Source-backed announcement / revision 1

OpenAI Decisions API is generally available with gpt-6-luna

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ChatGPTProduct changeConfirmed

OpenAI says the Decisions API (v1/decisions) is now generally available with gpt-6-luna.

Each request now supports up to 400 questions, increased from 200 in public beta.

Who can use it: OpenAI API developers, with gpt-6-luna.
When: Generally available October 22, 2026. The source gives a date, not an exact time.

Read the official announcement for access details. Availability can depend on your plan, region or workplace settings.