Svelte 5 + AI SDK Integration Guide

Goal: Integrate Svelte AI Elements with Vercel AI SDK to build a streaming AI chat interface using OpenRouter models and shadcn-svelte

Prerequisites Required

This guide assumes you've completed the Basic Setup. If you haven't set up your environment yet, please complete the basic setup first:

  • SvelteKit project with TypeScript and Tailwind CSS
  • shadcn-svelte UI components configured
  • OpenRouter API key and AI SDK installed
  • AI configuration file created
View Basic Setup Guide

Note: Continue building the project by implementing the necessary components and logic as outlined in the guide.

File Structure & Backend API

Create the backend API endpoint in src/routes/api/chat/+server.ts:

+server.ts

This server endpoint handles incoming chat messages and streams AI responses back to the frontend using the AI SDK's streaming capabilities.

Frontend Chat Interface

Build the chat interface in src/routes/+page.svelte using AI SDK's Svelte integration:

+page.svelte

The Chat class from AI SDK automatically handles message state, streaming, and form submission, making it incredibly easy to build chat interfaces.

For more details, refer to the official Vercel AI SDK Svelte documentation.

Add Actions, Message, Prompt Input Component

To install the necessary components, run the following commands:

terminal

Enhance your chat interface with actions, messages, and a prompt input from Svelte AI Elements:

+page.svelte

🎉 You're all set!

Your AI-powered Svelte app is ready with streaming responses and beautiful UI.

Free AI Models for Testing

Here are some free OpenRouter models you can use for testing and development:

Fast & Efficient

Perfect for rapid prototyping and development

Specialized

Optimized for specific use cases

Additional Resources

Essential Links

Key resources to enhance your AI development journey

I hope this guide was helpful!

Found any issues or have questions? Feel free to reach out to me: @Sikandar_Bhide (Bhide Svelte)