Qwen3.8 Max Prime is the newer model, released after Quasar Alpha.
Whole landing page for a startup that reads your face. It renders or it doesn't.
Which answer wins?
| Spec | ||
|---|---|---|
| Input price | — | $4/M tokens |
| Output price | — | $12/M tokens |
| Context window | 1.0M tokens | 1.0M tokens |
| Weights | — | Closed |
| Free API (OpenRouter) | — | No |
| Released | Apr 2025 | Sep 2026 |
| At 10M a month | not listed | $40.00 |
Input tokens at list price. No caching, no batch discount.
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 28 Sep 2026.
Quasar Alpha is developed by OpenRouter while Qwen3.8 Max Prime is developed by Qwen. Quasar Alpha has a 1.0M token context window vs Qwen3.8 Max Prime's 1.0M. You can compare their actual outputs across 3 challenges on Rival to see how they differ in practice.
It depends on your use case. Quasar Alpha and Qwen3.8 Max Prime each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 3 challenges so you can judge which fits your needs best.
This page shows a side-by-side comparison of Quasar Alpha and Qwen3.8 Max Prime 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.