JSON Mode
JSON mode is a model configuration setting that constrains the AI's output to be valid, parseable JSON. When enabled, the model guarantees its response conforms to JSON syntax rules, eliminating common issues like markdown wrapping, trailing commas, or natural language mixed into the output. Some implementations also support schema enforcement, where the output must match a specific JSON schema with defined fields and types.
Example
Without JSON mode, asking "List 3 fruits with colors" might return: "Here are three fruits: 1. Apple - red..." With JSON mode enabled, the model returns: [{"fruit": "apple", "color": "red"}, {"fruit": "banana", "color": "yellow"}, {"fruit": "grape", "color": "purple"}] — valid JSON ready for application code.
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