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OpenAI launches public beta of Decisions API on GPT-6 Luna

The new API returns typed probabilities and scores about ten times faster than the older Responses API, costing $0.10 per million input tokens.

NoteBy Published by Oossa: 1 min read

OpenAI has opened its Decisions API to the public in beta. The service runs on the GPT-6 Luna model and gives typed probabilities, choices and scores. It is about ten times faster than the previous Responses API. OpenAI bills $0.10 for each million input tokens and does not charge for output.

Why it matters

Developers can get quick, structured decision data at low cost, enabling faster AI‑driven workflows.

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