OpenAI Structured Outputs Generally Available

Ever had an AI return JSON that looked almost right but had a missing bracket or a field with the wrong type? That used to be a real headache for developers who then had to write extra code to catch and fix those errors. OpenAI solved this by enforcing JSON Schema directly inside the API itself. You define exactly what shape you want the response to be — which fields, which types, which are required — and the model is now constrained to produce output that matches it, no exceptions. They call it strict mode. It even supports recursive schemas, so you can describe nested structures like trees. Within about a month of launch, roughly 40% of API users switched their integrations to use it. The practical win is huge: fewer production bugs, simpler code, more reliable pipelines. No more "parse the AI's answer and hope for the best".