Azure OpenAI Slow to Stream

Issue

When using OpenAI hosted on Azure, streaming is slow and in big chunks.

Cause

This is a Microsoft Azure issue. Some users have reported the following solutions:

• Update Content Filtering Settings: Inside Azure AI Studio, within "Shared resources" > "Content filters", create a new content filter and set the "Streaming mode (Preview)" under "Output filter" from "Default" to "Asynchronous Filter".

Solution

You can use the smoothStream transformation to stream each word individually.

import { smoothStream, streamText } from 'ai';

const result = streamText({
  model,
  prompt,
  experimental_transform: smoothStream(),
});