Shuai Guo writes about implementing structured output with local LLMs to ensure responses are easily consumable by software applications. By using Pydantic models and the Ollama runtime, developers can constrain model generation to follow specific schemas, transforming unstructured text into predictable Python objects. The author demonstrates a smart-home use case where data is sanitized for downstream processing while maintaining privacy via local execution.
- Validating structure does not guarantee content accuracy or logical correctness.
- Complex tasks are better handled through task decomposition (staged approaches).
- Local LLM deployment helps protect sensitive household or personal information.
An overview of popular techniques to confine LLMs' output to a predefined schema, covering API providers, prompting/reprompting strategies, and constrained decoding.
Model Context Protocol server to run Python code in a sandbox using Pyodide in Deno, isolated from the operating system.
An analysis showing that structured outputs can sometimes perform worse than unstructured ones in certain tasks for different LLM models, emphasizing the importance of testing both approaches.