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  5. DeepSeek V4.1 FlashvsGLM 5.3 FlashX
Updated Sep 2026

DeepSeek V4.1 FlashvsGLM 5.3 FlashX

DeepSeek V4.1 Flash is cheaper than GLM 5.3 FlashX at $0.15/M vs $0.37/M input tokens.

DeepSeek V4.1 Flash and GLM 5.3 FlashX compared across 6 shared prompts
SpecDeepSeek V4.1 FlashGLM 5.3 FlashX
Input price$0.15/M tokens$0.37/M tokens
Output price$0.6/M tokens$1.25/M tokens
Context window1.0M tokens1.0M tokens
WeightsOpen—
Free API (OpenRouter)NoNo
ReleasedSep 2026Sep 2026
Our Verdict
DeepSeek V4.1 Flash
DeepSeek V4.1 Flash
GLM 5.3 FlashX
GLM 5.3 FlashX

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
2.5× cheaper
Output
$0.60
2.1× cheaper
GLM 5.3 FlashX
Input
$0.37
Output
$1.25

DeepSeek V4.1 Flash is cheaper on both: 2.5× input, 2.1× output.

Where to run it

24 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
GLM 5.3 FlashX1 host
HostInOutContextUptime
Z.aifp8$0.37 in·$1.25 out·1M·100% up

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 GLM 5.3 FlashX is developed by Zhipu AI. DeepSeek V4.1 Flash has a 1.0M token context window vs GLM 5.3 FlashX'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 GLM 5.3 FlashX 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 GLM 5.3 FlashX costs $0.37/M input tokens. DeepSeek V4.1 Flash is $0.22/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 GLM 5.3 FlashX 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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GLM 5.3 FlashX vs GLM 5.3Same lab
GLM 5.3 FlashX logoGLM 5.3 Flash logo
GLM 5.3 FlashX vs GLM 5.3 FlashSame lab
DeepSeek V4.1 Flash logoGemini 3.6 Flash logo
DeepSeek V4.1 Flash vs Gemini 3.6 FlashSame size
DeepSeek V4.1 Flash logoGemini 3.7 Flash logo
DeepSeek V4.1 Flash vs Gemini 3.7 FlashSame size
DeepSeek V4.1 Flash logoGemini 3.8 Flash logo
DeepSeek V4.1 Flash vs Gemini 3.8 FlashSame size
DeepSeek V4.1 Flash logoGemini Pro 1.0 logo
DeepSeek V4.1 Flash vs Gemini Pro 1.0Same size

Model pages

DeepSeek V4.1 Flash logo
DeepSeek V4.1 Flash6 outputs, specs and price
GLM 5.3 FlashX logo
GLM 5.3 FlashX12 outputs, specs and price
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