How to use GPT-6 Astra when it rolls out to you

OpenAI launched GPT-6 Astra on September 3, restricting access to $100 and $200 Pro, Business, and Enterprise plans; users must select “GPT-6 Pro” in the model picker or choose Astra in ChatGPT Work or Codex. Astra depletes token allowances faster than GPT-5.6, limiting Plus users to about five-45 messages per five-hour window, $100 Pro users to 25-225 messages, and $200 tier users to 100-900 messages. API rates are $10 per million input tokens and $50 per million output tokens, with higher fees for large volumes.