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ChatGPT Web

OpenAI · Web app

ChatGPT Web

June 18, 2026 at 8:52 PM UTC

chatgpt.com flag changelog (20260618-185207Z → 20260618-205205Z)

Changelog

chatgpt.com flag changelog (20260618-185207Z → 20260618-205205Z)

Banners, upsells & cookie notices

  • banner_enabled – gates a new top-level banner surface.
  • mweb_cookie_banner_new_text_enabled – shows updated cookie banner copy on mobile web.
  • hide_upsells_when_ad_query_params_present – suppresses upsell UI when ad params are detected.

Model / inference prefetch

  • enable_fast_model_prefetch – enables the fast-model prefetch path.
  • fast_model_prefetch_guaranteed_prefetch_budget_seconds – sets guaranteed prefetch time budget.
  • fast_model_prefetch_use_sheep_backend – routes prefetch traffic through the sheep backend.
  • (removed prefetch-models) – old prefetch flag retired.

Sidebar & fact-table UI

  • enable-sidebar-fact-table – shows fact table inside the sidebar.
  • (removed sidebar-default-close) – sidebar no longer defaults to closed state.

Credits, membership & trusted access

  • default_average_monthly_credits_per_member – sets baseline monthly credit allocation.
  • bio_trusted_access_link / cyber_trusted_access_link – expose trusted-access entry points for bio/cyber verticals.
  • new route redeem-credits/:claimCode – supports credit-claim flow.

Model-picker (Wingman)

  • wingman_model_picker_alternative_options – supplies alternate model choices in the picker.
  • wingman_model_picker_default_display_name – overrides the default model label shown.

Misc. experiments & mobile routing

  • region_options – controls available region selector values.
  • redirect_jiohotstar_android_mweb_to_play_store – forces JioHotstar Android mweb traffic to Play Store.
  • dismiss_cooldown_days, impression_cooldown_hours, pending_delay_ms – various cooldown / delay tunables for prompts and impressions.

Other infra

  • New routes: discovery-hub, tpp-slack-app-install.
  • Removed backend endpoints: /api/v2/{interaction,monitor,performance,performance_interaction,pixel}.
  • 4 new Statsig gates, 3 new dynamic configs, 1 new layer added; 1 layer removed.
Older release← Jun 18, 18:52 UTCNewer release→ Jun 18, 22:52 UTC
All ChatGPT Web releases →

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