diff --git a/onnx/src/ops/cast.rs b/onnx/src/ops/cast.rs
index f63e483..7ad2471 100644
--- a/onnx/src/ops/cast.rs
+++ b/onnx/src/ops/cast.rs
@@ -66,7 +66,7 @@ impl ElementWiseMiniOp for Cast {
         node: &TypedNode,
     ) -> TractResult<Option<TypedModelPatch>> {
         let from = model.outlet_fact(node.inputs[0])?.datum_type;
-        if from == self.to || (from == TDim::datum_type() && self.to == i32::datum_type()) {
+        if from == self.to {
             Ok(Some(TypedModelPatch::replace_single_op(model, node, &node.inputs, Identity)?))
         } else if from == String::datum_type() && self.to == f32::datum_type() {
             Ok(None)
diff --git a/onnx/src/ops/math/clip.rs b/onnx/src/ops/math/clip.rs
index 5fe33d5..0a240e5 100644
--- a/onnx/src/ops/math/clip.rs
+++ b/onnx/src/ops/math/clip.rs
@@ -54,12 +54,8 @@ impl Expansion for Clip11 {
             1 + self.input_min.is_some() as usize + self.input_max.is_some() as usize,
         )?;
         check_output_arity(outputs, 1)?;
-        if let Some(input) = self.input_min {
-            s.equals(&inputs[0].datum_type, &inputs[input].datum_type)?;
-        }
-        if let Some(input) = self.input_max {
-            s.equals(&inputs[0].datum_type, &inputs[input].datum_type)?;
-        }
+        // Relaxed for streaming cache-len clamps: bounds may be I64 constants while the
+        // clamped value is a symbolic TDim. wire() casts the bounds to the input dtype.
         s.equals(&inputs[0].datum_type, &outputs[0].datum_type)?;
         s.equals(&inputs[0].shape, &outputs[0].shape)?;
         Ok(())
@@ -71,21 +67,30 @@ impl Expansion for Clip11 {
         model: &mut TypedModel,
         inputs: &[OutletId],
     ) -> TractResult<TVec<OutletId>> {
+        let dt = model.outlet_fact(inputs[0])?.datum_type;
         let mut wire = inputs[0];
         if let Some(min) = self.input_min {
+            let mut b = inputs[min];
+            if model.outlet_fact(b)?.datum_type != dt {
+                b = model.wire_node(format!("{name}.min.cast"), tract_core::ops::cast::cast(dt), &[b])?[0];
+            }
             wire = wire_with_rank_broadcast(
                 format!("{name}.min"),
                 model,
                 tract_hir::ops::math::max(),
-                &[wire, inputs[min]],
+                &[wire, b],
             )?[0];
         }
         if let Some(max) = self.input_max {
+            let mut b = inputs[max];
+            if model.outlet_fact(b)?.datum_type != dt {
+                b = model.wire_node(format!("{name}.max.cast"), tract_core::ops::cast::cast(dt), &[b])?[0];
+            }
             wire = wire_with_rank_broadcast(
                 format!("{name}.max"),
                 model,
                 tract_hir::ops::math::min(),
-                &[wire, inputs[max]],
+                &[wire, b],
             )?[0];
         }
         Ok(tvec!(wire))