Anthropic SDK

from anthropic import Anthropic

client = Anthropic(
    base_url="https://api.orcarouter.ai",
    api_key="sk-orca-...",
)

response = client.messages.create(
    model="anthropic/claude-sonnet-4.6",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.content[0].text)