From Pydantic Model to AI Agent in 10 Lines of Python

You've been doing this for a while now: response = client.chat.completions.create( model="gemini-2.0-flash", messages=[{"role": "user", "content": f"Extract the following fields from this text: {fields}. Text: {text}"}] ) data = json.loads(response.choices[0].message.content) proposal = Proposal(**data) Parse the response. Hope the JSON is valid. Add a retry. Add a fallback. Add validation. Repeat for every model in your app. There's a better way. Meet exomodel exomodel is an open-source Python framework that turns your Pydantic models into autonomous agents. Instead of writing prompts that produce objects, you define the object — and it fills itself. The paradigm shift: Old way exomodel way Write prompt → parse response → validate Define schema → call .create() Manual JSON extraction Native Pydantic validation One prompt per model Provider-agnostic, reusable Fragile string parsing Structured output, always Let's build someth