MemotivaPrompt Engineering Patterns: Structured Outputs, JSON Mode, Function Calling, Schema Validation

What is structured output in LLMs?

Prompt Engineering Patterns: Structured Outputs, JSON Mode, Function Calling, Schema Validation

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What is structured output in LLMs?

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Structured output means constraining the model to produce responses in a specific format like JSON, XML, or a predefined schema. Production systems usually need parseable outputs, not free-form text. Modern LLM APIs from OpenAI, Anthropic, and Google all support structured output through schemas, eliminating the need for fragile prompt-based JSON extraction.
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