diff --git a/packages/core/src/core/modalityDefaults.test.ts b/packages/core/src/core/modalityDefaults.test.ts
index b90bc069e42..82c25b0e7b9 100644
--- a/packages/core/src/core/modalityDefaults.test.ts
+++ b/packages/core/src/core/modalityDefaults.test.ts
@@ -139,6 +139,14 @@ describe('defaultModalities', () => {
       expect(m.audio).toBeUndefined();
     });
 
+    it('returns image + video for qwen3.6-35b variants', () => {
+      const m = defaultModalities('qwen3.6-35b-a3b-nvfp4');
+      expect(m.image).toBe(true);
+      expect(m.video).toBe(true);
+      expect(m.pdf).toBeUndefined();
+      expect(m.audio).toBeUndefined();
+    });
+
     it('returns text-only for qwen-turbo', () => {
       expect(defaultModalities('qwen-turbo')).toEqual({});
     });
diff --git a/packages/core/src/core/modalityDefaults.ts b/packages/core/src/core/modalityDefaults.ts
index 16bd16c6247..1c336b2f088 100644
--- a/packages/core/src/core/modalityDefaults.ts
+++ b/packages/core/src/core/modalityDefaults.ts
@@ -51,6 +51,8 @@ const MODALITY_PATTERNS: Array<[RegExp, InputModalities]> = [
 
   // Qwen coder / text models: text-only
   [/^qwen3-coder-/, {}],
+  // Qwen3.6-35B-A3B (local quant variants) — image + video
+  [/^qwen3\.6-35b/, { image: true, video: true }],
   [/^qwen/, {}],
 
   // -------------------