diff --git a/bench/types.exs b/bench/types.exs
new file mode 100644
index 0000000..aa84955
--- /dev/null
+++ b/bench/types.exs
@@ -0,0 +1,7 @@
+types = ["String", "DateTime", "DateTime('UTC')", "Array(String)", "Array(Tuple(String, UInt64))"]
+inputs = Map.new(types, fn type -> {type, type} end)
+
+Benchee.run(
+  %{"decode/1" => fn type -> Ch.Types.decode(type) end},
+  inputs: inputs
+)