[eric] models: shipped defaults are Sonnet 5 (Anthropic) and GPT-5.6 Terra (OpenAI); explicit user picks untouched

backend/apps/settings/models.py

@@ -70,7 +70,7 @@ DEFAULT_SYSTEM_PROMPT = (
 
 
 # Fresh-install / unset-fallback model. "opus-5" is the plain row: cc/ sub lane for subscription users, API key otherwise.
-DEFAULT_MODEL = "opus-5"
+DEFAULT_MODEL = "sonnet-5"
 
 
 class AppSettings(BaseModel):

backend/tests/test_settings_migration.py

@@ -63,7 +63,7 @@ def test_minimal_old_file_fills_missing_with_defaults(settings_file):
     p_write(settings_file, {"theme": "light"})
     s = store.load_settings()
     assert s.theme == "light"
-    assert s.default_model == "opus-5"  # filled from default
+    assert s.default_model == "sonnet-5"  # filled from default
     assert s.auto_reveal_sub_agents is True
 
 

frontend/src/app/Main.tsx

@@ -322,8 +322,8 @@ const DEFAULT_MODEL_PRIORITY: string[] = [
 ];
 
 const DEFAULT_MODEL_PICKS: Record<string, string[]> = {
-  Anthropic: ['opus-5-cc', 'opus-5', 'opus-5-api', 'sonnet-5-cc', 'sonnet-5'],
-  OpenAI: ['gpt-5.6', 'gpt-5.6-api', 'gpt-5.5', 'gpt-5.5-api'],
+  Anthropic: ['sonnet-5-cc', 'sonnet-5', 'sonnet-5-api', 'opus-5-cc', 'opus-5'],
+  OpenAI: ['gpt-5.6-terra', 'gpt-5.6', 'gpt-5.6-api', 'gpt-5.5', 'gpt-5.5-api'],
   Google: ['gemini-3.6-flash-api', 'gemini-3.5-flash-api', 'gemini-3.1-flash-lite'],
   'OpenSwarm Pro': ['sonnet', 'opus'],
   OpenSwarm: ['gpt-5-mini', 'claude-haiku-4.5', 'gpt-4.1'],

frontend/src/app/pages/Dashboard/DashboardToolbar.tsx

@@ -87,14 +87,14 @@ const DashboardToolbar = React.forwardRef<HTMLDivElement, Props>(
     const defaultThinkingLevel = useAppSelector((s) => s.settings.data.default_thinking_level);
     const settingsLoaded = useAppSelector((s) => s.settings.loaded);
     const [mode, setMode] = useState(defaultMode || 'agent');
-    const [model, setModel] = useState(defaultModel || 'opus-5');
+    const [model, setModel] = useState(defaultModel || 'sonnet-5');
     const [thinkingLevel, setThinkingLevel] = useState<'off' | 'low' | 'medium' | 'high' | 'auto'>(defaultThinkingLevel || 'auto');
     // Snap to the persisted Settings defaults as soon as they arrive from the backend. Without the settingsLoaded guard, the effect fires against the Redux initialState ('sonnet') before the real default has loaded, and the settingsApplied flag then locks out the real default for the rest of the session, so new chats spawn under the stale value.
     const settingsApplied = useRef(false);
     useEffect(() => {
       if (settingsLoaded && !settingsApplied.current) {
         setMode(defaultMode || 'agent');
-        setModel(defaultModel || 'opus-5');
+        setModel(defaultModel || 'sonnet-5');
         setThinkingLevel(defaultThinkingLevel || 'auto');
         settingsApplied.current = true;
       }
@@ -129,7 +129,7 @@ const DashboardToolbar = React.forwardRef<HTMLDivElement, Props>(
     useEffect(() => {
       if (settingsLoaded && inputOpen && !prevInputOpen.current) {
         setMode(defaultMode || 'agent');
-        setModel(defaultModel || 'opus-5');
+        setModel(defaultModel || 'sonnet-5');
         setThinkingLevel(defaultThinkingLevel || 'auto');
       }
       prevInputOpen.current = inputOpen;

frontend/src/shared/state/settingsSlice.ts

@@ -163,7 +163,7 @@ interface SettingsState {
 export const DEFAULT_SETTINGS: AppSettings = {
   default_system_prompt: null,
   default_folder: null,
-  default_model: 'opus-5',
+  default_model: 'sonnet-5',
   default_mode: 'agent',
   default_max_turns: null,
   default_thinking_level: 'auto',