Structured output

from typing import List
from pydantic import BaseModel
from gwenflow import Agent, ChatOpenAI

class MovieReview(BaseModel):
    title: str
    year: int
    rating: float
    summary: str
    pros: List[str]
    cons: List[str]

agent = Agent(
    name="Movie Critic",
    instructions="You are a film critic. Analyse movies and return structured reviews.",
    llm=ChatOpenAI(model="gpt-5-mini"),
    response_model=MovieReview,
)

response = agent.run("Review the movie: Inception (2010)")
review: MovieReview = response.parsed
print(f"{review.title} ({review.year}): {review.rating}/10")

agent = Agent(
    name="Stock analyst",
    llm=ChatOpenAI(model="gpt-5-mini"),
    tools=[YahooFinanceStock(), YahooFinanceNews()],
    response_model=StockReport,   # filled after the tools have run
)

if response.parsed is None:
    raise ValueError(f"Invalid answer: {response.content}")

llm = ChatOpenAI(model="gpt-5-mini", response_format=MovieReview)
review = llm.invoke("Review Inception (2010)").parsed