any documents you attach, the conversation so far, and its own reply. Go past it and the earliest part falls out of view. | — | 128k |
| API pricingUSD per 1M tokens · lower wins | ||
Cheapest inputLowest input rate across third-party providers, excluding the lab itself. The cheapest endpoint may run a quantised build or a shorter context — see "Available from" on the model page. | $0.0679DigitalOcean | $0.57Novita |
Cheapest outputLowest output rate across third-party providers, excluding the lab itself. May come from a different provider than the cheapest input. | $0.1621StreamLake | $2.30Novita |
| Benchmarks | ||
BullshitBench v2Nonsense detection — Given 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% | 10% |
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 88.1% | 75.1% |
| BenchmarksPublished by one model only | ||
SWE-Bench VerifiedCoding — Real 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% |
LiveCodeBenchCompetitive coding — Coding 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% | — |
| Overview | ||
| Company | DeepSeek | Moonshot AI |
| Release date | Apr 24 2026 | Jul 11 2025 |
| Access | Open Weight | Open Weight |
Other comparisons
DeepSeek-V4-FlashvsClaude Fable 5.1Kimi K2vsClaude Fable 5.1DeepSeek-V4-FlashvsGPT-6 AstraKimi K2vsGPT-6 AstraDeepSeek-V4-FlashvsGemini 3.8 FlashKimi K2vsGemini 3.8 FlashDeepSeek-V4-FlashvsMuse Spark 1.3Kimi K2vsMuse Spark 1.3DeepSeek-V4-FlashvsGrok 4.6Kimi K2vsGrok 4.6DeepSeek-V4-FlashvsMistral Medium 3.5Kimi K2vsMistral Medium 3.5
Frequently asked questions
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%.