diff --git a/backend/internal/api/handlers.go b/backend/internal/api/handlers.go
index de8cf50..ddbd9bf 100644
--- a/backend/internal/api/handlers.go
+++ b/backend/internal/api/handlers.go
@@ -345,7 +345,7 @@ func (a *API) PostChat(w http.ResponseWriter, r *http.Request) {
 	}
 
 	// Start Message
-	chunk, err := a.startMessageGeneration(chat.ID, genReq.Model, genReq.Prompt, genReq.Images)
+	chunk, err := a.startMessageGeneration(chat.ID, genReq.Model, genReq.Prompt, genReq.Images, genReq.EnableThinking())
 	if err != nil {
 		log.WithError(err).WithField("chat_id", chat.ID).Error("failed to start message generation")
 		http.Error(w, "Failed to start message generation", http.StatusInternalServerError)
@@ -539,7 +539,7 @@ func (a *API) PostChatMessage(w http.ResponseWriter, r *http.Request) {
 	}
 
 	// Start Message
-	chunk, err := a.startMessageGeneration(chatID, genReq.Model, genReq.Prompt, genReq.Images)
+	chunk, err := a.startMessageGeneration(chatID, genReq.Model, genReq.Prompt, genReq.Images, genReq.EnableThinking())
 	if err != nil {
 		log.WithError(err).WithField("chat_id", chatID).Error("failed to start message generation")
 		if errors.Is(err, errGenerationActive) {
@@ -572,7 +572,7 @@ func (a *API) getClient() (*client.Client, error) {
 	return a.client, nil
 }
 
-func (a *API) startMessageGeneration(chatID uuid.UUID, chatModel, userMessage string, images []string) (*MessageChunk, error) {
+func (a *API) startMessageGeneration(chatID uuid.UUID, chatModel, userMessage string, images []string, enableThinking bool) (*MessageChunk, error) {
 	apiClient, err := a.getClient()
 	if err != nil {
 		return nil, fmt.Errorf("failed to get client: %w", err)
@@ -613,7 +613,7 @@ func (a *API) startMessageGeneration(chatID uuid.UUID, chatModel, userMessage st
 		}
 		return nil
 	}, func(gen *generation) {
-		a.runMessageGeneration(apiClient, chat, assistantMsg, chatModel, gen)
+		a.runMessageGeneration(apiClient, chat, assistantMsg, chatModel, enableThinking, gen)
 	}); err != nil {
 		return nil, err
 	}
@@ -621,13 +621,30 @@ func (a *API) startMessageGeneration(chatID uuid.UUID, chatModel, userMessage st
 	return initialChunk, nil
 }
 
-func (a *API) runMessageGeneration(apiClient *client.Client, chat *store.Chat, assistantMsg *store.Message, chatModel string, gen *generation) {
+func (a *API) runMessageGeneration(apiClient *client.Client, chat *store.Chat, assistantMsg *store.Message, chatModel string, enableThinking bool, gen *generation) {
 	// Create Generation Context
 	ctx, cancel := context.WithTimeout(gen.ctx, a.textGenerationTimeout())
 	defer cancel()
 
+	// Generate Title First - Doing this before the main response avoids busting the KV
+	// cache between the user prompt and the assistant reply, and keeps the stream from
+	// staying open past the visible response completing.
+	if chat.Title == "" && len(chat.Messages) > 0 {
+		title, err := apiClient.CreateTitle(ctx, chat.Messages[0].Content, chatModel)
+		if err != nil {
+			a.logger.WithError(err).WithField("chat_id", chat.ID).Error("failed to create chat title")
+		} else {
+			chat.Title = title
+			if err := a.store.SaveChat(chat); err != nil {
+				a.logger.WithError(err).WithField("chat_id", chat.ID).Error("failed to update chat")
+			} else {
+				gen.broadcast(&MessageChunk{Chat: toChatNoMessages(chat)})
+			}
+		}
+	}
+
 	// Send Message
-	if _, err := apiClient.SendMessage(ctx, chat.Messages, chatModel, func(m *client.MessageChunk) error {
+	if _, err := apiClient.SendMessage(ctx, chat.Messages, chatModel, enableThinking, func(m *client.MessageChunk) error {
 		messageChanged := false
 
 		if m.Stats != nil {
@@ -684,17 +701,6 @@ func (a *API) runMessageGeneration(apiClient *client.Client, chat *store.Chat, a
 		return
 	}
 
-	// Summarize & Update Chat Title
-	if chat.Title == "" {
-		var err error
-		chat.Title, err = apiClient.CreateTitle(ctx, chat.Messages[0].Content, chatModel)
-		if err != nil {
-			a.logger.WithError(err).WithField("chat_id", chat.ID).Error("failed to create chat title")
-		} else if err := a.store.SaveChat(chat); err != nil {
-			a.logger.WithError(err).WithField("chat_id", chat.ID).Error("failed to update chat")
-		}
-	}
-
 	// Complete Assistant Message
 	assistantMsg.Status = store.MessageStatusComplete
 	if err := a.store.SaveChatMessage(assistantMsg); err != nil {
diff --git a/backend/internal/api/types.go b/backend/internal/api/types.go
index e481e30..c6403db 100644
--- a/backend/internal/api/types.go
+++ b/backend/internal/api/types.go
@@ -69,9 +69,17 @@ type ImageRecord struct {
 }
 
 type GenerateTextRequest struct {
-	Model  string   `json:"model"`
-	Prompt string   `json:"prompt"`
-	Images []string `json:"images,omitempty"`
+	Model    string   `json:"model"`
+	Prompt   string   `json:"prompt"`
+	Images   []string `json:"images,omitempty"`
+	Thinking *bool    `json:"thinking,omitempty"`
+}
+
+func (r *GenerateTextRequest) EnableThinking() bool {
+	if r.Thinking == nil {
+		return true
+	}
+	return *r.Thinking
 }
 
 func (r *GenerateTextRequest) Validate() error {
diff --git a/backend/internal/client/client.go b/backend/internal/client/client.go
index d4a65eb..4639496 100644
--- a/backend/internal/client/client.go
+++ b/backend/internal/client/client.go
@@ -66,7 +66,7 @@ func (c *Client) EditImage(ctx context.Context, body openai.ImageEditParams) ([]
 	return resp.Data, nil
 }
 
-func (c *Client) SendMessage(ctx context.Context, chatMessages []*store.Message, model string, cb StreamCallback) (string, error) {
+func (c *Client) SendMessage(ctx context.Context, chatMessages []*store.Message, model string, enableThinking bool, cb StreamCallback) (string, error) {
 	// Ensure Callback
 	if cb == nil {
 		cb = func(mc *MessageChunk) error { return nil }
@@ -89,7 +89,8 @@ func (c *Client) SendMessage(ctx context.Context, chatMessages []*store.Message,
 		},
 	}
 	chatReq.SetExtraFields(map[string]any{
-		"timings_per_token": true, // Llama.cpp
+		"timings_per_token":   true, // Llama.cpp
+		"chat_template_kwargs": map[string]any{"enable_thinking": enableThinking},
 	})
 
 	// Perform Request & Allocate Stats
@@ -172,7 +173,7 @@ func (c *Client) CreateTitle(ctx context.Context, userMessage, model string) (st
 	output, err := c.SendMessage(ctx, []*store.Message{{
 		Role:    "user",
 		Content: prompt,
-	}}, model, nil)
+	}}, model, false, nil)
 	if err != nil {
 		return "", fmt.Errorf("failed to sent message: %w", err)
 	}
diff --git a/backend/internal/client/client_test.go b/backend/internal/client/client_test.go
index c666ade..9a5398a 100644
--- a/backend/internal/client/client_test.go
+++ b/backend/internal/client/client_test.go
@@ -32,7 +32,7 @@ func TestSendMessage(t *testing.T) {
 	_, err = client.SendMessage(ctx, []*store.Message{{
 		Role:    "user",
 		Content: "What is 2+2? Think step by step.",
-	}}, model, func(mc *MessageChunk) error {
+	}}, model, true, func(mc *MessageChunk) error {
 		if mc.Thinking != nil {
 			_, err := thinkingBuf.Write([]byte(*mc.Thinking))
 			return err
@@ -118,7 +118,7 @@ func TestSendMessageWithImage(t *testing.T) {
 		Role:    "user",
 		Content: "Describe this image in detail.",
 		Images:  []string{dataURL},
-	}}, model, func(mc *MessageChunk) error {
+	}}, model, true, func(mc *MessageChunk) error {
 		if mc.Message != nil {
 			outputBuf.WriteString(*mc.Message)
 		}
diff --git a/frontend/public/pages/chats.html b/frontend/public/pages/chats.html
index cf54289..00a9875 100644
--- a/frontend/public/pages/chats.html
+++ b/frontend/public/pages/chats.html
@@ -1,7 +1,8 @@
 <div x-data="chatManager()">
   <!-- Chat Content -->
   <div
-    class="h-dvh pt-16 flex flex-col-reverse pb-36 overflow-scroll mx-auto px-4 md:px-6 max-w-6xl"
+    :class="chatListOpen ? 'md:pl-[23rem]' : ''"
+    class="h-dvh pt-16 flex flex-col-reverse pb-36 overflow-scroll mx-auto px-4 md:px-6 max-w-6xl transition-all duration-300 ease-out"
   >
     <template x-for="message in currentChatMessages" :key="message.id">
       <div
@@ -138,56 +139,31 @@
   </div>
 
   <!-- Floating Input and Model Selection -->
-  <div class="fixed bottom-4 w-full flex justify-center px-4 md:px-6">
+  <div
+    :class="chatListOpen ? 'md:pl-[23rem]' : ''"
+    class="fixed bottom-4 w-full flex justify-center px-4 md:px-6 transition-all duration-300 ease-out"
+  >
     <div class="w-full sm:w-[calc(100%-2rem)] max-w-3xl z-10">
-      <div
-        class="flex flex-col gap-3 p-3 bg-primary-50/95 backdrop-blur-sm rounded-2xl shadow-2xl border border-primary-200"
+      <form
+        @submit.prevent="sendMessage"
+        class="flex flex-col gap-2 p-3 bg-primary-50/95 backdrop-blur-sm rounded-2xl shadow-2xl border border-primary-200"
       >
-        <!-- Model Select -->
-        <div class="relative">
-          <select
-            x-model="selectedModel"
-            class="w-full appearance-none px-9 py-3 bg-gradient-to-r from-primary-50 to-primary-300 border border-primary-200 rounded-xl focus:outline-none focus:ring-2 focus:ring-primary-400 text-primary-900 text-sm font-medium cursor-pointer transition-shadow hover:shadow-md"
-          >
-            <option value="">Select Model</option>
-            <template x-for="model in models" :key="model.id">
-              <option
-                :value="model.id"
-                x-text="model.name || model.id"
-              ></option>
-            </template>
-          </select>
-
-          <!-- Computer Icon -->
-          <svg
-            class="absolute left-3 top-1/2 -translate-y-1/2 h-4 w-4 text-primary-400 pointer-events-none"
-            fill="none"
-            viewBox="0 0 24 24"
-            stroke="currentColor"
-          >
-            <path
-              stroke-linecap="round"
-              stroke-linejoin="round"
-              stroke-width="2"
-              d="M9.75 17L9 20l-1 1h8l-1-1-.75-3M3 13h18M5 17h14a2 2 0 002-2V5a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"
-            />
-          </svg>
-
-          <!-- Chevron Icon -->
-          <svg
-            class="absolute right-3 top-1/2 -translate-y-1/2 h-4 w-4 text-primary-400 pointer-events-none transition-colors hover:text-primary-500"
-            fill="none"
-            viewBox="0 0 24 24"
-            stroke="currentColor"
-          >
-            <path
-              stroke-linecap="round"
-              stroke-linejoin="round"
-              stroke-width="2"
-              d="M19 9l-7 7-7-7"
-            />
-          </svg>
-        </div>
+        <!-- Hidden File Input -->
+        <input
+          x-ref="fileInput"
+          type="file"
+          accept="image/png, image/jpeg, image/webp"
+          multiple
+          class="hidden"
+          @change="
+            Array.from($event.target.files).forEach(file => {
+              const reader = new FileReader();
+              reader.onload = (e) => { selectedImages.push(e.target.result); };
+              reader.readAsDataURL(file);
+            });
+            $event.target.value = '';
+          "
+        />
 
         <!-- Image Preview Strip -->
         <div
@@ -198,6 +174,7 @@
             <div class="relative">
               <img :src="img" class="w-20 h-20 object-cover rounded-lg" />
               <button
+                type="button"
                 @click="selectedImages.splice(idx, 1)"
                 class="absolute -top-1 -right-1 w-5 h-5 bg-tertiary-700 text-white rounded-full flex items-center justify-center text-xs hover:bg-tertiary-900"
               >
@@ -207,16 +184,109 @@
           </template>
         </div>
 
-        <!-- Message Form -->
-        <form @submit.prevent="sendMessage" class="flex gap-2 items-end">
-          <!-- Attach Image Button -->
+        <!-- Message Textarea (dominant) -->
+        <textarea
+          x-model="inputMessage"
+          placeholder="Type your message..."
+          rows="2"
+          class="scrollbar-hide w-full px-2 py-1 bg-transparent border-0 focus:outline-none focus:ring-0 text-primary-900 text-sm resize-none overflow-y-auto max-h-60"
+          @keydown.enter="if (!$event.shiftKey) { $event.preventDefault(); sendMessage(); }"
+          @input="$el.style.height = 'auto'; $el.style.height = $el.scrollHeight + 'px'"
+        ></textarea>
+
+        <!-- Bottom Toolbar: model badge + actions -->
+        <div class="flex items-center gap-2">
+          <!-- Model Badge Select -->
+          <div class="relative min-w-0 flex-shrink inline-flex items-center pl-7 pr-6 py-1 bg-primary-200/70 hover:bg-primary-300 border border-primary-200 rounded-full transition-colors">
+            <span
+              class="text-primary-900 text-xs font-medium truncate pointer-events-none"
+              x-text="(models.find(m => m.id === selectedModel)?.name) || selectedModel || 'Select Model'"
+            ></span>
+            <select
+              x-model="selectedModel"
+              class="absolute inset-0 w-full h-full opacity-0 cursor-pointer focus:outline-none"
+              aria-label="Select model"
+            >
+              <option value="">Select Model</option>
+              <template x-for="model in models" :key="model.id">
+                <option
+                  :value="model.id"
+                  x-text="model.name || model.id"
+                ></option>
+              </template>
+            </select>
+            <svg
+              class="absolute left-2 top-1/2 -translate-y-1/2 h-3.5 w-3.5 text-primary-500 pointer-events-none"
+              fill="none"
+              viewBox="0 0 24 24"
+              stroke="currentColor"
+            >
+              <path
+                stroke-linecap="round"
+                stroke-linejoin="round"
+                stroke-width="2"
+                d="M9.75 17L9 20l-1 1h8l-1-1-.75-3M3 13h18M5 17h14a2 2 0 002-2V5a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"
+              />
+            </svg>
+            <svg
+              class="absolute right-1.5 top-1/2 -translate-y-1/2 h-3 w-3 text-primary-500 pointer-events-none"
+              fill="none"
+              viewBox="0 0 24 24"
+              stroke="currentColor"
+            >
+              <path
+                stroke-linecap="round"
+                stroke-linejoin="round"
+                stroke-width="2"
+                d="M19 9l-7 7-7-7"
+              />
+            </svg>
+          </div>
+
+          <!-- Thinking Toggle Badge -->
+          <button
+            type="button"
+            @click="thinkingEnabled = !thinkingEnabled"
+            :class="thinkingEnabled
+              ? 'bg-primary-600 text-white border-primary-600 hover:bg-primary-700'
+              : 'bg-transparent text-primary-500 border-primary-300 hover:bg-primary-200/70'"
+            class="relative h-7 w-7 rounded-full border transition-colors flex items-center justify-center flex-shrink-0"
+            :title="thinkingEnabled ? 'Thinking on' : 'Thinking off'"
+            :aria-pressed="thinkingEnabled ? 'true' : 'false'"
+            aria-label="Toggle thinking"
+          >
+            <svg class="h-3.5 w-3.5" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+              <path d="M12 5a3 3 0 0 0-5.997.125 4 4 0 0 0-2.526 5.77 4 4 0 0 0 .556 6.588A4 4 0 0 0 12 21z" />
+              <path d="M12 5a3 3 0 1 1 5.997.125 4 4 0 0 1 2.526 5.77 4 4 0 0 1-.556 6.588A4 4 0 0 1 12 21" />
+              <path d="M15 13a4.5 4.5 0 0 1-3-4 4.5 4.5 0 0 1-3 4" />
+              <path d="M17.599 6.5a3 3 0 0 0 .399-1.375" />
+              <path d="M6.003 5.125A3 3 0 0 0 6.401 6.5" />
+              <path d="M3.477 10.896a4 4 0 0 1 .585-.396" />
+              <path d="M19.938 10.5a4 4 0 0 1 .585.396" />
+              <path d="M6 18a4 4 0 0 1-1.967-.516" />
+              <path d="M19.967 17.484A4 4 0 0 1 18 18" />
+            </svg>
+            <svg
+              x-show="!thinkingEnabled"
+              class="absolute inset-0 h-full w-full text-primary-500"
+              viewBox="0 0 24 24"
+              fill="none"
+              stroke="currentColor"
+              aria-hidden="true"
+            >
+              <line x1="5" y1="19" x2="19" y2="5" stroke-width="2" stroke-linecap="round" />
+            </svg>
+          </button>
+
+          <!-- Attach Image Badge Button -->
           <button
             type="button"
             @click="$refs.fileInput.click()"
-            class="self-stretch w-[44px] bg-primary-200 text-primary-700 rounded-xl transition-all flex items-center justify-center flex-shrink-0 hover:bg-primary-300 hover:shadow-md"
+            class="h-7 w-7 bg-primary-200/70 text-primary-700 rounded-full transition-colors flex items-center justify-center flex-shrink-0 hover:bg-primary-300"
             title="Attach Image"
+            aria-label="Attach Image"
           >
-            <svg class="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+            <svg class="h-3.5 w-3.5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
               <path
                 stroke-linecap="round"
                 stroke-linejoin="round"
@@ -232,50 +302,38 @@
             </svg>
           </button>
 
-          <!-- Hidden File Input -->
-          <input
-            x-ref="fileInput"
-            type="file"
-            accept="image/png, image/jpeg, image/webp"
-            multiple
-            class="hidden"
-            @change="
-              Array.from($event.target.files).forEach(file => {
-                const reader = new FileReader();
-                reader.onload = (e) => { selectedImages.push(e.target.result); };
-                reader.readAsDataURL(file);
-              });
-              $event.target.value = '';
-            "
-          />
 
-          <textarea
-            x-model="inputMessage"
-            placeholder="Type your message..."
-            rows="1"
-            class="scrollbar-hide flex-1 p-3 bg-primary-50 border border-primary-200 rounded-xl focus:outline-none focus:ring-2 focus:ring-primary-400 text-primary-900 text-sm transition-shadow hover:bg-primary-100 resize-none overflow-y-auto max-h-60"
-            @keydown.enter="if (!$event.shiftKey) { $event.preventDefault(); sendMessage(); }"
-            @input="$el.style.height = 'auto'; $el.style.height = $el.scrollHeight + 'px'"
-          ></textarea>
 
+          <!-- Stop Button -->
+          <button
+            x-show="loading"
+            type="button"
+            @click="stopResponse()"
+            :disabled="!activeStreamChatID"
+            :class="!activeStreamChatID ? 'opacity-50 cursor-not-allowed' : 'hover:bg-tertiary-700'"
+            class="ml-auto h-7 w-7 bg-tertiary-600 text-white rounded-full transition-colors flex items-center justify-center flex-shrink-0"
+            title="Stop response"
+            aria-label="Stop response"
+          >
+            <svg class="h-3 w-3" fill="currentColor" viewBox="0 0 24 24" aria-hidden="true">
+              <path d="M6 6h12v12H6z" />
+            </svg>
+          </button>
+
+          <!-- Send Button -->
           <button
             type="submit"
             :disabled="(!inputMessage.trim() && selectedImages.length === 0) || loading"
-            :class=" ((!inputMessage.trim() && selectedImages.length === 0) || loading) ? 'opacity-50 cursor-not-allowed' : 'hover:shadow-md hover:scale-105'"
-            class="self-stretch w-[44px] bg-gradient-to-r from-primary-600 to-primary-500 text-white rounded-xl transition-all flex items-center justify-center flex-shrink-0"
+            :class=" ((!inputMessage.trim() && selectedImages.length === 0) || loading) ? 'opacity-50 cursor-not-allowed' : 'hover:shadow-md'"
+            class="ml-auto h-7 w-7 bg-gradient-to-r from-primary-600 to-primary-500 text-white rounded-full transition-all flex items-center justify-center flex-shrink-0"
+            title="Send"
+            aria-label="Send"
           >
             <template x-if="loading">
-              <div
-                class="h-4 w-4 animate-spin rounded-full border-2 border-white border-t-transparent"
-              ></div>
+              <div class="h-3 w-3 animate-spin rounded-full border-2 border-white border-t-transparent"></div>
             </template>
             <template x-if="!loading">
-              <svg
-                class="h-4 w-4"
-                fill="none"
-                viewBox="0 0 24 24"
-                stroke="currentColor"
-              >
+              <svg class="h-3.5 w-3.5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                 <path
                   stroke-linecap="round"
                   stroke-linejoin="round"
@@ -285,36 +343,16 @@
               </svg>
             </template>
           </button>
-
-          <button
-            x-show="loading"
-            type="button"
-            @click="stopResponse()"
-            :disabled="!activeStreamChatID"
-            :class="!activeStreamChatID ? 'opacity-50 cursor-not-allowed' : 'hover:shadow-md hover:scale-105'"
-            class="self-stretch w-[44px] bg-tertiary-600 text-white rounded-xl transition-all flex items-center justify-center flex-shrink-0"
-            title="Stop response"
-            aria-label="Stop response"
-          >
-            <svg
-              class="h-4 w-4"
-              fill="currentColor"
-              viewBox="0 0 24 24"
-              aria-hidden="true"
-            >
-              <path d="M6 6h12v12H6z" />
-            </svg>
-          </button>
-        </form>
+        </div>
 
         <!-- Error Message -->
         <div
           x-show="error"
-          class="bg-tertiary-50 border border-tertiary-200 px-4 py-2"
+          class="bg-tertiary-50 border border-tertiary-200 rounded-lg px-4 py-2"
         >
           <p class="text-sm text-tertiary-700" x-text="error"></p>
         </div>
-      </div>
+      </form>
     </div>
   </div>
 
@@ -400,7 +438,7 @@
       <div class="space-y-2">
         <template x-for="chat in chats" :key="chat.id">
           <div
-            @click="selectChat(chat.id); chatListOpen = false;"
+            @click="selectChat(chat.id); if (!window.matchMedia('(min-width: 768px)').matches) chatListOpen = false;"
             :class="[
              'p-3 rounded-lg cursor-pointer transition-all border-l-3',
               selectedChatID === chat.id
diff --git a/frontend/src/components/chatManager.ts b/frontend/src/components/chatManager.ts
index fff2f73..5e67711 100644
--- a/frontend/src/components/chatManager.ts
+++ b/frontend/src/components/chatManager.ts
@@ -17,6 +17,7 @@ import { applyFilter } from '../utils';
 
 const CHAT_ROUTE = '#/chats';
 const MODEL_KEY = 'aethera-chat-model';
+const THINKING_KEY = 'aethera-chat-thinking';
 const IN_PROGRESS_UUID = '00000000-0000-0000-0000-000000000000';
 
 // Markdown Renderer
@@ -37,12 +38,13 @@ Alpine.data('chatManager', () => ({
   _models: [] as Model[],
 
   selectedModel: '',
+  thinkingEnabled: localStorage.getItem(THINKING_KEY) !== 'false',
   inputMessage: '',
   selectedImages: [] as string[],
   error: '',
 
   selectedChatID: null as string | null,
-  chatListOpen: false,
+  chatListOpen: typeof window !== 'undefined' && window.matchMedia('(min-width: 768px)').matches,
   loading: false,
   activeStreamChatID: null as string | null,
 
@@ -113,6 +115,7 @@ Alpine.data('chatManager', () => ({
 
     // Save Model
     if (this.selectedModel) localStorage.setItem(MODEL_KEY, this.selectedModel);
+    localStorage.setItem(THINKING_KEY, String(this.thinkingEnabled));
 
     // New Chat
     if (!this.selectedChatID) {
@@ -145,7 +148,7 @@ Alpine.data('chatManager', () => ({
     try {
       await sendMessage(
         this.selectedChatID === IN_PROGRESS_UUID ? '' : this.selectedChatID,
-        { model: this.selectedModel, prompt: message, images },
+        { model: this.selectedModel, prompt: message, images, thinking: this.thinkingEnabled },
         (chunk: MessageChunk) => {
           if (chunk.chat) this.activeStreamChatID = chunk.chat.id;
           this.applyMessageChunk(chunk);
diff --git a/frontend/src/types/index.ts b/frontend/src/types/index.ts
index b5b2912..fc7f357 100644
--- a/frontend/src/types/index.ts
+++ b/frontend/src/types/index.ts
@@ -71,6 +71,7 @@ export interface GenerateTextRequest {
   model: string;
   prompt: string;
   images?: string[];
+  thinking?: boolean;
 }
 
 export interface ChatListResponse {