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  5. DeepSeek V4.1 FlashvsSonoma Dusk Alpha
Updated Sep 2026

DeepSeek V4.1 FlashvsSonoma Dusk Alpha

Sonoma Dusk Alpha is cheaper than DeepSeek V4.1 Flash at $0/M vs $0.15/M input tokens.

DeepSeek V4.1 Flash and Sonoma Dusk Alpha compared across 1 shared prompts
SpecDeepSeek V4.1 FlashSonoma Dusk Alpha
Input price$0.15/M tokensFree
Output price$0.6/M tokensFree
Context window1.0M tokens2.0M tokens
WeightsOpen—
Free API (OpenRouter)NoNo
ReleasedSep 2026Sep 2025
Our Verdict
DeepSeek V4.1 Flash
DeepSeek V4.1 Flash
Sonoma Dusk Alpha
Sonoma Dusk Alpha

Not enough votes to call it. On the specs, nothing separates them.

Too close to call
API pricing

Cost per 1M tokens

DeepSeek V4.1 Flash
Input
$0.15
Output
$0.60
Sonoma Dusk Alpha
Input
$0.000
Output
$0.000
Where to run it

22 hosts, cheapest first

DeepSeek V4.1 Flash22 hosts
HostInOutContextUptime
MMorph$0.12 in·$0.48 out·1M·97.8% upRRelacefp4$0.13 in·$0.52 out·1M·99.8% upDDeepInfrafp8$0.14 in·$0.42 out·1M·99.7% upAlibaba Cloud$0.15 in·$0.60 out·1M·99.9% upDeepSeek$0.15 in·$0.60 out·1M·100% upSStreamLakefp8$0.15 in·$0.60 out·1M·99.4% up
16 more hostsFewer hosts
SSail Researchfp4$0.20 in·$0.60 out·1M·99.9% upWWafer$0.20 in·$0.60 out·1M·99.8% upCCoreWeavefp8$0.20 in·$0.65 out·1M·99.5% upFFireworks$0.22 in·$0.66 out·1M·98.3% upPPhala$0.28 in·$1.10 out·1M·99.3% upGGMI Cloudfp8$0.28 in·$1.14 out·1M·98.8% upNNovitafp8$0.28 in·$1.14 out·1M·100% upAAtlasCloudfp8$0.30 in·$1.20 out·1M·99.4% upBBasetenfp8$0.30 in·$1.20 out·1M·98.4% upDDigitalOcean$0.30 in·$1.20 out·1M·98.1% upMMakora$0.30 in·$1.20 out·1M·98.3% upModal$0.30 in·$1.20 out·1M·99.9% upSSiliconFlowfp8$0.30 in·$1.20 out·1M·99.7% upTTogether$0.30 in·$1.20 out·1M·99.9% upVVenicefp8$0.38 in·$1.50 out·1M·97% upPParasailfp8degraded$0.30 in·$1.20 out·1M·92.4% up
Sonoma Dusk Alpha

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

DeepSeek V4.1 Flash is developed by DeepSeek while Sonoma Dusk Alpha is developed by OpenRouter. DeepSeek V4.1 Flash has a 1.0M token context window vs Sonoma Dusk Alpha's 2.0M. You can compare their actual outputs across 1 challenges on Rival to see how they differ in practice.

It depends on your use case. DeepSeek V4.1 Flash and Sonoma Dusk Alpha each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 1 challenges so you can judge which fits your needs best.

DeepSeek V4.1 Flash costs $0.15/M input tokens and Sonoma Dusk Alpha costs $0/M input tokens. Sonoma Dusk Alpha is $0.15/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of DeepSeek V4.1 Flash and Sonoma Dusk Alpha across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

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Model pages

DeepSeek V4.1 Flash logo
DeepSeek V4.1 Flash2 outputs, specs and price
Sonoma Dusk Alpha logo
Sonoma Dusk Alpha35 outputs, specs and price
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