diff --git a/code/ai/demo.py b/code/ai/demo.py
new file mode 100644
index 00000000..f8940362
--- /dev/null
+++ b/code/ai/demo.py
@@ -0,0 +1,20 @@
+# Please install OpenAI SDK first: `pip3 install openai`
+import os
+from openai import OpenAI
+
+client = OpenAI(
+    api_key=os.environ.get('DEEPSEEK_API_KEY'),
+    base_url="https://api.deepseek.com")
+
+response = client.chat.completions.create(
+    model="deepseek-v4-pro",
+    messages=[
+        {"role": "system", "content": "You are a helpful assistant"},
+        {"role": "user", "content": "Hello"},
+    ],
+    stream=False,
+    reasoning_effort="high",
+    extra_body={"thinking": {"type": "enabled"}}
+)
+
+print(response.choices[0].message.content)
\ No newline at end of file