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ChatGPT Web

OpenAI · Web app

ChatGPT Web

June 26, 2026 at 11:01 PM UTC

Release notes update: The official ChatGPT retirement notice was edited to move GPT-4.5’s sunset date from June 27 to June 26, 2026 (o3 remains August 26); no other model or feature changes were announced.

Changelog

Release notes update: The official ChatGPT retirement notice was edited to move GPT-4.5’s sunset date from June 27 to June 26, 2026 (o3 remains August 26); no other model or feature changes were announced.

Flag changes

  • Language-learning surface
    Removed enable_language_learning_block_v2 — previously gated the v2 language-learning block UI.

  • Active experiment
    Added dyn-config 605519219 — gates an unnamed experiment rollout.

Older release← Jun 26, 21:01 UTCNewer release→ Jun 27, 01:00 UTC
All ChatGPT Web releases →