AI SDK UIconvertToCoreMessages

`convertToCoreMessages()`

The convertToCoreMessages function is used to transform an array of UI messages from the useChat hook into an array of CoreMessage objects. These CoreMessage objects are compatible with AI core functions like streamText.

app/api/chat/route.ts

import { openai } from '@ai-sdk/openai';
import { convertToCoreMessages, streamText } from 'ai';

export async function POST(req: Request) {
  const { messages } = await req.json();

  const result = await streamText({
    model: openai('gpt-4o'),
    messages: convertToCoreMessages(messages),
  });

  return result.toDataStreamResponse();
}

Import

import { convertToCoreMessages } from "ai"

API Signature

Parameters

messages:

Message[]

An array of UI messages from the useChat hook to be converted

Returns

An array of CoreMessage objects.

CoreMessage[]:

Array

An array of CoreMessage objects