OpenAI Decisions API access

Where access stands

OpenAI calls the Decisions API a limited preview. Access details, a signup path, and a general-availability date have not been published. "Coming days" is the only phrasing used for a broader release.

What is published: it accepts context, a question, and a finite set of developer-defined answers, and returns an answer plus confidence and probabilities. It is described as running a specialized GPT-6 Luna version.

How to get in

OpenAI has not published a public signup path or waitlist for the preview — access details simply are not documented.

Be careful with third-party write-ups: anything showing SDK calls like client.decisions.create is invented — OpenAI has not published an SDK surface for it.

What you can call today

This site runs an independent decision endpoint that follows the same pattern: a state, typed questions, and an answer with a probability for every option. It serves decisions-1 — the decision model this site runs — and it is callable now.

New visitors get 1 free trial decision, so you can try a real call before adding credits. Each successful call consumes 1 credit; failed calls are not billed.

curl -X POST https://decisions-api.net/api/v1/decisions \
  -H "Authorization: Bearer $DECISIONS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "decisions-1",
    "state": "I was charged twice this morning.",
    "questions": {
      "refund": {
        "type": "noul",
        "instructions": "Is the customer asking for money back?"
      }
    }
  }'

Start today

OpenAI's access is still limited — you can run the same decision flow here now. This site's endpoint takes a state plus 1 to 6 typed questions and returns an answer with a probability for every option. New visitors get 1 free trial decision, no signup needed.

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