Generating Structured JSON Output with Local Llamafile

This article demonstrates how to generate structured JSON outputs from Llamafile, a locally runnable LLM. By leveraging LangChain's JsonOutputParser and PromptTemplate, and defining a custom Answer class to specify the desired JSON structure, the author chains together prompt, LLM, and parser components. This cleverly bypasses Llamafile's lack of built-in structured output functionality. A practical example using Llama-3.2-1B-Instruct-Q8_0.llamafile is provided, along with a link to the complete source code.