OpenAI's ChatGPT web app shows strong evidence of a new GPT-5 model family, including 'GPT

EXHIBIT 845 · FLASH

Aug 19, 2026 21:13 UTC web app https://chatgpt.com

OpenAI's ChatGPT web app shows strong evidence of a new GPT-5 model family, including 'GPT-5', 'GPT-5-pro', and 'GPT-5-thinking', alongside several new GPT-4o variants like 'gpt-4o-mini' and 'gpt-4o-gdrive'. Numerous internal feature flags and new API endpoints also suggest ongoing development in model access, internal tooling, and collaboration features.

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looks like openai is heavily baking in gpt-5.x references into their chatgpt frontend. spotting 'gpt-5', 'gpt-5-pro', and 'gpt-5-thinking' in recent bundles. could be close!

new chatgpt frontend deploy shows a bunch of gpt-4o variants like 'gpt-4o-mini' and 'gpt-4o-gdrive'. also, keep an eye out for 'gpt-5' family mentions. big model updates seem to be brewing.

⚠️ FROM WEB-APP BUNDLE — may include vendored-dependency strings, verify before posting. ChatGPT web app (https://chatgpt.com) deployed new frontend code [562e2271be2c228f -> 717d9063ed943e27]: +52803 strings, -2335 strings, 306 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:eYt,formattedTime:a}}):(0,VH.jsx)($,{id:`TextMessageDisplay.gptUsageCapExceededCustomFeature`,defaultMessage:`You [feature_flag] (132) + ,"data-internal-model-search": + ,action:D,actionMessageDescriptor:XR.focusPromptTextarea,group:zf.Internal,bindings:[{binding:[F_.Shift,F_.Escape]}]},{key: + ,e[e.INTERNAL=1]= + ,group:Tue.Internal,bindings:[{binding:[du.Shift,du.ArrowDown]}],actionMessageDescriptor:Od({id: + ,group:Tue.Internal,bindings:[{binding:[du.Shift,du.ArrowUp]}],actionMessageDescriptor:Od({id: + ,onChange:e=>{f(e.currentTarget.value)},placeholder:u.formatMessage(h4.internalModelsPlaceholder),selectAllOnFocus:!1,value:d}),(0,m4.jsx)( + ,void 0,{surface:e,account_scope:t,is_enabled:String(n)}),K.logStructuredEvent( + /cdn/assets/contentful-dynamic-feature-page-iddvnqz9.js + /cdn/assets/contentful-feature-page-lfcmgmfu.js + /cdn/assets/internal-render-conversation-mv6rzmxb.js + /cdn/assets/internal-render-conversation_.queued-cbkcbksq.js + /cdn/assets/internal.widget-studio.open-conversation-imoe7dyk.js + 3VyEPC5dTP_model_instruction