diff --git a/packages/core/src/config/config.test.ts b/packages/core/src/config/config.test.ts
index 6b4e65dc79..a9c3b04620 100644
--- a/packages/core/src/config/config.test.ts
+++ b/packages/core/src/config/config.test.ts
@@ -1354,6 +1354,21 @@ describe('Config getHooks', () => {
     expect(retrievedHooks).toEqual(allEventHooks);
     expect(Object.keys(retrievedHooks!)).toHaveLength(11); // All hook event types
   });
+
+  describe('setModel', () => {
+    it('should allow setting a pro (any) model and disable fallback mode', () => {
+      const config = new Config(baseParams);
+      config.setFallbackMode(true);
+      expect(config.isInFallbackMode()).toBe(true);
+
+      const proModel = 'gemini-2.5-pro';
+      config.setModel(proModel);
+
+      expect(config.getModel()).toBe(proModel);
+      expect(config.isInFallbackMode()).toBe(false);
+      expect(mockCoreEvents.emitModelChanged).toHaveBeenCalledWith(proModel);
+    });
+  });
 });
 
 describe('Config getExperiments', () => {
diff --git a/packages/core/src/config/config.ts b/packages/core/src/config/config.ts
index 20fe3b578d..ef3598824b 100644
--- a/packages/core/src/config/config.ts
+++ b/packages/core/src/config/config.ts
@@ -692,10 +692,7 @@ export class Config {
   }
 
   setModel(newModel: string): void {
-    // Do not allow Pro usage if the user is in fallback mode.
-    if (newModel.includes('pro') && this.isInFallbackMode()) {
-      return;
-    }
+    this.setFallbackMode(false);
 
     if (this.model !== newModel) {
       this.model = newModel;