diff --git a/components/header-search-button.tsx b/components/header-search-button.tsx
index 7090a52c..031e81c8 100644
--- a/components/header-search-button.tsx
+++ b/components/header-search-button.tsx
@@ -171,7 +171,7 @@ export function HeaderSearchButton() {
       variant="ghost"
       size="icon"
       onClick={handleResolutionSearch}
-      disabled={isAnalyzing || !map || !actions}
+      disabled={isAnalyzing || (mapProvider === "mapbox" && !map) || !actions}
       title="Analyze current map view"
     >
       {isAnalyzing ? (
@@ -183,7 +183,7 @@ export function HeaderSearchButton() {
   )
 
   const mobileButton = (
-    <Button variant="ghost" size="icon" onClick={handleResolutionSearch} disabled={isAnalyzing || !map || !actions} data-testid="mobile-search-button">
+    <Button variant="ghost" size="icon" onClick={handleResolutionSearch} disabled={isAnalyzing || (mapProvider === "mapbox" && !map) || !actions} data-testid="mobile-search-button">
       {isAnalyzing ? (
         <div className="h-[1.2rem] w-[1.2rem] animate-spin rounded-full border-b-2 border-current"></div>
       ) : (
diff --git a/components/settings/components/model-selection-form.tsx b/components/settings/components/model-selection-form.tsx
index bc6164ba..56b5056a 100644
--- a/components/settings/components/model-selection-form.tsx
+++ b/components/settings/components/model-selection-form.tsx
@@ -134,7 +134,7 @@ export function ModelSelectionForm({ form }: ModelSelectionFormProps) {
             </RadioGroup>
           </FormControl>
           <FormDescription>
-            Select the AI model that will power your planetary copilot.
+            Select the AI model that will power your planet computer.
             Different models have different capabilities and performance
             characteristics.
           </FormDescription>
diff --git a/components/settings/components/settings.tsx b/components/settings/components/settings.tsx
index 8806664d..63471e8f 100644
--- a/components/settings/components/settings.tsx
+++ b/components/settings/components/settings.tsx
@@ -28,9 +28,7 @@ import { SettingsSkeleton } from './settings-skeleton'
 const settingsFormSchema = z.object({
   systemPrompt: z
     .string()
-    .min(10, {
-      message: "System prompt must be at least 10 characters.",
-    })
+    .min(0)
     .max(2000, {
       message: "System prompt cannot exceed 2000 characters.",
     }),
@@ -52,8 +50,7 @@ export type SettingsFormValues = z.infer<typeof settingsFormSchema>
 
 // Default values
 const defaultValues: Partial<SettingsFormValues> = {
-  systemPrompt:
-    "You are a planetary copilot, an AI assistant designed to help users with information about planets, space exploration, and astronomy. Provide accurate, educational, and engaging responses about our solar system and beyond.",
+  systemPrompt: "",
   selectedModel: "Gemini 3.1 Pro",
   users: [],
 }
@@ -180,7 +177,7 @@ export function Settings({ initialTab = "system-prompt" }: SettingsProps) {
                   <Card>
                     <CardHeader>
                       <CardTitle>System Prompt</CardTitle>
-                      <CardDescription>Customize the behavior and persona of your planetary copilot</CardDescription>
+                      <CardDescription>Customize the behavior and persona of your planet computer</CardDescription>
                     </CardHeader>
                     <CardContent>
                       <SystemPromptForm form={form} />
@@ -192,7 +189,7 @@ export function Settings({ initialTab = "system-prompt" }: SettingsProps) {
                   <Card>
                     <CardHeader>
                       <CardTitle>Model Selection</CardTitle>
-                      <CardDescription>Choose the AI model that powers your planetary copilot</CardDescription>
+                      <CardDescription>Choose the AI model that powers your planet computer</CardDescription>
                     </CardHeader>
                     <CardContent>
                       <ModelSelectionForm form={form} />
diff --git a/components/settings/components/system-prompt-form.tsx b/components/settings/components/system-prompt-form.tsx
index 2d8dc110..83740981 100644
--- a/components/settings/components/system-prompt-form.tsx
+++ b/components/settings/components/system-prompt-form.tsx
@@ -19,13 +19,13 @@ export function SystemPromptForm({ form }: SystemPromptFormProps) {
           <FormLabel>System Prompt</FormLabel>
           <FormControl>
             <Textarea
-              placeholder="Enter the system prompt for your planetary copilot..."
+              placeholder="Enter your planet computer system prompt"
               className="min-h-[200px] resize-y"
               {...field}
             />
           </FormControl>
           <FormDescription className="flex justify-between">
-            <span>Define how your copilot should behave and respond to user queries.</span>
+            <span>Define how your planet computer should behave and respond to user queries.</span>
             <span className={characterCount > 1800 ? "text-amber-500" : ""}>{characterCount}/2000</span>
           </FormDescription>
           <FormMessage />
diff --git a/components/settings/settings-view.tsx b/components/settings/settings-view.tsx
index 5f9e16ff..0fc5009a 100644
--- a/components/settings/settings-view.tsx
+++ b/components/settings/settings-view.tsx
@@ -20,7 +20,7 @@ export default function SettingsView() {
       <div className="flex justify-between items-center mb-8">
         <div>
           <h1 className="text-3xl font-bold tracking-tight">Settings</h1>
-          <p className="text-muted-foreground">Manage your planetary copilot preferences and user access</p>
+          <p className="text-muted-foreground">Manage your planet computer preferences and user access</p>
         </div>
         <Button variant="ghost" size="icon" onClick={handleClose}>
           <Minus className="h-6 w-6" />
diff --git a/lib/utils/index.ts b/lib/utils/index.ts
index b2f6d47f..9966abdf 100644
--- a/lib/utils/index.ts
+++ b/lib/utils/index.ts
@@ -34,6 +34,7 @@ export async function getModel(requireVision: boolean = false) {
 
   if (selectedModel) {
     switch (selectedModel) {
+      case 'QCX-Terra':
       case 'Grok 4.2':
         if (xaiApiKey) {
           const xai = createXai({
@@ -41,7 +42,7 @@ export async function getModel(requireVision: boolean = false) {
             baseURL: 'https://api.x.ai/v1',
           });
           try {
-            return xai('grok-4-fast-non-reasoning');
+            return xai(requireVision ? "grok-vision-beta" : "grok-4-fast-non-reasoning");
           } catch (error) {
             console.error('Selected model "Grok 4.2" is configured but failed to initialize.', error);
             throw new Error('Failed to initialize selected model.');
@@ -57,7 +58,7 @@ export async function getModel(requireVision: boolean = false) {
             apiKey: gemini3ProApiKey,
           });
           try {
-            return google('gemini-3.1-pro-preview');
+            return google(requireVision ? "gemini-1.5-pro" : "gemini-3.1-pro-preview");
           } catch (error) {
             console.error('Selected model "Gemini 3.1 Pro" is configured but failed to initialize.', error);
             throw new Error('Failed to initialize selected model.');
@@ -86,7 +87,7 @@ export async function getModel(requireVision: boolean = false) {
       baseURL: 'https://api.x.ai/v1',
     });
     try {
-      return xai('grok-4-fast-non-reasoning');
+      return xai(requireVision ? "grok-vision-beta" : "grok-4-fast-non-reasoning");
     } catch (error) {
       console.warn('xAI API unavailable, falling back to next provider:');
     }
@@ -97,7 +98,7 @@ export async function getModel(requireVision: boolean = false) {
       apiKey: gemini3ProApiKey,
     });
     try {
-      return google('gemini-3.1-pro-preview');
+      return google(requireVision ? "gemini-1.5-pro" : "gemini-3.1-pro-preview");
     } catch (error) {
       console.warn('Gemini 3.1 Pro API unavailable, falling back to next provider:', error);
     }