vllm/examples/online_serving/openai_chat_completion_client.py
Reid 7cbfc10943
[Misc] refactor examples (#16563)
Signed-off-by: reidliu41 <reid201711@gmail.com>
Co-authored-by: reidliu41 <reid201711@gmail.com>
2025-04-14 09:59:15 +00:00

50 lines
1.2 KiB
Python

# SPDX-License-Identifier: Apache-2.0
"""Example Python client for OpenAI Chat Completion using vLLM API server
NOTE: start a supported chat completion model server with `vllm serve`, e.g.
vllm serve meta-llama/Llama-2-7b-chat-hf
"""
from openai import OpenAI
# Modify OpenAI's API key and API base to use vLLM's API server.
openai_api_key = "EMPTY"
openai_api_base = "http://localhost:8000/v1"
messages = [{
"role": "system",
"content": "You are a helpful assistant."
}, {
"role": "user",
"content": "Who won the world series in 2020?"
}, {
"role": "assistant",
"content": "The Los Angeles Dodgers won the World Series in 2020."
}, {
"role": "user",
"content": "Where was it played?"
}]
def main():
client = OpenAI(
# defaults to os.environ.get("OPENAI_API_KEY")
api_key=openai_api_key,
base_url=openai_api_base,
)
models = client.models.list()
model = models.data[0].id
chat_completion = client.chat.completions.create(
messages=messages,
model=model,
)
print("-" * 50)
print("Chat completion results:")
print(chat_completion)
print("-" * 50)
if __name__ == "__main__":
main()