Get Started in 2 Minutes

from openai import OpenAI

client = OpenAI(
    api_key="sk-your-key-here",
    base_url="https://api.vertexapi.net/v1"
)

response = client.chat.completions.create(
    model="deepseek-v4-flash",
    messages=[{"role": "user", "content": "Hello!"}],
    max_tokens=100
)

print(response.choices[0].message.content)

import OpenAI from 'openai';

const client = new OpenAI({
  apiKey: 'sk-your-key-here',
  baseURL: 'https://api.vertexapi.net/v1',
});

const response = await client.chat.completions.create({
  model: 'deepseek-v4-flash',
  messages: [{ role: 'user', content: 'Hello!' }],
  max_tokens: 100,
});

console.log(response.choices[0].message.content);

curl https://api.vertexapi.net/v1/chat/completions \
  -H "Authorization: Bearer sk-your-key-here" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek-v4-flash",
    "messages": [{"role": "user", "content": "Hello!"}],
    "max_tokens": 100
  }'

stream = client.chat.completions.create(
    model="deepseek-v4-flash",
    messages=[{"role": "user", "content": "Tell me a story"}],
    stream=True
)

for chunk in stream:
    if chunk.choices[0].delta.content:
        print(chunk.choices[0].delta.content, end="")