DeepSeek V4 Flash 0731 vs Qwen3.8 27B
API pricing, context, and independently measured performance, side by side. Qwen3.8 27B starts 44% cheaper on input than DeepSeek V4 Flash 0731 at list prices.
DeepSeek V4 Flash 0731
DeepSeek · released Jul 31, 2026
Best input$0.045 / MTok
Best output$0.09 / MTok
Context1.05M
Providers30
Fastest measured0.39s° TTFT · 210 tok/s
Open weightsToolsReasoningStructured outputPrompt caching
Qwen3.8 27B
Qwen · released Aug 14, 2026
Best input$0.025 / MTok
Best output$0.25 / MTok
Context1.02M
Providers26
Fastest measured0.52s° TTFT · 151 tok/s
Open weightsVisionToolsReasoningStructured outputPrompt caching
Cheapest providers, measuredUSD / MTOK
| MODEL | PROVIDER | INPUT | OUTPUT | TTFT | TPS | SMOKE |
|---|---|---|---|---|---|---|
| DeepSeek V4 Flash 0731 |  Engy | $0.045 | $0.09 | — | — | — |
| DeepSeek V4 Flash 0731 |  Wafer | $0.059 | $0.30 | 0.39s° | 210° tok/s | — |
| DeepSeek V4 Flash 0731 |  DeepInfra | $0.06 | $0.18 | 0.75s° | 79° tok/s | — |
| Qwen3.8 27B |  PrimeIntellect | $0.025 | $1.37 | 0.93s° | 87° tok/s | — |
| Qwen3.8 27B | FLFlonno | $0.03 | $0.25 | — | — | — |
| Qwen3.8 27B |  Darkbloom | $0.035 | $1.50 | 5.1s° | 93° tok/s | — |
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