diff --git a/packages/core/src/core/modalityDefaults.test.ts b/packages/core/src/core/modalityDefaults.test.ts
index b225af2ad49..d84d45f44c5 100644
--- a/packages/core/src/core/modalityDefaults.test.ts
+++ b/packages/core/src/core/modalityDefaults.test.ts
@@ -151,6 +151,17 @@ describe('defaultModalities', () => {
       expect(defaultModalities('qwen3.7-max')).toEqual({});
     });
 
+    it('returns image for qwen3.8-max', () => {
+      const m = defaultModalities('qwen3.8-max');
+      expect(m.image).toBe(true);
+      expect(m.video).toBeUndefined();
+    });
+
+    it('returns image for qwen3.8-max-preview (provider-prefixed)', () => {
+      const m = defaultModalities('bailian-token-plan/qwen3.8-max-preview');
+      expect(m.image).toBe(true);
+    });
+
     it('returns image + video for qwen3.6-35b variants', () => {
       const m = defaultModalities('qwen3.6-35b-a3b-nvfp4');
       expect(m.image).toBe(true);
@@ -205,6 +216,14 @@ describe('defaultModalities', () => {
   });
 
   describe('Kimi', () => {
+    it('returns image + video for kimi-k3', () => {
+      const m = defaultModalities('kimi-k3');
+      expect(m.image).toBe(true);
+      expect(m.video).toBe(true);
+      expect(m.pdf).toBeUndefined();
+      expect(m.audio).toBeUndefined();
+    });
+
     it('returns image + video for kimi-k2.5', () => {
       const m = defaultModalities('kimi-k2.5');
       expect(m.image).toBe(true);
diff --git a/packages/core/src/core/modalityDefaults.ts b/packages/core/src/core/modalityDefaults.ts
index dfa21988c31..e043dd757c1 100644
--- a/packages/core/src/core/modalityDefaults.ts
+++ b/packages/core/src/core/modalityDefaults.ts
@@ -40,10 +40,12 @@ const MODALITY_PATTERNS: Array<[RegExp, InputModalities]> = [
   // -------------------
   // Alibaba / Qwen
   // -------------------
-  // Qwen Plus models: image + video support (Max models are text-only)
+  // Qwen Plus models: image + video support
   [/^qwen3\.5-plus/, { image: true, video: true }],
   [/^qwen3\.6-plus/, { image: true, video: true }],
   [/^qwen3\.7-plus/, { image: true, video: true }],
+  // Qwen Max models (3.8+): image support
+  [/^qwen3\.8-max/, { image: true }],
   [/^coder-model$/, { image: true, video: true }],
 
   // Qwen VL (vision-language) models: image + video
@@ -77,6 +79,7 @@ const MODALITY_PATTERNS: Array<[RegExp, InputModalities]> = [
   // -------------------
   // Moonshot / Kimi
   // -------------------
+  [/^kimi-k3/, { image: true, video: true }],
   [/^kimi-k2\./, { image: true, video: true }],
   [/^kimi-/, {}],