diff --git a/index.html b/index.html
index 0c282db..7c3a4a3 100644
--- a/index.html
+++ b/index.html
@@ -81,7 +81,7 @@
       <form id="settingsForm" class="text-sm">
         <div class="border-b flex text-xs font-medium"><button type="button" id="tabModel" class="flex-1 py-2 px-3 text-center border-b-2 border-black">Model & Sampling</button><button type="button" id="tabPrompt" class="flex-1 py-2 px-3 text-center border-b-2 border-transparent hover:border-gray-300">System Prompt</button><button type="button" id="tabScript" class="flex-1 py-2 px-3 text-center border-b-2 border-transparent hover:border-gray-300">HTML</button></div>
         <div id="panelModel" class="p-4 space-y-4">
-          <div class="grid grid-cols-2 gap-3"><div><label class="block text-gray-700 font-medium mb-1">Model name</label><input id="set_model" type="text" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="openai/gpt-5"/><p class="mt-1 text-xs text-gray-500">Provider specific model name.</p></div><div><label class="block text-gray-700 font-medium mb-1">Reasoning Effort</label><select id="set_reasoning_effort" class="w-full rounded-xl border border-gray-300 px-3 py-2"><option value="default">Omitted</option><option value="low">Low</option><option value="medium">Medium</option><option value="high">High</option></select><p class="mt-1 text-xs text-gray-500">If supported by the model.</p></div></div>
+          <div class="grid grid-cols-2 gap-3"><div><label class="block text-gray-700 font-medium mb-1">Model name</label><input id="set_model" type="text" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="google/gemini-2.5-pro"/><p class="mt-1 text-xs text-gray-500">Provider specific model name.</p></div><div><label class="block text-gray-700 font-medium mb-1">Reasoning Effort</label><select id="set_reasoning_effort" class="w-full rounded-xl border border-gray-300 px-3 py-2"><option value="default">Omitted</option><option value="low">Low</option><option value="medium">Medium</option><option value="high">High</option></select><p class="mt-1 text-xs text-gray-500">If supported by the model.</p></div></div>
           <div class="grid grid-cols-2 gap-3">
             <div><label class="block text-gray-700 font-medium mb-1">Temperature <span class="text-gray-400">(0–2)</span></label><input id="set_temperature" type="number" min="0" max="2" step="0.1" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="1.0"/><p class="mt-1 text-xs text-gray-500">Variety. Lower = predictable.</p></div>
             <div><label class="block text-gray-700 font-medium mb-1">Top P <span class="text-gray-400">(0–1)</span></label><input id="set_top_p" type="number" min="0" max="1" step="0.01" class="w-full rounded-xl border border-gray-300 px-3 py-2" placeholder="1.0"/><p class="mt-1 text-xs text-gray-500">Nucleus sampling.</p></div>
@@ -154,7 +154,7 @@
 <script src="https://cdn.jsdelivr.net/npm/localforage@1.10.0/dist/localforage.min.js"></script>
 <script>
 document.addEventListener('DOMContentLoaded',()=>{
-const DEFAULT_MODEL='openai/gpt-5-chat',DEFAULT_API_KEY=''
+const DEFAULT_MODEL='google/gemini-2.5-pro',DEFAULT_API_KEY=''
 const el=window.el=Object.fromEntries(['topbar','chat','messages','composer','input','sendBtn','suneBtnTop','suneModal','suneURL','settingsForm','closeSettings','cancelSettings','tabModel','tabPrompt','tabScript','panelModel','panelPrompt','panelScript','set_model','set_temperature','set_top_p','set_top_k','set_frequency_penalty','set_repetition_penalty','set_min_p','set_top_a','set_verbosity','set_reasoning_effort','set_system_prompt','set_hide_composer','deleteSuneBtn','sidebarLeft','sidebarOverlayLeft','sidebarBtnLeft','suneList','newSuneBtn','userMenuBtn','userMenu','accountSettingsOption','sunesImportOption','sunesExportOption','threadsImportOption','threadsExportOption','importInput','sidebarBtnRight','sidebarRight','sidebarOverlayRight','threadList','closeThreads','threadPopover','sunePopover','footer','attachBtn','attachBadge','fileInput','htmlEditor','extensionHtmlEditor','htmlTab_index','htmlTab_extension','suneHtml','accountSettingsModal','accountSettingsForm','closeAccountSettings','cancelAccountSettings','set_master_prompt','set_provider','set_api_key_or','set_api_key_oai','set_api_key_g','set_api_key_cf','set_title_model','copySystemPrompt','pasteSystemPrompt','copyHTML','pasteHTML','accountTabGeneral','accountTabAPI','accountPanelGeneral','accountPanelAPI','set_gh_token','importAccountSettings','exportAccountSettings','importAccountSettingsInput','accountTabUser','accountPanelUser','set_user_name','userAvatarPreview','setUserAvatarBtn','userAvatarInput'].map(id=>[id,$('#'+id)[0]]))
 const icons=()=>window.lucide&&lucide.createIcons()
 const haptic=()=>/android/i.test(navigator.userAgent)&&navigator.vibrate?.(1)