Quickstart

curl https://gateway.langwatch.ai/v1/chat/completions \
  -H "Authorization: Bearer $LANGWATCH_VIRTUAL_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-5-mini",
    "messages": [{"role": "user", "content": "Say hi in one word"}]
  }'

from openai import OpenAI

client = OpenAI(
    base_url="https://gateway.langwatch.ai/v1",
    api_key="vk-lw-...",  # your virtual key
)

response = client.chat.completions.create(
    model="openai/gpt-5-mini",
    messages=[{"role": "user", "content": "Say hi in one word"}],
)
print(response.choices[0].message.content)

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://gateway.langwatch.ai/v1",
  apiKey: process.env.LANGWATCH_VIRTUAL_KEY,
});

const response = await client.chat.completions.create({
  model: "openai/gpt-5-mini",
  messages: [{ role: "user", content: "Say hi in one word" }],
});
console.log(response.choices[0].message.content);