Introducing Structured Outputs in the API

OpenAI Blog Products
structured-outputs api openai developer-tools llm-api

Summary

OpenAI introduces Structured Outputs in their API, enabling developers to reliably get valid JSON schema outputs from language models, improving integration with downstream systems and reducing parsing errors.

We are introducing Structured Outputs in the API—model outputs now reliably adhere to developer-supplied JSON Schemas.
Original Article
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Cached at: 04/20/26, 02:47 PM

# Introducing Structured Outputs in the API Source: [https://openai.com/index/introducing-structured-outputs-in-the-api/](https://openai.com/index/introducing-structured-outputs-in-the-api/) `` ``` 1{2"type": "div",3"label": "",4"children": [5{6"type": "header",7"label": "",8"children": [9{10"type": "div",11"label": "Green Thumb Gardening",12"children": [],13"attributes": [{ "name": "className", "value": "site-title" }]14},15{16"type": "div",17"label": "Bringing Life to Your Garden",18"children": [],19"attributes": [{ "name": "className", "value": "site-tagline" }]20}21],22"attributes": [{ "name": "className", "value": "header" }]23},24{25"type": "section",26"label": "",27"children": [28{29"type": "div",30"label": "",31"children": [32{33"type": "div",34"label": "About Us",35"children": [36{37"type": "div",38"label": "At Green Thumb Gardening, we specialize in transforming your outdoor spaces into beautiful, thriving gardens. Our team has decades of experience in horticulture and landscape design.",39"children": [],40"attributes": [41{ "name": "className", "value": "about-description" }42]43}44],45"attributes": [{ "name": "className", "value": "about-section" }]46}47],48"attributes": [{ "name": "className", "value": "content" }]49}50],51"attributes": [{ "name": "className", "value": "about-container" }]52},53{54"type": "section",55"label": "",56"children": [57{58"type": "div",59"label": "",60"children": [61{62"type": "div",63"label": "Our Services",64"children": [65{66"type": "div",67"label": "Garden Design",68"children": [],69"attributes": [70{ "name": "className", "value": "service-item" }71]72},73{74"type": "div",75"label": "Plant Care & Maintenance",76"children": [],77"attributes": [78{ "name": "className", "value": "service-item" }79]80},81{82"type": "div",83"label": "Seasonal Cleanup",84"children": [],85"attributes": [86{ "name": "className", "value": "service-item" }87]88},89{90"type": "div",91"label": "Custom Landscaping",92"children": [],93"attributes": [94{ "name": "className", "value": "service-item" }95]96}97],98"attributes": [{ "name": "className", "value": "services-list" }]99}100],101"attributes": [{ "name": "className", "value": "content" }]102}103],104"attributes": [{ "name": "className", "value": "services-container" }]105}106],107"attributes": [{ "name": "className", "value": "landing-page" }]108}109 ```

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