OpenAI Announces GPT-6 Astra API Availability

Sam Altman posted that GPT-6 Astra is now available to all Pro, Enterprise, and Business Premium users in Work/Codex and is available in the API, with rollout to Plus and Business users starting next. Steven Heidel, an engineer on OpenAI's API team, stated that GPT-6 Astra is now live in the API. Jason Liu posted that Astra is now out for everyone. A reply from Rohan Paul included a screenshot of a ChatGPT interface showing model options labeled GPT-5.6 Sol and GPT-5.5.