diff --git a/benchmarks/fib.cpp b/benchmarks/fib.cpp
new file mode 100644
index 0000000..d8486ca
--- /dev/null
+++ b/benchmarks/fib.cpp
@@ -0,0 +1,16 @@
+#include <iostream>
+
+int fib(int n);
+
+int main() {
+  std::cout << fib(38) << std::endl;
+  return 0;
+}
+
+int fib(int n) {
+  if (n < 2) {
+    return n;
+  }
+
+  return fib(n - 1) + fib(n - 2);
+}
diff --git a/benchmarks/fib.js b/benchmarks/fib.js
new file mode 100644
index 0000000..ea6fec3
--- /dev/null
+++ b/benchmarks/fib.js
@@ -0,0 +1,13 @@
+function main() {
+  return fib(38);
+}
+
+function fib(n) {
+  if (n < 2) {
+    return n;
+  }
+
+  return fib(n - 1) + fib(n - 2);
+}
+
+console.log(main());
diff --git a/benchmarks/fib.py b/benchmarks/fib.py
new file mode 100644
index 0000000..5a1d73e
--- /dev/null
+++ b/benchmarks/fib.py
@@ -0,0 +1,7 @@
+def fib(n):
+    if n < 2:
+        return n
+
+    return fib(n - 1) + fib(n - 2)
+
+print(fib(38))
diff --git a/benchmarks/fib.ts b/benchmarks/fib.ts
new file mode 100644
index 0000000..a1c42d8
--- /dev/null
+++ b/benchmarks/fib.ts
@@ -0,0 +1,11 @@
+export default function main() {
+  return fib(38);
+}
+
+function fib(n: number): number {
+  if (n < 2) {
+    return n;
+  }
+
+  return fib(n - 1) + fib(n - 2);
+}