# OpenAI's Decisions API bills input tokens only and returns a typed answer in about 150 milliseconds

The endpoint charges $0.10 per million input tokens with no output or cache charges, and OpenAI says it is roughly ten times faster than routing the same decision through the Responses API.

- Published: 2026-10-26T06:26:37.653Z
- Canonical: https://polylog.news/ai/2026-10-26/openai-s-decisions-api-bills-input-tokens-only-and-returns-a
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Polylog editors](https://polylog.news), [Unite.ai](https://unite.ai/openai-releases-decisions-api-in-public-beta-powered-by-gpt-6-luna), [ProPakistani](https://propakistani.pk/2026/10/07/openai-launches-decisions-api-with-up-to-10x-faster-responses/), [LLM Reference](https://www.llmreference.com/model/gpt-6-luna-decisions), [InfoQ](https://www.infoq.com/news/2026/10/openai-devday-2026/)

OpenAI released the Decisions API in public beta on October 6, Unite.ai reported. The endpoint takes a developer-written question, a finite list of permitted answers, and a context that can be text or an image, then returns one of those ans…

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