diff --git a/vllm/multimodal/inputs.py b/vllm/multimodal/inputs.py
index 750893272..12356b872 100644
--- a/vllm/multimodal/inputs.py
+++ b/vllm/multimodal/inputs.py
@@ -238,12 +238,29 @@ def nested_tensors_equal(a: NestedTensors, b: NestedTensors) -> bool:
         return isinstance(a, torch.Tensor) and torch.equal(b, a)
 
     if isinstance(a, list):
-        return isinstance(b, list) and all(
-            nested_tensors_equal(a_, b_) for a_, b_ in zip(a, b)
+        return (
+            isinstance(b, list)
+            and len(a) == len(b)
+            and all(nested_tensors_equal(a_, b_) for a_, b_ in zip(a, b))
         )
     if isinstance(b, list):
-        return isinstance(a, list) and all(
-            nested_tensors_equal(b_, a_) for b_, a_ in zip(b, a)
+        return (
+            isinstance(a, list)
+            and len(b) == len(a)
+            and all(nested_tensors_equal(b_, a_) for b_, a_ in zip(b, a))
+        )
+
+    if isinstance(a, tuple):
+        return (
+            isinstance(b, tuple)
+            and len(a) == len(b)
+            and all(nested_tensors_equal(a_, b_) for a_, b_ in zip(a, b))
+        )
+    if isinstance(b, tuple):
+        return (
+            isinstance(a, tuple)
+            and len(b) == len(a)
+            and all(nested_tensors_equal(b_, a_) for b_, a_ in zip(b, a))
         )
 
     # Both a and b are scalars