📄 ai-sdk/cookbook/node/stream-object
File: stream-object.md | Updated: 11/15/2025
Source: https://ai-sdk.dev/cookbook/node/stream-object
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Object generation can sometimes take a long time to complete, especially when you're generating a large schema.
In Generative UI use cases, it is useful to stream the object to the client in real-time to render UIs as the object is being generated. You can use the streamObject
function to generate partial object streams.
import { openai } from '@ai-sdk/openai';import { streamObject } from 'ai';import { z } from 'zod';
const { partialObjectStream } = streamObject({ model: openai('gpt-4.1'), schema: z.object({ recipe: z.object({ name: z.string(), ingredients: z.array(z.string()), steps: z.array(z.string()), }), }), prompt: 'Generate a lasagna recipe.',});
for await (const partialObject of partialObjectStream) { console.clear(); console.log(partialObject);}
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