Kimi K3.1 Pro vs Qwen3.8 27B
API pricing, context, and independently measured performance, side by side. Qwen3.8 27B starts 99% cheaper on input than Kimi K3.1 Pro at list prices.
Kimi K3.1 Pro
Moonshot AI · released Oct 23, 2026
Best input$0.40 / MTok
Best output$7.88 / MTok
Context1.05M
Providers19
Fastest measured0.77s° TTFT · 298 tok/s
Open weightsVisionToolsReasoningStructured outputPrompt caching
Qwen3.8 27B
Qwen · released Aug 14, 2026
Best input$0.005 / MTok
Best output$0.268 / MTok
Context1.02M
Providers25
Fastest measured0.52s° TTFT · 151 tok/s
Open weightsVisionToolsReasoningStructured outputPrompt caching
Cheapest providers, measuredUSD / MTOK
| MODEL | PROVIDER | INPUT | OUTPUT | TTFT | TPS | SMOKE |
|---|---|---|---|---|---|---|
| Kimi K3.1 Pro |  Relace | $0.40 | $7.88 | — | — | — |
| Kimi K3.1 Pro | PRPrimaLabs | $1.80 | $9.00 | 0.77s° | 298° tok/s | — |
| Kimi K3.1 Pro |  Wafer | $1.80 | $9.00 | — | — | — |
| Qwen3.8 27B |  PrimeIntellect | $0.005 | $0.268 | — | — | — |
| Qwen3.8 27B |  Darkbloom | $0.035 | $1.50 | 5.1s° | 93° tok/s | — |
| Qwen3.8 27B |  Chutes | $0.039 | $1.25 | 3.2s° | 54° tok/s | 4/5 |
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