diff --git a/python/assistant-stream-hello-world/.gitignore b/python/assistant-stream-hello-world/.gitignore
new file mode 100644
index 0000000000..e985853ed8
--- /dev/null
+++ b/python/assistant-stream-hello-world/.gitignore
@@ -0,0 +1 @@
+.vercel
diff --git a/python/assistant-stream-hello-world/api/chat/completions/index.py b/python/assistant-stream-hello-world/api/chat/completions/index.py
new file mode 100644
index 0000000000..8ed9236e65
--- /dev/null
+++ b/python/assistant-stream-hello-world/api/chat/completions/index.py
@@ -0,0 +1,20 @@
+from assistant_stream import create_run, RunController
+from assistant_stream.serialization import DataStreamResponse
+
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+import asyncio
+
+app = FastAPI()
+app.add_middleware(CORSMiddleware, allow_origins=["*"], allow_methods=["*"])
+
+
+@app.post("/api/chat/completions")
+async def chat_completions():
+    async def run(controller: RunController):
+        controller.append_text("Hello ")
+        await asyncio.sleep(1)
+        controller.append_text("world.")
+
+    return DataStreamResponse(create_run(run))
diff --git a/python/assistant-stream-hello-world/requirements.txt b/python/assistant-stream-hello-world/requirements.txt
new file mode 100644
index 0000000000..7a5210fb05
--- /dev/null
+++ b/python/assistant-stream-hello-world/requirements.txt
@@ -0,0 +1,2 @@
+assistant-stream==0.0.2
+fastapi==0.115.0