Get a validated Python object back

from pydantic import BaseModel

class ContactInfo(BaseModel):
    name: str
    email: str
    interests: list[str]

response = client.messages.parse(
    model="claude-opus-5-5",
    max_tokens=16000,
    messages=[{"role": "user", "content": "Extract: Jane Doe ([email protected]) likes APIs and SDKs."}],
    output_format=ContactInfo,
)
contact = response.parsed_output