Fastcompany iconFastcompanySep 3, 2026 ~1 min source read

OpenAI unleashes Astra, its most capable and controversial model yet

"Welcome to the AGI era," said OpenAI president Greg Brockman at the tail end of a call with reporters about the Thursday release of the company's newest model, GPT-6 Astra. OpenAI VP of research Aidan Clark said more than 100,000 GPUs were used to train it.

OpenAI unleashes Astra, its most capable and controversial model yet

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"Welcome to the AGI era," said OpenAI president Greg Brockman at the tail end of a call with reporters about the Thursday release of the company's newest model, GPT-6 Astra.

OpenAI said Astra outscored all other frontier models in benchmark tests measuring computer use, browser use, software engineering, cybersecurity, science, and professional work.

Astra is rolling out Thursday to a limited set of organizations and will become available over the coming days to all ChatGPT Plus, Pro, Business, and Enterprise users, as well as through the OpenAI API and...

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The useful part

"Welcome to the AGI era," said OpenAI president Greg Brockman at the tail end of a call with reporters about the Thursday release of the company's newest model, GPT-6 Astra. OpenAI VP of research Aidan Clark said more than 100,000 GPUs were used to train it. OpenAI said Astra outscored all other frontier models in benchmark tests measuring computer use, browser use, software engineering, cybersecurity, science, and professional work.

How it works

  • It notched perfect or near-perfect scores on some especially difficult evaluations.
  • Astra scored 99.9% on ARC-AGI-3, a game-style reasoning test designed to make advance preparation of the model almost impossible.
  • Astra is rolling out Thursday to a limited set of organizations and will become available over the coming days to all ChatGPT Plus, Pro, Business, and Enterprise users, as well as through the OpenAI API and...
  • Enterprise administrators will have to enable Astra for their workspaces, with access turned off by default at launch.
  • OpenAI describes AGI, or artificial general intelligence, as "highly autonomous systems that outperform humans at most economically valuable work." The company calls Astra its most intelligent and safest...

What to take from it

"When we look back and ask when AGI arrived, we'll see that it's about this time and it's about this model," Brockman said.

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