GPT-4.5 retirement (June 26, 2026)
GPT-4.5 is no longer available in ChatGPT (including custom GPTs). Existing conversations continue on GPT-5.5. The change was previously announced and does not affect the API.
Location-widget experiments (3 flags added)
enable_ask_user_location_widget_cta_button_v2: gates an updated CTA button on the location prompt widget.enable_ask_user_location_widget_followup_suggestions_only: gates a mode that shows only follow-up suggestions after location is requested.enable_ask_user_location_widget_v2_copy: gates revised wording/copy for the v2 location widget.
Structured-input experiment (1 flag added)
msf_structured_input_enabled: gates structured/multi-field input support in the chat composer.
Two Statsig gates were removed and one new Statsig layer was added (hashed identifiers only).