OpenAI o3 vs 
Quasar Alpha
OpenAI o3 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
Not enough votes to call it. On the specs, OpenAI o3 has the edge: bigger model tier, major provider backing.
| Spec | OpenAI o3 | Quasar Alpha |
|---|---|---|
| Input price | $10/M tokens | — |
| Output price | $40/M tokens | — |
| Context window | — | 1.0M tokens |
| Parameters | Not disclosed | Not disclosed |
| Weights | Closed | — |
| Free API (OpenRouter) | No | — |
| Released | Apr 2025 | Apr 2025 |
| At 10M a month | $100 | not listed |
Input tokens at list price. No caching, no batch discount.
Where to run it
OpenAI o31 host
Quasar Alpha
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 30 Sep 2026.
Common questions
What is the difference between OpenAI o3 and Quasar Alpha?
OpenAI o3 is developed by OpenAI while Quasar Alpha is developed by OpenRouter. You can compare their actual outputs across 6 challenges on Rival to see how they differ in practice.
Which is better, OpenAI o3 or Quasar Alpha?
It depends on your use case. OpenAI o3 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 OpenAI o3 and Quasar Alpha on Rival?
This page shows a side-by-side comparison of OpenAI o3 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
- OpenAI o3 vs GPT-6.1 SolLanded Sep 2026
- Quasar Alpha vs Claude Sonnet 5.5Landed Sep 2026
- OpenAI o3 vs Solar Mini 4Landed Sep 2026
- Quasar Alpha vs Qwen3.8 Max PrimeLanded Sep 2026
- OpenAI o3 vs GLM 5.3 PrimeLanded Sep 2026
- Quasar Alpha vs Qwen3.8 Omni FlashLanded Sep 2026
- OpenAI o3 vs Command A+Landed Sep 2026
- Quasar Alpha vs Claude Opus 5.5Landed Sep 2026
Same lab, same size, long tail
- OpenAI o3 vs OpenAI o4-miniVersion compare
- OpenAI o3 vs GPT-6 Luna ProSame lab
- Quasar Alpha vs Ox AlphaSame lab
- Quasar Alpha vs OpenRouter Fusion · Budget (Jun 2026)Same lab
- Quasar Alpha vs Ring 2.6 1TNew provider
- OpenAI o3 vs Riverflow V2 FastNew provider
- Quasar Alpha vs Seed 2.0 CodeSame size
- Quasar Alpha vs Seed 2.0 LiteNew provider
