← ChatGPT & Codex changelog

OpenAI API — October, 2026

Significant platform updates include the beta release of the Decisions API, powered by gpt-6-luna, enabling 10x faster text and image processing into typed answers. API usage tiers have been streamlined from five to three — Build, Launch, and Grow — with automatic organization upgrades based on total credit purchases. Additionally, an in-product flow for accepting a Business Associate Agreement and enabling HIPAA compliance support is now available for eligible organizations.

Added

  • Released the Decisions API in beta with gpt-6-luna. Turn text and images into typed answers 10x faster than the Responses API.
  • Added an in-product flow for HIPAA compliance support in API Organization settings > General. Admins of eligible organizations can now accept the standard Business Associate Agreement (BAA) and enable HIPAA compliance support for their organization. See the Help Center for eligibility, covered services, and configuration requirements.

Changed

  • Simplified API usage tiers from five to three: Build, Launch, and Grow. Organizations automatically upgrade as total credit purchases reach tier minimums. See usage tiers for monthly usage limits and how to view rate limits for each model.