OpenAI Structured Output

JSON mode

• gpt-4-1106-preview

• gpt-3.5-turbo-1106

response_format={
        "type": "json_schema",
        "json_schema": {
            "name": "math_reasoning",
            "schema": {
                "type": "object",
                "properties": {
                    "steps": {
                        "type": "array",
                        "items": {
                            "type": "object",
                            "properties": {
  "explanation": {"type":
                  "string"},
  "output": {"type":
             "string"}
                            },
                            "required": ["explanation",
           "output"],
                            "additionalProperties":
                            False
                        }
                    },
                    "final_answer": {"type": "string"}
                },
                "required": ["steps", "final_answer"],
                "additionalProperties": False
            },
            "strict": True
        }
    }

Introducing Structured Outputs in the API

We are introducing Structured Outputs in the API—model outputs now reliably adhere to developer-supplied JSON Schemas.

https://openai.com/index/introducing-structured-outputs-in-the-api/