diff --git a/docs/docs/tutorials/introduction.ipynb b/docs/docs/tutorials/introduction.ipynb
index b978af138..8e40e8b66 100644
--- a/docs/docs/tutorials/introduction.ipynb
+++ b/docs/docs/tutorials/introduction.ipynb
@@ -276,7 +276,7 @@
    ],
    "source": [
     "def stream_graph_updates(user_input: str):\n",
-    "    for event in graph.stream({\"messages\": [(\"user\", user_input)]}):\n",
+    "    for event in graph.stream({\"messages\": [{\"role\": \"user\", \"content\": user_input}]}):\n",
     "        for value in event.values():\n",
     "            print(\"Assistant:\", value[\"messages\"][-1].content)\n",
     "\n",
@@ -958,7 +958,7 @@
     "\n",
     "# The config is the **second positional argument** to stream() or invoke()!\n",
     "events = graph.stream(\n",
-    "    {\"messages\": [(\"user\", user_input)]}, config, stream_mode=\"values\"\n",
+    "    {\"messages\": [{\"role\": \"user\", \"content\": user_input}]}, config, stream_mode=\"values\"\n",
     ")\n",
     "for event in events:\n",
     "    event[\"messages\"][-1].pretty_print()"
@@ -998,7 +998,7 @@
     "\n",
     "# The config is the **second positional argument** to stream() or invoke()!\n",
     "events = graph.stream(\n",
-    "    {\"messages\": [(\"user\", user_input)]}, config, stream_mode=\"values\"\n",
+    "    {\"messages\": [{\"role\": \"user\", \"content\": user_input}]}, config, stream_mode=\"values\"\n",
     ")\n",
     "for event in events:\n",
     "    event[\"messages\"][-1].pretty_print()"
@@ -1036,7 +1036,8 @@
    "source": [
     "# The only difference is we change the `thread_id` here to \"2\" instead of \"1\"\n",
     "events = graph.stream(\n",
-    "    {\"messages\": [(\"user\", user_input)]},\n",
+    "    {\"messages\": [{\"role\": \"user\", \"content\": user_input}]},\n",
+    "    # highlight-next-line\n",
     "    {\"configurable\": {\"thread_id\": \"2\"}},\n",
     "    stream_mode=\"values\",\n",
     ")\n",
@@ -1342,7 +1343,7 @@
     "config = {\"configurable\": {\"thread_id\": \"1\"}}\n",
     "\n",
     "events = graph.stream(\n",
-    "    {\"messages\": [(\"user\", user_input)]}, config, stream_mode=\"values\"\n",
+    "    {\"messages\": [{\"role\": \"user\", \"content\": user_input}]}, config, stream_mode=\"values\"\n",
     ")\n",
     "for event in events:\n",
     "    if \"messages\" in event:\n",
@@ -1724,7 +1725,7 @@
     "config = {\"configurable\": {\"thread_id\": \"1\"}}\n",
     "\n",
     "events = graph.stream(\n",
-    "    {\"messages\": [(\"user\", user_input)]}, config, stream_mode=\"values\"\n",
+    "    {\"messages\": [{\"role\": \"user\", \"content\": user_input}]}, config, stream_mode=\"values\"\n",
     ")\n",
     "for event in events:\n",
     "    if \"messages\" in event:\n",
@@ -2137,8 +2138,14 @@
     "events = graph.stream(\n",
     "    {\n",
     "        \"messages\": [\n",
-    "            (\"user\", \"I'm learning LangGraph. Could you do some research on it for me?\")\n",
-    "        ]\n",
+    "            {\n",
+    "                \"role\": \"user\",\n",
+    "                \"content\": (\n",
+    "                    \"I'm learning LangGraph. \"\n",
+    "                    \"Could you do some research on it for me?\"\n",
+    "                ),\n",
+    "            },\n",
+    "        ],\n",
     "    },\n",
     "    config,\n",
     "    stream_mode=\"values\",\n",
@@ -2211,8 +2218,14 @@
     "events = graph.stream(\n",
     "    {\n",
     "        \"messages\": [\n",
-    "            (\"user\", \"Ya that's helpful. Maybe I'll build an autonomous agent with it!\")\n",
-    "        ]\n",
+    "            {\n",
+    "                \"role\": \"user\",\n",
+    "                \"content\": (\n",
+    "                    \"Ya that's helpful. Maybe I'll \"\n",
+    "                    \"build an autonomous agent with it!\"\n",
+    "                ),\n",
+    "            },\n",
+    "        ],\n",
     "    },\n",
     "    config,\n",
     "    stream_mode=\"values\",\n",