Teams with hard multi-step work get OpenAI's strongest model, at a steep $50 per million output tokens; Enterprise admins must switch it on.
Kenning's take
What it does
GPT-6 Astra is OpenAI's most capable model, aimed at reasoning, coding, computer use, research and document creation. It launched on 3 September 2026 to a limited set of organisations, with paid ChatGPT plans and the API following, and Enterprise admins must switch it on. In the API it requires the Responses API for tool calling.
- 1.05M-token context window
- Computer use across apps and websites
- Reasoning effort from low to max
- Ultrafast mode in the API
- Misalignment monitoring on agent runs
Who it suits. Teams and developers who want the strongest OpenAI model for hard, multi-step work.
Key facts
- Category
- AI models
- Part of
- ChatGPT
- Made by
- OpenAI
- Based in
- United States
- Released
- 3 September 2026
- How to get it
- Paid ChatGPT plans (rollout varies by plan) and OpenAI API (model gpt-6-astra); off by default for Enterprise
- Works on
- ChatGPT, Codex, API
- In the UK
- Yes
- API price
- $10 per million input tokens, $50 per million output
Reviews and write-ups
FAQ
When was GPT-6 Astra released?
OpenAI released GPT-6 Astra on 3 September 2026.
How much does GPT-6 Astra cost?
$10 per million input tokens and $50 per million output tokens in the API.
Can free ChatGPT users use GPT-6 Astra?
Reports describe the rollout as limited to paid ChatGPT plans.
Facts from the maker's own pages and the sources listed. Checked 2026-10-11.
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