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OpenAI launches GPT-6 Astra, the first of its sixth generation, at $10 per million tokens

OpenAI presented GPT-6 Astra on September 3, which it describes as its most intelligent and best-aligned model.
September 3, 2026
Curated High
Status today

The family quickly grew: OpenAI added GPT-6 Sol and GPT-6 Luna on September 22, and GPT-6.1 Sol on September 29.

What it says

  • OpenAI claims that Astra is state of the art in computer use, browsing, software engineering, cybersecurity, science, and professional work.
  • Results reported by the company: 98% on FrontierMath Tier 4, 99.9% on ARC-AGI-3, and 100% on ExploitBench, a vulnerability exploitation test.
  • Staggered rollout: first to a limited group of organizations and, in the following days, to ChatGPT Plus, Pro, Business, and Enterprise, the API, Microsoft Azure, and AWS Bedrock. In enterprises it comes disabled by default until the administrator enables it.
  • In the API it costs $10 per million input tokens and $50 per million output tokens, and it supports zero data retention for customers who meet the requirements.
  • OpenAI adds oversight that can pause a task and ask for review before continuing; in the API, the task is halted.

How it has evolved

Thread: The race of frontier models. Releases of the most capable AI models and what they change in capability, price, and safeguards for those who use them.

Introducing GPT-6.1 Sol (OpenAI, September 29, 2026): openai.com

The Tech Guardian summarizes and comments in its own words on third-party publications. The full information belongs to the original source, which we recommend you read.

Our take

A model that passes all vulnerability-exploitation tests also serves whoever attacks: expect the time between patch and attack to keep shrinking. For your company, that it comes switched off by default is an opportunity: decide beforehand who uses it, with what data and for which tasks, instead of finding out on the invoice.

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