GPT-6 Astra Pro is the same underlying model as GPT-6 Astra(opens in new tab), served with reasoning.mode set to pro for higher-quality responses on complex tasks.
Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode(opens in new tab)
Modalities
In / Out Price
$10 / $50per 1M
Context
1M
Released
Sep 4, 2026