OpenAI Decisions API leaves beta and doubles its question limit
The Decisions API is now generally available with GPT-6 Luna. It supports up to 400 questions per request, plus shared-input caching, images in question instructions and direct structured-data input.
What changed
The Decisions API has moved from public beta to general availability with GPT-6 Luna. Its per-request limit has increased from 200 to 400 questions. Developers can cache shared input for prompt-cache discounts, include images in individual question instructions and pass structured data using input_json.
Why it may matter for your work
Developers could process more questions in a single request when building workflows that turn information into structured answers. Shared-input caching may also reduce costs when many requests reuse the same material.
What it can actually do
Process up to 400 questions per request, cache shared input, accept images in question instructions and accept structured data directly.
Limits to check
Each request supports up to 400 questions. This general-availability announcement specifies GPT-6 Luna; prices are not stated in the entry.
“Each request now supports up to 400 questions, increased from 200 in public beta.”From the linked source page