Modelpeers

GPT-5-Codex, GPT-5.1-Codex, GPT-5.2-Codex

6 models from OpenAI

Retired

Older Codex, chat-latest, search and deep research models shut down

Access to the April-announced batch, including gpt-5-codex, gpt-5.1-codex variants, gpt-5.2-codex, gpt-5-chat-latest, o3-deep-research and computer-use-preview, was shut down on July 23, 2026.

Who is affected:
Apps still calling these models now get errors.
Action needed:
Switch to gpt-5.6-sol or gpt-5.6-terra.

Source

"Access to these models was shut down on July 23, 2026."

OpenAI API deprecations page

Published

Open the sourcedevelopers.openai.com

Modelpeers tracks changes to AI agents and models, each from its source. Follow GPT-5-Codex to get a weekly email when it changes.