Claude Opus 4.5vsDeepSeek V4.1 Flash
DeepSeek V4.1 Flash is the newer model, released after Claude Opus 4.5.
| Spec | Claude Opus 4.5 | DeepSeek V4.1 Flash |
|---|---|---|
| Input price | — | $0.15/M tokens |
| Output price | — | $0.6/M tokens |
| Context window | — | 1.0M tokens |
| Weights | Closed | Open |
| Free API (OpenRouter) | No | No |
| Released | Nov 2025 | Sep 2026 |
Our Verdict
Claude Opus 4.5
DeepSeek V4.1 Flash
Not enough votes to call it. On the specs, nothing separates them.
Too close to call
API pricing
Cost per 1M tokens
Claude Opus 4.5
Input
—
Output
—
DeepSeek V4.1 Flash
Input
$0.15
Output
$0.60
Where to run it
27 hosts, cheapest first
DeepSeek V4.1 Flash23 hosts
OpenInferencefp4$0.10 in$0.50 out1M99.5% upWafer$0.12 in$0.60 out1M99.7% upRelacefp4$0.12 in$0.52 out1M99.9% upMorph$0.13 in$0.51 out1M98.4% upSail Researchfp4$0.13 in$0.75 out1M99.9% upDeepInfrafp8$0.14 in$0.42 out1M99.7% up
17 more hostsFewer hosts
StreamLakefp8$0.15 in$0.60 out1M99.5% upCoreWeavefp8$0.20 in$0.65 out1M99.2% upFireworks$0.22 in$0.66 out1M98.8% upPhala$0.28 in$1.10 out1M99.4% upGMI Cloudfp8$0.28 in$1.14 out1M99.6% upNovitafp8$0.28 in$1.14 out1M100% upAlibaba Cloud$0.30 in$1.20 out1M99.9% upAtlasCloudfp8$0.30 in$1.20 out1M99.7% upBasetenfp8$0.30 in$1.20 out1M99.4% upDeepSeek$0.30 in$1.20 out1M100% upDigitalOcean$0.30 in$1.20 out1M97.9% upMakora$0.30 in$1.20 out1M98.9% upModal$0.30 in$1.20 out1M99.8% upSiliconFlowfp8$0.30 in$1.20 out1M99.8% upTogether$0.30 in$1.20 out1M99.9% upVenicefp8$0.38 in$1.50 out1M96.7% upParasailfp8degraded$0.30 in$1.20 out1M93% up
Per million tokens. Prices and uptime via OpenRouter, checked 23 Sep 2026.
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