OpenAI has added structured output capabilities in its API, ensuring that generated outputs fully conform to a predefined JSON structure, significantly enhancing the reliability of the API and the accuracy of applications. This feature not only defines the structure of the JSON but also ensures the precision of the output. Additionally, the pricing has been adjusted, with input costs reduced by half and output costs decreased by one-third. The introduction of structured output addresses the limitations of the JSON mode in ensuring that outputs conform to specific structures, significantly improving the model's performance in structured output.