diff --git a/block_parser_bench.ts b/block_parser_bench.ts
new file mode 100644
index 0000000..8e4dbca
--- /dev/null
+++ b/block_parser_bench.ts
@@ -0,0 +1,68 @@
+/**
+ * Benchmarks for the block parser layer.
+ *
+ * @module bench
+ */
+// deno-lint-ignore-file no-import-prefix no-unversioned-import
+
+import { bench, do_not_optimize, run, summary } from 'npm:mitata';
+
+import {
+  cycleInputs,
+  drainBlockEvents,
+  LARGE_STREAMING_ARTICLE_TEXT,
+  MIXED_TEXT_INPUTS,
+  PATHOLOGICAL_TEXT_INPUTS,
+  PLAIN_TEXT_INPUTS,
+  SAME_SIZE_MIXED_TEXT,
+  SAME_SIZE_PATHOLOGICAL_TEXT,
+  SAME_SIZE_PLAIN_TEXT,
+  SYNTHETIC_ARTICLE_INPUTS,
+} from './_test_utils/perf_fixtures.ts';
+
+const nextPlainText = cycleInputs(PLAIN_TEXT_INPUTS);
+const nextMixedText = cycleInputs(MIXED_TEXT_INPUTS);
+const nextPathologicalText = cycleInputs(PATHOLOGICAL_TEXT_INPUTS);
+const nextSyntheticArticle = cycleInputs(SYNTHETIC_ARTICLE_INPUTS);
+
+summary(() => {
+  bench('blockEvents: plain text (9 KB)', () => {
+    do_not_optimize(drainBlockEvents(nextPlainText()));
+  }).gc('inner');
+
+  bench('blockEvents: mixed wikitext (7.5 KB)', () => {
+    do_not_optimize(drainBlockEvents(nextMixedText()));
+  }).gc('inner');
+
+  bench('blockEvents: pathological delimiters (8-10 KB)', () => {
+    do_not_optimize(drainBlockEvents(nextPathologicalText()));
+  }).gc('inner');
+});
+
+summary(() => {
+  bench('blockEvents: same-size plain (~8 KB)', () => {
+    do_not_optimize(drainBlockEvents(SAME_SIZE_PLAIN_TEXT));
+  }).gc('inner');
+
+  bench('blockEvents: same-size mixed (~8 KB)', () => {
+    do_not_optimize(drainBlockEvents(SAME_SIZE_MIXED_TEXT));
+  }).gc('inner');
+
+  bench('blockEvents: same-size pathological (~8 KB)', () => {
+    do_not_optimize(drainBlockEvents(SAME_SIZE_PATHOLOGICAL_TEXT));
+  }).gc('inner');
+});
+
+summary(() => {
+  bench('blockEvents: synthetic article (~35-45 KB)', () => {
+    do_not_optimize(drainBlockEvents(nextSyntheticArticle()));
+  }).gc('inner');
+});
+
+summary(() => {
+  bench('blockEvents: large mixed article (~100 MB)', () => {
+    do_not_optimize(drainBlockEvents(LARGE_STREAMING_ARTICLE_TEXT));
+  }).gc('inner');
+});
+
+await run();
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