DeepSeek V4.1 Flash vs Kimi K3
API pricing, context, and independently measured performance, side by side. DeepSeek V4.1 Flash starts 93% cheaper on input than Kimi K3 at list prices.
DeepSeek V4.1 Flash
DeepSeek · released Sep 10, 2026
Best input$0.15 / MTok
Best output$0.60 / MTok
Context1.05M
Providers18
Fastest measured0.64s° TTFT · 281 tok/s
Open weightsVisionToolsReasoningStructured outputPrompt caching
Kimi K3
Moonshot AI · released Jul 16, 2026
Best input$2.10 / MTok
Best output$10.95 / MTok
Context1.05M
Providers20
Fastest measured0.63s° TTFT · 102 tok/s
Open weightsVisionToolsReasoningStructured outputPrompt caching
Cheapest providers, measuredUSD / MTOK
| MODEL | PROVIDER | INPUT | OUTPUT | TTFT | TPS | SMOKE |
|---|---|---|---|---|---|---|
| DeepSeek V4.1 Flash | RERelace | $0.15 | $0.60 | — | — | — |
| DeepSeek V4.1 Flash |  DeepSeek | $0.15 | $0.60 | — | — | — |
| DeepSeek V4.1 Flash | MOMorph | $0.18 | $0.72 | — | — | — |
| Kimi K3 | INInferenceNet | $2.10 | $10.95 | 57.9s° | 7° tok/s | — |
| Kimi K3 | MOMorph | $2.38 | $13.30 | — | — | 1/5 |
| Kimi K3 | RERelace | $2.40 | $12.00 | — | — | — |
TTFT/TPS: ModelIndex-measured medians (P50, trailing 21d) · chat10k profile (~10K in / 200 out) · ° = measured via OpenRouter routing (adds a hop) · SMOKE: of 5 programmatic capability probes passed · methodology v1.1 — full details on each model page