OpenAI API changelog

Every change to OpenAI API that Modelpeers has recorded, newest first, each with the source it came from. The record starts May 12, 2026.

All (10)Releases (2)Retiring (2)Breaking changes (2)Prices/limits (4)

October 2026

OpenAI API, OpenAI Codex and ChatGPT Work

3 products from OpenAI

Now available5d

OpenAI API, Codex and ChatGPT Work purchasable through Oracle Marketplace

Oracle customers in the U.S. can buy access to the OpenAI API, Codex and ChatGPT Work through Oracle Marketplace. Purchases use existing procurement processes and eligible Oracle Universal Credits.

OpenAI API and GPT-6 Luna

2 products from OpenAI

Now available1w

Decisions API generally available with GPT-6 Luna

The Decisions API, which returns typed answers from text and images with GPT-6 Luna, is now generally available after a beta that began October 6. Each request now supports up to 400 questions, up from 200 in the public beta.

Before

200 questions per request

After

400 questions per request

Who is affected:: Developers using or evaluating the Decisions API.
What to do:: Review the changes since the public beta before moving beta integrations to production.

11 incidents are listed on the OpenAI API page. Get this changelog in a feed reader with the RSS feed.