Getting structured output you can parse

After this lesson you can: Make a model return JSON your code can rely on.

First: System prompts, user prompts and roles

Watch

• OpenAI DevDay 2024 | Structured outputs for reliable applications - OpenAI, 41 min. Directly targets reliable schema-shaped outputs from OpenAI, fitting engineers who need parseable JSON in applications.

Notes

When your code needs to consume an LLM response, treat the response as an API payload, not as prose. Instead of asking for “a short explanation” and then trying to scrape fields out of sentences, define the exact shape you want: object fields, arrays, allowed values, required versus optional properties, and data types. The goal is to move ambiguity out of your parser and into an explicit contract with the model.

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