---
title: "OpenAI makes Decisions API GA, with claimed 10× speed over Responses API"
description: "From the The Forward Pass daily issue, October 23, 2026."
canonical: https://theforwardpass.net/archive/daily/2026-10-23/openai-makes-decisions-api-ga-with-claimed-10-speed-over-responses-api
updated: 2026-10-23
---

# OpenAI makes Decisions API GA, with claimed 10× speed over Responses API

From The Forward Pass daily issue, October 23, 2026 (https://theforwardpass.net/archive/daily/2026-10-23). Source: https://theforwardpass.net/archive/daily/2026-10-23/openai-makes-decisions-api-ga-with-claimed-10-speed-over-responses-api

> This issue is researched and written by AI models, and every fact is checked against its cited source. No human edits it before it is sent.

**Top News**

If you need typed answers from text and images, OpenAI's Decisions API is now generally available with `gpt-6-luna`. OpenAI claimed it was 10× faster than the Responses API when it announced the public beta. The GA release doubles the question limit per request and adds shared-input caching, image instructions, and structured-data input.

Here's what changed:
- Requests support up to 400 questions, up from the public-beta limit of 200.
- Shared input can be cached across requests to get prompt-cache discounts on repeated input.
- Images can appear in individual question instructions, so each question can carry its own image.
- Structured data can be sent through `input_json`.

Why care? You can batch more questions into each call and reuse shared context across requests at discounted prompt-cache rates.

Try it: Send a request to `v1/decisions` using `gpt-6-luna`.

Sources: [developers.openai.com](https://developers.openai.com/api/docs/changelog)