Model by OpenAI

GPT-6 Astra Pro

GPT-6 Astra Pro is GPT-6 Astra served in pro reasoning mode.

Checked 2026-11-05

GPT-6 Astra Pro is GPT-6 Astra served in pro reasoning mode. OpenRouter calls it the same underlying model with reasoning.mode set to pro for higher-quality answers on complex tasks. Astra is the flagship of the GPT-6 series on that site. This pro listing appeared on 4 September 2026, the earliest of the batch. The context window is 1,050,000 tokens. It takes text, images and files and returns text only. On 5 November 2026 the price is $10 per million input tokens and $50 per million output, the highest in this batch and five times the Sol Pro rate. The cost note on the listing adds that pro mode spends far more tokens, so a single hard question can get expensive quickly. It is closed, with no weights published. Use it when a wrong answer costs more than the bill, such as a security review or a hard migration, and try cheaper tiers first. You reach it through the OpenAI API or OpenRouter. Figures come from OpenRouter's public model list and model page. We have not run it.

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Questions

What is the context window of GPT-6 Astra Pro?

1,050,000 tokens, with up to 128,000 tokens of output.

How much does GPT-6 Astra Pro cost?

$10 per million input tokens and $50 per million output tokens, checked 31 October 2026.

Can I run GPT-6 Astra Pro on my own hardware?

No. The weights are not published, so you use it through the maker's API or a hosting provider.

Who makes GPT-6 Astra Pro?

OpenAI makes it, and released it on 4 September 2026.

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