FrontierAI.Engineer
Tool Use & Function Calling

JSON Mode

JSON mode is a model inference setting that guarantees the output is syntactically valid JSON. It does not guarantee semantic correctness or schema conformance — only that the text parses without error. JSON mode is useful when a downstream consumer requires parseable output but when the full structure cannot be specified in advance. For strict schema adherence, schema-guided decoding or function calling with explicit parameter types is preferred.