diff --git a/app/routes/api.models.test.ts b/app/routes/api.models.test.ts
new file mode 100644
index 000000000..82e3cd774
--- /dev/null
+++ b/app/routes/api.models.test.ts
@@ -0,0 +1,58 @@
+import { vi, describe, it, expect, beforeEach } from 'vitest';
+import { getProviderInfo, cachedProviders, cachedDefaultProvider } from './api.models';
+import { LLMManager } from '~/lib/modules/llm/manager';
+import type { ModelInfo } from '~/lib/modules/llm/types';
+
+vi.mock('~/lib/modules/llm/manager');
+
+describe('getProviderInfo', () => {
+  beforeEach(() => {
+    vi.resetModules();
+    vi.clearAllMocks();
+  });
+
+  const mockModelInfo: ModelInfo = {
+    name: 'test-model',
+    label: 'Test Model',
+    provider: 'test-provider',
+    maxTokenAllowed: 1000,
+  };
+
+  const mockProvider = {
+    name: 'test-provider',
+    staticModels: [mockModelInfo],
+    getApiKeyLink: 'https://test.com/api-key',
+    labelForGetApiKey: 'Get API Key',
+    icon: 'test-icon',
+  };
+
+  it('should return cached providers and default provider if already cached', () => {
+    const llmManager = {
+      getAllProviders: vi.fn().mockReturnValue([mockProvider]),
+      getDefaultProvider: vi.fn().mockReturnValue(mockProvider),
+    } as unknown as LLMManager;
+
+    const result1 = getProviderInfo(llmManager);
+    expect(result1.providers).toHaveLength(1);
+    expect(result1.providers[0]).toEqual({
+      name: mockProvider.name,
+      staticModels: mockProvider.staticModels,
+      getApiKeyLink: mockProvider.getApiKeyLink,
+      labelForGetApiKey: mockProvider.labelForGetApiKey,
+      icon: mockProvider.icon,
+    });
+    expect(result1.defaultProvider).toEqual({
+      name: mockProvider.name,
+      staticModels: mockProvider.staticModels,
+      getApiKeyLink: mockProvider.getApiKeyLink,
+      labelForGetApiKey: mockProvider.labelForGetApiKey,
+      icon: mockProvider.icon,
+    });
+
+    // Second call should use cached values
+    const result2 = getProviderInfo(llmManager);
+    expect(result2).toEqual(result1);
+    expect(llmManager.getAllProviders).toHaveBeenCalledTimes(1);
+    expect(llmManager.getDefaultProvider).toHaveBeenCalledTimes(1);
+  });
+});