JSON

Working with JSON in JavaScript, including getting reliable, schema-shaped JSON back from large language models instead of fragile string parsing.

Published on
June 26, 2026
Force an LLM to return JSON in JavaScript
Reliably get JSON from an LLM in JavaScript with OpenAI structured outputs and a Zod schema, instead of prompting for JSON and parsing fragile model text yourself.
javascript snippets llm openai json