OpenAI fully opens its decision API, based on GPT-6 Luna, at $0.1 per million input tokens
OpenAI announced the full opening of the Decisions API, which is built on GPT-6 Luna and is aimed at questions with bounded answers, helping applications and agents make near-real-time decisions based on text, images, and structured inputs, with response speeds up to 10 times faster than calling GPT-6 Luna through the Responses API. On pricing, input is charged at $0.1 per million tokens, cached input hits are charged at $0.01 per million tokens, and billing is based only on input tokens, with output tokens free. Since the public beta, native GPT-Live integration, Prompt caching, and inference data residency support in the United States and the European Union have been added, and up to 400 questions can be submitted per request.
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The original text gives the pricing, latency improvements, and input limit changes of the decision API, so readers can use this to judge which near-real-time decision scenarios it suits.
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OpenAI Announces Full Public Availability of Decisions API: Based on GPT‑6 Luna, $0.1 per Million Input Tokens
2026-10-23 07:48 IT Home - Qincang (Intern)
IT Home, October 23 news: On October 22 local time, OpenAI announced the full public availability of the Decisions API.
According to the introduction, the API is built on GPT‑6 Luna, focusing Luna's model intelligence on questions with bounded answers, helping applications and agents make near-real-time decisions based on text, images, and structured inputs — its response speed is up to 10 times faster than calling GPT‑6 Luna through the Responses API.
In terms of pricing, the Decisions API charges $0.1 per million input tokens (IT Home note: approximately 0.67 yuan RMB at the current exchange rate), and $0.01 per million cached input tokens (approximately 0.067 yuan RMB at the current exchange rate). The API is billed only on input tokens; output tokens are free. Across OpenAI, teams are applying the Decisions API to product and business workflows.
OpenAI said that since the public beta, the feature has added native GPT‑Live integration, Prompt caching for reused context, and inference data residency support in the United States and the European Union.
In addition, developers can now pass in native JSON input, include images in question instructions, and submit up to 400 questions in a single request (twice the previous limit). OpenAI said it has continuously optimized latency performance, including expanding service capacity in multiple regions in Asia.