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In this article, we are going to talk about three tools that can, at least in theory, force any local LLM to produce structured output: LM Format Enforcer, Outlines, and Guidance. After a short description of each tool, we will evaluate their performance on a few test cases ranging from book recommendations to extracting information from HTML. And the best for the end, we will show you how forcing LLMs to produce a structured output can be used to solve a very common problem in many businesses: extracting structured records from free-form text.

Whether you need to test web applications or troubleshoot software system deployment you may need tools that will help you understand what is actually happening. During our projects we came across couple of handy tools (available as Firefox add-ons [1]) that we found useful. (more…)