diff --git a/packages/slate-html-serializer/benchmark/html-serializer/deserialize.js b/packages/slate-html-serializer/benchmark/html-serializer/deserialize.js
new file mode 100644
index 000000000..094a77c4b
--- /dev/null
+++ b/packages/slate-html-serializer/benchmark/html-serializer/deserialize.js
@@ -0,0 +1,42 @@
+/** @jsx h */
+/* eslint-disable react/jsx-key */
+
+import Html from '../..'
+import React from 'react'
+import parse5 from 'parse5' // eslint-disable-line import/no-extraneous-dependencies
+
+const html = new Html({
+  parseHtml: parse5.parseFragment,
+  rules: [
+    {
+      serialize(obj, children) {
+        switch (obj.kind) {
+          case 'block': {
+            switch (obj.type) {
+              case 'paragraph': return React.createElement('p', {}, children)
+              case 'quote': return React.createElement('blockquote', {}, children)
+            }
+          }
+          case 'mark': {
+            switch (obj.type) {
+              case 'bold': return React.createElement('strong', {}, children)
+              case 'italic': return React.createElement('em', {}, children)
+            }
+          }
+        }
+      }
+    }
+  ]
+})
+
+export default function (string) {
+  html.deserialize(string)
+}
+
+export const input = `
+  <blockquote>
+    <p>
+      This is editable <strong>rich</strong> text, <em>much</em> better than a textarea!
+    </p>
+  </blockquote>
+`.trim().repeat(10)
diff --git a/packages/slate-html-serializer/benchmark/html-serializer/serialize.js b/packages/slate-html-serializer/benchmark/html-serializer/serialize.js
new file mode 100644
index 000000000..20d9bc66b
--- /dev/null
+++ b/packages/slate-html-serializer/benchmark/html-serializer/serialize.js
@@ -0,0 +1,49 @@
+/** @jsx h */
+/* eslint-disable react/jsx-key */
+
+import Html from '../..'
+import React from 'react'
+import h from '../../test/helpers/h'
+import parse5 from 'parse5' // eslint-disable-line import/no-extraneous-dependencies
+
+const html = new Html({
+  parseHtml: parse5.parseFragment,
+  rules: [
+    {
+      serialize(obj, children) {
+        switch (obj.kind) {
+          case 'block': {
+            switch (obj.type) {
+              case 'paragraph': return React.createElement('p', {}, children)
+              case 'quote': return React.createElement('blockquote', {}, children)
+            }
+          }
+          case 'mark': {
+            switch (obj.type) {
+              case 'bold': return React.createElement('strong', {}, children)
+              case 'italic': return React.createElement('em', {}, children)
+            }
+          }
+        }
+      }
+    }
+  ]
+})
+
+export default function (state) {
+  html.serialize(state)
+}
+
+export const input = (
+  <state>
+    <document>
+      {Array.from(Array(10)).map(() => (
+        <quote>
+          <paragraph>
+            This is editable <b>rich</b> text, <i>much</i> better than a textarea!
+          </paragraph>
+        </quote>
+      ))}
+    </document>
+  </state>
+)
diff --git a/packages/slate-html-serializer/benchmark/index.js b/packages/slate-html-serializer/benchmark/index.js
new file mode 100644
index 000000000..521d7c484
--- /dev/null
+++ b/packages/slate-html-serializer/benchmark/index.js
@@ -0,0 +1,41 @@
+/* global suite, set, bench */
+
+import fs from 'fs'
+import { basename, extname, resolve } from 'path'
+import { __clear } from '../../slate/lib/utils/memoize'
+
+/**
+ * Benchmarks.
+ */
+
+const categoryDir = resolve(__dirname)
+const categories = fs.readdirSync(categoryDir).filter(c => c[0] != '.' && c != 'index.js')
+
+categories.forEach((category) => {
+  suite(category, () => {
+    set('iterations', 100)
+    set('mintime', 2000)
+
+    if (category == 'models') {
+      after(() => {
+        __clear()
+      })
+    }
+
+    const benchmarkDir = resolve(categoryDir, category)
+    const benchmarks = fs.readdirSync(benchmarkDir).filter(b => b[0] != '.' && !!~b.indexOf('.js')).map(b => basename(b, extname(b)))
+
+    benchmarks.forEach((benchmark) => {
+      const dir = resolve(benchmarkDir, benchmark)
+      const module = require(dir)
+      const fn = module.default
+      let { input, before, after } = module
+      if (before) input = before(input)
+
+      bench(benchmark, () => {
+        fn(input)
+        if (after) after()
+      })
+    })
+  })
+})
diff --git a/packages/slate-plain-serializer/benchmark/index.js b/packages/slate-plain-serializer/benchmark/index.js
new file mode 100644
index 000000000..521d7c484
--- /dev/null
+++ b/packages/slate-plain-serializer/benchmark/index.js
@@ -0,0 +1,41 @@
+/* global suite, set, bench */
+
+import fs from 'fs'
+import { basename, extname, resolve } from 'path'
+import { __clear } from '../../slate/lib/utils/memoize'
+
+/**
+ * Benchmarks.
+ */
+
+const categoryDir = resolve(__dirname)
+const categories = fs.readdirSync(categoryDir).filter(c => c[0] != '.' && c != 'index.js')
+
+categories.forEach((category) => {
+  suite(category, () => {
+    set('iterations', 100)
+    set('mintime', 2000)
+
+    if (category == 'models') {
+      after(() => {
+        __clear()
+      })
+    }
+
+    const benchmarkDir = resolve(categoryDir, category)
+    const benchmarks = fs.readdirSync(benchmarkDir).filter(b => b[0] != '.' && !!~b.indexOf('.js')).map(b => basename(b, extname(b)))
+
+    benchmarks.forEach((benchmark) => {
+      const dir = resolve(benchmarkDir, benchmark)
+      const module = require(dir)
+      const fn = module.default
+      let { input, before, after } = module
+      if (before) input = before(input)
+
+      bench(benchmark, () => {
+        fn(input)
+        if (after) after()
+      })
+    })
+  })
+})
diff --git a/packages/slate-plain-serializer/benchmark/plain-serializer/deserialize.js b/packages/slate-plain-serializer/benchmark/plain-serializer/deserialize.js
new file mode 100644
index 000000000..956aaaf69
--- /dev/null
+++ b/packages/slate-plain-serializer/benchmark/plain-serializer/deserialize.js
@@ -0,0 +1,12 @@
+/** @jsx h */
+/* eslint-disable react/jsx-key */
+
+import Plain from '../..'
+
+export default function (string) {
+  Plain.deserialize(string)
+}
+
+export const input = `
+  This is editable plain text, just like a text area.
+`.trim().repeat(10)
diff --git a/packages/slate-plain-serializer/benchmark/plain-serializer/serialize.js b/packages/slate-plain-serializer/benchmark/plain-serializer/serialize.js
new file mode 100644
index 000000000..aa39d8e99
--- /dev/null
+++ b/packages/slate-plain-serializer/benchmark/plain-serializer/serialize.js
@@ -0,0 +1,25 @@
+/** @jsx h */
+/* eslint-disable react/jsx-key */
+
+import Plain from '../..'
+import h from '../../test/helpers/h'
+
+export default function (state) {
+  Plain.serialize(state)
+}
+
+export const input = (
+  <state>
+    <document>
+      {Array.from(Array(10)).map(() => (
+        <quote>
+          <paragraph>
+            <paragraph>
+              This is editable <b>rich</b> text, <i>much</i> better than a textarea!
+            </paragraph>
+          </paragraph>
+        </quote>
+      ))}
+    </document>
+  </state>
+)