← ChatGPT & Codex changelog

ChatGPT — June 12, 2026

Significant updates to memory controls are now available, including the ability to delete specific memories, fully disable memory, and refine your memory summary through direct text editing or highlighting. A new Temporary Chat option provides conversations without memory use or creation. Furthermore, the GPT-5.2 model suite, including Instant, Thinking, and Pro versions, has been retired as previously announced. All past GPT-5.2 conversations will automatically continue on their corresponding GPT-5.5 models.

Added

  • You can now delete the memories shown on your memory summary page and turn memory off by selecting “Delete and turn off memory” from the three-dot menu. This does not delete your past chats. If you turn memory back on later, ChatGPT may create new memories from chats that remain in your chat history. This control is available to all ChatGPT users on the web and rolling out on mobile soon. To make changes to your memory summary, you can:
  • If you don’t want information from a chat to be used to personalize responses, you can turn off memory or use Temporary Chat. Temporary Chats don’t use existing memories or create new memories. Memory updates, including memory summary, are still rolling out across ChatGPT plans and countries. You’ll be notified in ChatGPT when memory updates are available to you.

Changed

  • Retiring GPT-5.2 models
  • As of June 12, 2026, GPT-5.2 models are no longer available in ChatGPT. This applies to GPT-5.2 Instant, GPT-5.2 Thinking, and GPT-5.2 Pro. Existing conversations that used GPT-5.2 will automatically continue on the corresponding GPT-5.5 model. GPT-5.5 models remain available in ChatGPT. This retirement was previously announced with the release of GPT-5.3 Instant. Models will generally remain available in ChatGPT for 90 days after a successor is released.
  • Additional controls for memory summary
  • Type what you want changed into the text box at the bottom of the memory summary, and it will update accordingly.
  • Highlight any text in the memory summary to make a specific correction.