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  5. DeepSeek V4.1 FlashvsGemini 2.5 Flash Lite Preview 09-2025
Updated Sep 2026

DeepSeek V4.1 FlashvsGemini 2.5 Flash Lite Preview 09-2025

Gemini 2.5 Flash Lite Preview 09-2025 is cheaper than DeepSeek V4.1 Flash at $0.1/M vs $0.15/M input tokens.

DeepSeek V4.1 Flash and Gemini 2.5 Flash Lite Preview 09-2025 compared across 6 shared prompts
SpecDeepSeek V4.1 FlashGemini 2.5 Flash Lite Preview 09-2025
Input price$0.15/M tokens$0.1/M tokens
Output price$0.6/M tokens$0.4/M tokens
Context window1.0M tokens1.0M tokens
WeightsOpen—
Free API (OpenRouter)NoNo
ReleasedSep 2026Sep 2025
Our Verdict
DeepSeek V4.1 Flash
DeepSeek V4.1 Flash
Gemini 2.5 Flash Lite Preview 09-2025
Gemini 2.5 Flash Lite Preview 09-2025

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
Gemini 2.5 Flash Lite Preview 09-2025
Input
$0.10
1.5× cheaper
Output
$0.40
1.5× cheaper

Gemini 2.5 Flash Lite Preview 09-2025 is cheaper on both: 1.5× input, 1.5× output.

Where to run it

23 hosts, cheapest first

DeepSeek V4.1 Flash23 hosts
HostInOutContextUptime
MMorph$0.12 in·$0.48 out·1M·98.4% upRRelacefp4$0.13 in·$0.52 out·1M·99.9% upSSail Researchfp4$0.13 in·$0.75 out·1M·99.9% 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% up
17 more hostsFewer hosts
SStreamLakefp8$0.15 in·$0.60 out·1M·99.5% upWWafer$0.20 in·$0.60 out·1M·99.8% upCCoreWeavefp8$0.20 in·$0.65 out·1M·99.1% upOOpenInferencefp4$0.20 in·$0.80 out·1M·99.4% upFFireworks$0.22 in·$0.66 out·1M·98.4% upPPhala$0.28 in·$1.10 out·1M·99.4% upGGMI Cloudfp8$0.28 in·$1.14 out·1M·99.7% upNNovitafp8$0.28 in·$1.14 out·1M·100% upAAtlasCloudfp8$0.30 in·$1.20 out·1M·99.8% upBBasetenfp8$0.30 in·$1.20 out·1M·98.2% upMMakora$0.30 in·$1.20 out·1M·98.7% upModal$0.30 in·$1.20 out·1M·99.8% upPParasailfp8$0.30 in·$1.20 out·1M·93% upSSiliconFlowfp8$0.30 in·$1.20 out·1M·99.8% upTTogether$0.30 in·$1.20 out·1M·100% upVVenicefp8$0.38 in·$1.50 out·1M·94.5% upDDigitalOceandegraded$0.30 in·$1.20 out·1M·98.1% up
Gemini 2.5 Flash Lite Preview 09-2025

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 Gemini 2.5 Flash Lite Preview 09-2025 is developed by Google AI. DeepSeek V4.1 Flash has a 1.0M token context window vs Gemini 2.5 Flash Lite Preview 09-2025's 1.0M. You can compare their actual outputs across 6 challenges on Rival to see how they differ in practice.

It depends on your use case. DeepSeek V4.1 Flash and Gemini 2.5 Flash Lite Preview 09-2025 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 6 challenges so you can judge which fits your needs best.

DeepSeek V4.1 Flash costs $0.15/M input tokens and Gemini 2.5 Flash Lite Preview 09-2025 costs $0.1/M input tokens. Gemini 2.5 Flash Lite Preview 09-2025 is $0.05/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 Gemini 2.5 Flash Lite Preview 09-2025 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.

Keep exploring

More comparisons

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Same lab, same size, long tail

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Gemini 2.5 Flash Lite Preview 09-2025 vs Gemini 3.8 FlashSame lab
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DeepSeek V4.1 Flash logoGemma 3 12B logo
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Model pages

DeepSeek V4.1 Flash logo
DeepSeek V4.1 Flash6 outputs, specs and price
Gemini 2.5 Flash Lite Preview 09-2025 logo
Gemini 2.5 Flash Lite Preview 09-202559 outputs, specs and price
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