diff --git a/src/bench.ts b/src/bench.ts
new file mode 100644
index 0000000..9246dd6
--- /dev/null
+++ b/src/bench.ts
@@ -0,0 +1,18 @@
+import * as v4 from 'npm:diary@^0.4';
+import * as v5 from './mod.ts';
+
+v4.enable('*');
+
+let log = v4.diary('test', (e) => {
+	JSON.stringify(e);
+});
+Deno.bench('v4', () => {
+	log.info('hello', { name: 'world' });
+});
+
+let logv5 = v5.diary((e) => {
+	JSON.stringify(e);
+});
+Deno.bench('v5', () => {
+	logv5('info', 'hello {name}', { name: 'world' });
+});