diff --git a/crates/uplc/src/machine/cek.rs b/crates/uplc/src/machine/cek.rs
index 9c744325..976f8568 100644
--- a/crates/uplc/src/machine/cek.rs
+++ b/crates/uplc/src/machine/cek.rs
@@ -23,6 +23,7 @@ use super::{
 
 pub struct Machine<'a, B: BuiltinCostModel> {
     pub(super) arena: &'a Arena,
+    initial_budget: ExBudget,
     ex_budget: ExBudget,
     unbudgeted_steps: [u8; 10],
     pub(super) costs: CostModel<B>,
@@ -42,6 +43,7 @@ impl<'a, B: BuiltinCostModel> Machine<'a, B> {
     ) -> Self {
         Machine {
             arena,
+            initial_budget,
             ex_budget: initial_budget,
             unbudgeted_steps: [0; 10],
             costs,
@@ -54,6 +56,7 @@ impl<'a, B: BuiltinCostModel> Machine<'a, B> {
 
     pub fn info(self) -> MachineInfo {
         MachineInfo {
+            remaining_budget: self.initial_budget - self.ex_budget,
             consumed_budget: self.ex_budget,
             logs: self.logs,
         }
diff --git a/crates/uplc/src/machine/cost_model/builtin_costs/builtin_costs_v1.rs b/crates/uplc/src/machine/cost_model/builtin_costs/builtin_costs_v1.rs
index e8bd83d4..f8ae8203 100644
--- a/crates/uplc/src/machine/cost_model/builtin_costs/builtin_costs_v1.rs
+++ b/crates/uplc/src/machine/cost_model/builtin_costs/builtin_costs_v1.rs
@@ -376,8 +376,8 @@ impl BuiltinCostModel for BuiltinCostsV1 {
             divide_integer: TwoArgumentsCosting::new(
                 TwoArgumentsCosting::subtracted_sizes(
                     cost_map["divide_integer-mem-arguments-intercept"],
-                    cost_map["divide_integer-mem-arguments-minimum"],
                     cost_map["divide_integer-mem-arguments-slope"],
+                    cost_map["divide_integer-mem-arguments-minimum"],
                 ),
                 TwoArgumentsCosting::const_above_diagonal_into_multiplied_sizes(
                     cost_map["divide_integer-cpu-arguments-constant"],
diff --git a/crates/uplc/src/machine/cost_model/builtin_costs/builtin_costs_v2.rs b/crates/uplc/src/machine/cost_model/builtin_costs/builtin_costs_v2.rs
index 7dcbdaa8..75c3345a 100644
--- a/crates/uplc/src/machine/cost_model/builtin_costs/builtin_costs_v2.rs
+++ b/crates/uplc/src/machine/cost_model/builtin_costs/builtin_costs_v2.rs
@@ -390,8 +390,8 @@ impl BuiltinCostModel for BuiltinCostsV2 {
             divide_integer: TwoArgumentsCosting::new(
                 TwoArgumentsCosting::subtracted_sizes(
                     cost_map["divide_integer-mem-arguments-intercept"],
-                    cost_map["divide_integer-mem-arguments-minimum"],
                     cost_map["divide_integer-mem-arguments-slope"],
+                    cost_map["divide_integer-mem-arguments-minimum"],
                 ),
                 TwoArgumentsCosting::const_above_diagonal_into_multiplied_sizes(
                     cost_map["divide_integer-cpu-arguments-constant"],
diff --git a/crates/uplc/src/machine/cost_model/builtin_costs/builtin_costs_v3.rs b/crates/uplc/src/machine/cost_model/builtin_costs/builtin_costs_v3.rs
index 1848cb12..73d9cfa1 100644
--- a/crates/uplc/src/machine/cost_model/builtin_costs/builtin_costs_v3.rs
+++ b/crates/uplc/src/machine/cost_model/builtin_costs/builtin_costs_v3.rs
@@ -643,8 +643,8 @@ impl BuiltinCostModel for BuiltinCostsV3 {
             divide_integer: TwoArgumentsCosting::new(
                 TwoArgumentsCosting::subtracted_sizes(
                     cost_map["divide_integer-mem-arguments-intercept"],
-                    cost_map["divide_integer-mem-arguments-minimum"],
                     cost_map["divide_integer-mem-arguments-slope"],
+                    cost_map["divide_integer-mem-arguments-minimum"],
                 ),
                 TwoArgumentsCosting::above_and_below_diagonal_into_quadratic_x_and_y(
                     cost_map["divide_integer-cpu-arguments-minimum"],
diff --git a/crates/uplc/src/machine/cost_model/cost_map.rs b/crates/uplc/src/machine/cost_model/cost_map.rs
index 5825e4d1..96a8e651 100644
--- a/crates/uplc/src/machine/cost_model/cost_map.rs
+++ b/crates/uplc/src/machine/cost_model/cost_map.rs
@@ -610,7 +610,10 @@ impl CostMap {
                     "byteStringToInteger-mem-arguments-slope",
                 ];
 
-                if values.len() == 297 {
+                // Newer parameter vectors may append extra entries after the known
+                // bitwise/ripemd V3 costs. As long as we have at least that prefix,
+                // keep mapping the known keys instead of silently dropping them.
+                if values.len() >= 297 {
                     base_keys.extend([
                         "andByteString-cpu-arguments-intercept",
                         "andByteString-cpu-arguments-slope1",
diff --git a/crates/uplc/src/machine/info.rs b/crates/uplc/src/machine/info.rs
index 4c227f64..b523f66f 100644
--- a/crates/uplc/src/machine/info.rs
+++ b/crates/uplc/src/machine/info.rs
@@ -2,6 +2,7 @@ use super::ExBudget;
 
 #[derive(Debug)]
 pub struct MachineInfo {
+    pub remaining_budget: ExBudget,
     pub consumed_budget: ExBudget,
     pub logs: Vec<String>,
 }
diff --git a/crates/uplc/src/machine/runtime.rs b/crates/uplc/src/machine/runtime.rs
index f5dca7ae..067fae78 100644
--- a/crates/uplc/src/machine/runtime.rs
+++ b/crates/uplc/src/machine/runtime.rs
@@ -2581,7 +2581,7 @@ impl<'a, B: BuiltinCostModel> Machine<'a, B> {
                     .costs
                     .builtin_costs
                     .get_cost(
-                        DefaultFunction::OrByteString,
+                        DefaultFunction::XorByteString,
                         &[
                             cost_model::BOOL_EX_MEM,
                             cost_model::byte_string_ex_mem(left_bytes),
diff --git a/crates/uplc/src/program.rs b/crates/uplc/src/program.rs
index f7101c59..76256b82 100644
--- a/crates/uplc/src/program.rs
+++ b/crates/uplc/src/program.rs
@@ -91,8 +91,7 @@ where
             *self.version,
         );
         let term = machine.run(self.term);
-        let mut info = machine.info();
-        info.consumed_budget = initial_budget - info.consumed_budget;
+        let info = machine.info();
         EvalResult { term, info }
     }
 
diff --git a/crates/uplc/tests/conformance.rs b/crates/uplc/tests/conformance.rs
index d9faa148..b39fc0ee 100644
--- a/crates/uplc/tests/conformance.rs
+++ b/crates/uplc/tests/conformance.rs
@@ -27,12 +27,12 @@ fn run_conformance(file_contents: &str, expected_output: &str, expected_budget:
 
     pretty_assertions::assert_eq!(expected.term, term);
 
-    let consumed_budget = format!(
+    let remaining_budget = format!(
         "({{cpu: {}\n| mem: {}}})",
-        info.consumed_budget.cpu, info.consumed_budget.mem
+        info.remaining_budget.cpu, info.remaining_budget.mem
     );
 
-    pretty_assertions::assert_eq!(consumed_budget, expected_budget);
+    pretty_assertions::assert_eq!(remaining_budget, expected_budget);
 }
 
 include!(concat!(env!("OUT_DIR"), "/generated_tests.rs"));
diff --git a/crates/uplc/tests/conformance_flat.rs b/crates/uplc/tests/conformance_flat.rs
index f7cd178c..1db0da41 100644
--- a/crates/uplc/tests/conformance_flat.rs
+++ b/crates/uplc/tests/conformance_flat.rs
@@ -110,7 +110,7 @@ fn run_conformance(fixture_json: &str) {
     let encoded = flat::encode(result_program).expect("encoder failed on eval result");
 
     assert_eq!(hex::encode(&expected_bytes), hex::encode(&encoded));
-    assert_eq!(result.info.consumed_budget, *budget);
+    assert_eq!(result.info.remaining_budget, *budget);
 }
 
 include!(concat!(env!("OUT_DIR"), "/generated_flat_tests.rs"));