Quasar Alpha vs 
Qwen Plus 0728 (thinking)
Qwen Plus 0728 (thinking) is the newer model, released after Quasar Alpha.
Minimalist Landing Page
Whole landing page for a startup that reads your face. It renders or it doesn't.
Loading the build
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Which answer wins?
Price and specs
| Spec | Quasar Alpha | Qwen Plus 0728 (thinking) |
|---|---|---|
| Input price | — | $0.4/M tokens |
| Output price | — | $4/M tokens |
| Context window | 1.0M tokens | 1.0M tokens |
| Free API (OpenRouter) | — | No |
| Released | Apr 2025 | Sep 2025 |
| At 10M a month | not listed | $4.00 |
Input tokens at list price. No caching, no batch discount.
Common questions
What is the difference between Quasar Alpha and Qwen Plus 0728 (thinking)?
Quasar Alpha is developed by OpenRouter while Qwen Plus 0728 (thinking) is developed by Qwen. Quasar Alpha has a 1.0M token context window vs Qwen Plus 0728 (thinking)'s 1.0M. You can compare their actual outputs across 2 challenges on Rival to see how they differ in practice.
Which is better, Quasar Alpha or Qwen Plus 0728 (thinking)?
It depends on your use case. Quasar Alpha and Qwen Plus 0728 (thinking) each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 2 challenges so you can judge which fits your needs best.
How can I compare Quasar Alpha and Qwen Plus 0728 (thinking) on Rival?
This page shows a side-by-side comparison of Quasar Alpha and Qwen Plus 0728 (thinking) 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
- Quasar Alpha vs Step 5 PreviewLanded Oct 2026
- Qwen Plus 0728 (thinking) vs Claude Haiku 5.5Landed Oct 2026
- Quasar Alpha vs Ling 3.1 FlashLanded Oct 2026
- Qwen Plus 0728 (thinking) vs Mistral Large 4Landed Oct 2026
- Quasar Alpha vs GPT-6.1 SolLanded Sep 2026
- Qwen Plus 0728 (thinking) vs Claude Sonnet 5.5Landed Sep 2026
- Quasar Alpha vs Solar Mini 4Landed Sep 2026
- Qwen Plus 0728 (thinking) vs Qwen3.8 Max PrimeLanded Sep 2026
Same lab, same size, long tail
- Quasar Alpha vs Ox AlphaSame lab
- Quasar Alpha vs OpenRouter Fusion · Budget (Jun 2026)Same lab
- Qwen Plus 0728 (thinking) vs Qwen3.8 Omni FlashSame lab
- Qwen Plus 0728 (thinking) vs Qwen3.7 FlashSame lab
- Quasar Alpha vs Gemini 3.1 Flash Lite PreviewNew provider
- Quasar Alpha vs Gemini 3.1 Pro PreviewNew provider
- Quasar Alpha vs Gemini 3.5 FlashSame size
- Quasar Alpha vs Gemini 3.6 FlashSame size
