DeepSeek V4 Pro vs 
Quasar Alpha
DeepSeek V4 Pro has a larger context window than Quasar Alpha (1.0M tokens vs 1.0M tokens).
Minimalist Landing Page
Whole landing page for a startup that reads your face. It renders or it doesn't.
Loading the build
Loading the build
Which answer wins?
Price and specs
Not enough votes to call it. On the specs, DeepSeek V4 Pro has the edge: bigger model tier, newer, major provider backing.
| Spec | DeepSeek V4 Pro | Quasar Alpha |
|---|---|---|
| Input price | $1.74/M tokens | — |
| Output price | $3.48/M tokens | — |
| Context window | 1.0M tokens | 1.0M tokens |
| Weights | Open | — |
| Free API (OpenRouter) | No | — |
| Released | Apr 2026 | Apr 2025 |
| At 10M a month | $17.40 | not listed |
Input tokens at list price. No caching, no batch discount.
Where to run it
DeepSeek V4 Pro15 hosts
- Relacefp4$0.18 in$4.20 out1M100% up
- Baidu Qianfanfp8$0.18 in$0.35 out1M99.1% up
- StreamLakefp8$0.21 in$0.42 out1M100% up
- Parasailfp8$0.45 in$3.48 out1M93.5% up
- GMI Cloudfp8$0.96 in$1.91 out1M96.6% up
- DigitalOcean$1.04 in$2.09 out1M100% up
9 more hostsFewer hosts
- Reka$1.05 in$10.50 out1M100% up
- Cloudflare Workers AI$1.15 in$2.55 out1M99.8% up
- DeepInfrafp8$1.30 in$2.60 out1M100% up
- Alibaba Cloudfp8$1.42 in$2.83 out1M97.5% up
- SiliconFlowfp8$1.50 in$3.13 out1M95.7% up
- Novitafp8$1.60 in$3.20 out1M100% up
- Venice$1.65 in$3.30 out1M97.4% up
- AtlasCloudfp4$1.68 in$3.38 out1M99.6% up
- Azure AI Foundry$1.91 in$3.83 out1M100% up
Quasar Alpha
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.
Common questions
What is the difference between DeepSeek V4 Pro and Quasar Alpha?
DeepSeek V4 Pro is developed by DeepSeek while Quasar Alpha is developed by OpenRouter. DeepSeek V4 Pro has a 1.0M token context window vs Quasar Alpha's 1.0M. You can compare their actual outputs across 6 challenges on Rival to see how they differ in practice.
Which is better, DeepSeek V4 Pro or Quasar Alpha?
It depends on your use case. DeepSeek V4 Pro and Quasar Alpha 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.
How can I compare DeepSeek V4 Pro and Quasar Alpha on Rival?
This page shows a side-by-side comparison of DeepSeek V4 Pro and Quasar 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.
More comparisons
Against the newest arrivals
- DeepSeek V4 Pro vs Step 5 PreviewLanded Oct 2026
- Quasar Alpha vs Claude Haiku 5.5Landed Oct 2026
- DeepSeek V4 Pro vs Ling 3.1 FlashLanded Oct 2026
- Quasar Alpha vs Mistral Large 4Landed Oct 2026
- DeepSeek V4 Pro vs GPT-6.1 SolLanded Sep 2026
- Quasar Alpha vs Claude Sonnet 5.5Landed Sep 2026
- DeepSeek V4 Pro vs Solar Mini 4Landed Sep 2026
- Quasar Alpha vs Qwen3.8 Max PrimeLanded Sep 2026
Same lab, same size, long tail
- DeepSeek V4 Pro vs DeepSeek V4 Flash Vision ExpSame lab
- DeepSeek V4 Pro vs DeepSeek V4.1 FlashSame lab
- Quasar Alpha vs Ox AlphaSame lab
- Quasar Alpha vs OpenRouter Fusion · Budget (Jun 2026)Same lab
- DeepSeek V4 Pro vs Grok 3Same size
- DeepSeek V4 Pro vs Grok 3 BetaSame size
- DeepSeek V4 Pro vs Grok 3 Mini BetaNew provider
- DeepSeek V4 Pro vs Grok 3 ThinkingSame size
