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DeepSeek V4.1 Flash vs Qwen3.8 Flash

Side by side

SpecDeepSeek V4.1 FlashQwen3.8 Flash
Lowest input$0.12Morph$0.113DeepInfra
Lowest output$0.42DeepInfra$0.382DeepInfra
Lowest cached input$0.003Doubleword$0.0141DeepInfra
Context1.05M1M
Max output524K131K
Providers91
ReleasedSeptember 10, 2026August 26, 2026
WeightsOpenProprietary
LabDeepSeekQwen
Model IDdeepseek/deepseek-v4.1-flashqwen/qwen3.8-flash

USD per 1M tokens, as of November 5, 2026.

Price by provider

ProviderDeepSeek V4.1 FlashQwen3.8 Flash
DeepInfra$0.14 / $0.42$0.113 / $0.382
Doubleword$0.15 / $0.60–
Inference.net$0.30 / $1.00–
Morph$0.12 / $0.80–
Nebius$0.30 / $1.20–
Novita AI$0.30 / $1.20–
RunInfra$0.14 / $0.58–
StreamLake$0.30 / $1.20–
Wafer$0.19 / $0.65–

Input / output, USD per 1M tokens.

Cost

Model1,000 chat replies2K in, 500 out each1,000 agent tasks50K in, 5K out eachMonthly batch job500M in, 50M out
DeepSeek V4.1 FlashDeepInfra$0.49$9.10$91.00
Qwen3.8 FlashDeepInfra$0.42$7.56$75.60

On each model's cheapest provider by input plus output list price.

FAQ

Which is cheaper, DeepSeek V4.1 Flash or Qwen3.8 Flash?

Input: Qwen3.8 Flash at $0.113 per million input tokens vs $0.12 (DeepSeek V4.1 Flash), 6% lower. Output: Qwen3.8 Flash at $0.382 per million output tokens vs $0.42 (DeepSeek V4.1 Flash), 10% lower. Lowest listed prices as of November 5, 2026.

Which has the longer context window?

DeepSeek V4.1 Flash, with 1.05M tokens vs 1M.

Which providers serve both DeepSeek V4.1 Flash and Qwen3.8 Flash?

1 provider serves both: DeepInfra. DeepSeek V4.1 Flash has 9 providers in total and Qwen3.8 Flash has 1.

Do DeepSeek V4.1 Flash and Qwen3.8 Flash have cached input pricing?

DeepSeek V4.1 Flash from $0.003 per million cached input tokens (Doubleword). Qwen3.8 Flash from $0.0141 (DeepInfra).

Can I switch between DeepSeek V4.1 Flash and Qwen3.8 Flash without changing code?

Yes. Both use the same OpenAI-compatible endpoint, https://api.routerplus.com/v1, and key. Change the model field from "deepseek/deepseek-v4.1-flash" to "qwen/qwen3.8-flash".

All comparisons

Run DeepSeek V4.1 Flash and Qwen3.8 Flash on one key