Gemini 3 Pro PreviewvsGPT-6 Astra Pro
GPT-6 Astra Pro is the newer model, released after Gemini 3 Pro Preview.
| Spec | Gemini 3 Pro Preview | GPT-6 Astra Pro |
|---|---|---|
| Input price | — | $10/M tokens |
| Output price | — | $50/M tokens |
| Context window | — | 1.1M tokens |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | Nov 2025 | Sep 2026 |
Our Verdict
Gemini 3 Pro Preview
GPT-6 Astra Pro
Not enough votes to call it. On the specs, nothing separates them.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Gemini 3 Pro Preview
Input
—
Output
—
GPT-6 Astra Pro
Input
$10.00
Output
$50.00
Where to run it
2 hosts
Gemini 3 Pro Preview
No hosts listed on OpenRouter.
GPT-6 Astra Pro2 hosts
Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.
Research
What we learned reading every model
FAQ
Common questions
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