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OpenAI puts Decisions API in public beta, gpt-6-luna input at $0.10 per million tokens

OpenAI's changelog dates the Decisions API to 6 October. It turns text and images into typed answers, about 10 times faster than the Responses API, OpenAI says.

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Check our sources · 8 facts from 2 sources

OpenAI released the Decisions API in beta on 6 October 2026, according to its API changelog. Its documentation now calls it a public beta and says OpenAI expects general availability in the coming weeks.

The API evaluates text, images or both and returns typed answers: the probability that a condition is true, a choice from a fixed set, or a score against a rubric. OpenAI says it returns these about 10 times faster than the Responses API.

Only gpt-6-luna is supported, through a dedicated POST /v1/decisions endpoint. Input costs $0.10 per 1M tokens, and there are no cache-read, cache-write or output-token charges. Regional processing premiums and long-context input pricing multipliers apply.

OpenAI says the API supports Zero Data Retention and HIPAA use for eligible customers, with data residency and regional processing in the United States and in Europe (EEA and Switzerland).

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1 ChangelogOpenAI (API docs) · 1 fact Open the source archived copy

  1. OpenAI's API changelog lists, under 6 October, a feature entry for gpt-6-luna and v1/decisions: "Released the Decisions API in beta with gpt-6-luna. Turn text and images into typed answers 10x faster than the Responses API."

    cite
2 Decisions APIOpenAI (API docs) · 7 facts Open the source archived copy

  1. OpenAI's Decisions guide says: "The Decisions API is in public beta, and we expect to GA in the coming weeks."

    The Decisions API is in public beta, and we expect to GA in the coming weeks.
    cite

  2. OpenAI's Decisions guide says the API "evaluates text, images, or both and returns typed answers about 10x faster than the Responses API".

    The Decisions API evaluates text, images, or both and returns typed answers about 10x faster than the Responses API.
    cite

  3. OpenAI's Decisions guide says you can get "the probability that a condition is true, a choice from a fixed set, or a score against a rubric".

    Get the probability that a condition is true, a choice from a fixed set, or a score against a rubric.
    cite

  4. OpenAI's Decisions guide says: "gpt-6-luna is the only model currently available. Use the dedicated POST /v1/decisions endpoint."

    gpt-6-luna is the only model currently available. Use the dedicated POST /v1/decisions endpoint.
    cite

  5. OpenAI's Decisions guide says: "With gpt-6-luna, input costs $0.10 per 1M tokens. You pay only for input tokens: there are no cache-read, cache-write, or output-token charges."

    With gpt-6-luna, input costs $0.10 per 1M tokens. You pay only for input tokens: there are no cache-read, cache-write, or output-token charges.
    cite

  6. OpenAI's Decisions guide says: "Regional processing premiums and long-context input pricing multipliers apply."

    Regional processing premiums and long-context input pricing multipliers apply.
    cite

  7. OpenAI's Decisions guide says the API "supports Zero Data Retention (ZDR) and HIPAA use for eligible customers" and that data residency and regional processing are supported in the United States and Europe (EEA + Switzerland).

    The Decisions API supports Zero Data Retention (ZDR) and HIPAA use for eligible customers. Data residency and regional processing are supported in the United States and Europe (EEA + Switzerland).
    cite

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