diff --git a/src/frontends/tui/minimal.test.ts b/src/frontends/tui/minimal.test.ts
index 1830536..579e908 100644
--- a/src/frontends/tui/minimal.test.ts
+++ b/src/frontends/tui/minimal.test.ts
@@ -77,4 +77,43 @@ describe('MinimalTui backend command', () => {
 
     expect(mockRouter.setLocalClient).toHaveBeenCalled();
   });
+
+  it('syncs agent tier when /model command switches tier', () => {
+    const mockSession = {
+      id: 'test',
+      getHistory: () => [],
+      addMessage: vi.fn(),
+      clear: vi.fn(),
+    };
+
+    const mockRouter = {
+      getTier: () => 'default' as const,
+      getAvailableTiers: () => ['default', 'local'],
+      setTier: vi.fn(() => true),
+      getLocalProviderName: () => 'ollama',
+      setLocalClient: vi.fn(),
+      chat: vi.fn(),
+      getClient: vi.fn(),
+    };
+
+    const mockAgent = {
+      setModelTier: vi.fn(),
+      getModelTier: vi.fn(() => 'default'),
+      process: vi.fn(),
+    };
+
+    const tui = new MinimalTui({
+      session: mockSession as any,
+      modelClient: mockRouter as any,
+      modelRouter: mockRouter as any,
+      agent: mockAgent as any,
+      systemPrompt: 'test',
+    });
+
+    // Call private handleModelCommand to switch to local
+    (tui as any).handleModelCommand('local');
+
+    expect(mockRouter.setTier).toHaveBeenCalledWith('local');
+    expect(mockAgent.setModelTier).toHaveBeenCalledWith('local');
+  });
 });
diff --git a/src/frontends/tui/minimal.ts b/src/frontends/tui/minimal.ts
index 57f58ce..1ea8344 100644
--- a/src/frontends/tui/minimal.ts
+++ b/src/frontends/tui/minimal.ts
@@ -213,6 +213,10 @@ export class MinimalTui {
 
     const tier = resolveModelAlias(name);
     if (router.setTier(tier)) {
+      // Also update the agent tier so chatWithRouter uses the correct client
+      if (this.config.agent) {
+        this.config.agent.setModelTier(tier);
+      }
       console.log(`${colors.gray}Switched to model:${colors.reset} ${tier}\n`);
     } else {
       console.log(`${colors.gray}Model not available:${colors.reset} ${name}\n`);