OpenAI's ChatGPT web app frontend has deployed new code with numerous internal feature fla

EXHIBIT 890 · FLASH

Aug 21, 2026 03:27 UTC web app https://chatgpt.com

OpenAI's ChatGPT web app frontend has deployed new code with numerous internal feature flags, new model IDs like GPT-5 and GPT-4o-mini, and various internal API endpoints.

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looks like openai is testing a bunch of new internal features in the chatgpt web app. seeing mentions of gpt-5, gpt-4o-mini, and some intriguing new feature flags.

a new chatgpt frontend deploy just dropped, and it's got a ton of internal references. seems like openai is experimenting with gpt-5 and new gpt-4o variants behind the scenes.

⚠️ FROM WEB-APP BUNDLE — may include vendored-dependency strings, verify before posting. ChatGPT web app (https://chatgpt.com) deployed new frontend code [47fce85e40599bae -> 33f5c9ebd5eab209]: +54226 strings, -2311 strings, 333 interesting [model_id] (22) + /cdn/assets/gpt-details-gt8i8zk7.css + /cdn/assets/gpt-icon-h9k3y3p1.css + GPT-5 + admin/model-access/gpt-5.6-preview + gpt-4 + gpt-4l + gpt-4o + gpt-4o-gdrive + gpt-4o-gdrive-0212 + gpt-4o-gdrive-0314 + gpt-4o-gdrive-1007-mclick + gpt-4o-gdrive-1124 + gpt-4o-gdrive-1124-citation + gpt-4o-mini-filled + gpt-5 + gpt-5-pro + gpt-5-thinking + gpt-5.6-luna-wm + o3-mini-high-in-context-upsell-plus + o4-mini + routes/admin_.model-access.gpt-5[.]6-preview + ve reached the current usage cap for GPT-4. You can continue with the default model now, or try again {formattedTime}. <link>Learn more</link>`,values:{link:QXt,formattedTime:a}}):(0,WH.jsx)($,{id:`TextMessageDisplay.gptUsageCapExceededCustomFeature`,defaultMessage:`You [feature_flag] (133) + ,"data-internal-model-search": + ,action:E,actionMessageDescriptor:rz.focusPromptTextarea,group:Vf.Internal,bindings:[{binding:[H_.Shift,H_.Escape]}]},{key: + ,e[e.INTERNAL=1]= + ,group:Vue.Internal,bindings:[{binding:[su.Shift,su.ArrowDown]}],actionMessageDescriptor:Dd({id: + ,group:Vue.Internal,bindings:[{binding:[su.Shift,su.ArrowUp]}],actionMessageDescriptor:Dd({id: + ,onChange:e=>{f(e.currentTarget.value)},placeholder:u.formatMessage(_4.internalModelsPlaceholder),selectAllOnFocus:!1,value:d}),(0,g4.jsx)( + ,void 0,{surface:e,account_scope:t,is_enabled:String(n)}),J.logStructuredEvent( + /cdn/assets/contentful-dynamic-feature-page-ckkllgew.js + /cdn/assets/contentful-feature-page-frhs8wpr.js + /cdn/assets/internal-render-conversation-m5irnjud.js + /cdn/assets/internal-render-conversation_.queued-w08ukfpw.js + /cdn/assets/internal.widget-studio.open-conversation-imoe7dyk.js + 3VyEPC5dTP_model_instruction