OpenAI released GPT-6 Astra on September 3, 2026, framing it as "the world's most intelligent and aligned model" and the product of its largest training run to date, executed on more than 100,000 GPUs at the Stargate site in Texas. It is also the first release where earlier OpenAI models supervised the training of the Astra also becomes the first model to hit the "Critical" cybersecurity threshold under OpenAI's Preparedness Framework, which is why advanced cyber capabilities are being gated behind the Daybreak application-based program and the rollout is intentionally phased. Vellum notes that not every benchmark favors OpenAI: Met

OpenAI announced the phased rollout of GPT-6 Astra on September 3, 2026, with CEO Sam Altman calling it a "new capability level" that has changed his workflows and predicting "a boom of entrepreneurship, of creativity, of economic growth, of scientific discovery." Distribution channels for Astra include ChatGPT Plus, P Companies participating in OpenAI's application-based Daybreak cybersecurity program are first in line for access, because Astra is OpenAI's first model to reach the "Critical" internal cybersecurity threshold disclosed earlier in the week, with those advanced cyber capabilities explicitly limited. CNBC notes that two