Model Release Notes

Retiring GPT-4o and other ChatGPT models

GPT-4o and additional models were deprecated in ChatGPT on February 13, 2026. These models will continue to be available in the API.

GPT-4o and additional models were deprecated in ChatGPT

ChatGPT — Release Notes

A changelog of the latest updates and release notes for ChatGPT

A changelog of the latest updates and release notes for ChatGPT

ChatGPT Business - Release Notes

A changelog of the latest updates for ChatGPT Business plan

A changelog of the latest updates for ChatGPT Business plan

ChatGPT Enterprise & Edu - Release Notes

ChatGPT Enterprise and Edu - Models & Limits

Understand which models are best suited for your tasks.

Understand which models are best suited for your tasks.

Sharing feedback, evaluation and fine-tuning data, and API inputs and outputs with OpenAI

Controlling the length of OpenAI model responses

Learn how to set output limits for OpenAI models using token settings, clear prompts, examples, and stop sequences.

Learn how to set output limits for OpenAI models using token settings, clear prompts, examples, and stop sequences.

ChatGPT Rate Card (Business, Enterprise/Edu)

Flexible pricing rate card for the Business and Enterprise/Edu plans

Flexible pricing rate card for the Business and Enterprise/Edu plans

GPT-Rosalind for life sciences research

GPT-Rosalind helps eligible enterprise research teams with early discovery workflows across ChatGPT Enterprise, Codex, and the API.

GPT-Rosalind helps eligible enterprise research teams with early

Codex rate card

Learn how Codex credit rates work across Plus, Pro, Business, Enterprise, Edu, Health, and Gov plans.

Learn how Codex credit rates work across Plus, Pro, Business, Enterprise, Edu, Health, and Gov plans.