Claude Opus 5

curl --fail-with-body https://api.inworld.ai/v1/chat/completions \
  -H "Authorization: Basic $INWORLD_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
    "model": "anthropic/claude-opus-5",
    "messages": [{"role": "user", "content": "Hello"}],
    "stream": true
  }'

import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.inworld.ai/v1",
    api_key=os.environ["INWORLD_API_KEY"],
)

response = client.chat.completions.create(
    model="anthropic/claude-opus-5",
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)

const res = await fetch("https://api.inworld.ai/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: `Basic ${process.env.INWORLD_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "anthropic/claude-opus-5",
    messages: [{ role: "user", content: "Hello" }],
  }),
});
if (!res.ok) throw new Error(`HTTP ${res.status}`);
const { choices } = await res.json();
console.log(choices[0].message.content);