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ai-sdk-5

Migrate Vercel AI SDK v4 chat implementations to v5 patterns.

Updated Mar 23, 2026
Search Tags:#langchain#migration#streaming#openai#chat#ai sdk#vercel ai
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npx skills add https://github.com/giruclawbot/giru-backup --skill ai-sdk-5-giruclawbot
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Please help me install this Agent Skill.
Skill: ai-sdk-5
Source: https://github.com/giruclawbot/giru-backup/tree/main/skills/ai-sdk-5
Command: npx skills add https://github.com/giruclawbot/giru-backup --skill ai-sdk-5-giruclawbot

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Provides clear migration patterns and examples for upgrading chat and completion integrations from Vercel AI SDK v4 to the breaking changes introduced in v5, reducing integration errors and runtime surprises.

Core Features & Use Cases

  • Updated Client Patterns: Shows how to replace previous useChat usage with @ai-sdk/react and DefaultChatTransport or DefaultCompletionTransport.
  • Message Model Changes: Explains the new UIMessage parts array structure and how to extract and render text, images, and tool calls.
  • Server & Streaming Examples: Demonstrates route handlers streaming model output, LangChain adapter usage, tool integrations, and error handling for robust chat endpoints.
  • Use Case: Upgrade a Next.js chat app to support streaming assistant responses, LangChain-based pipelines, and tool-assisted data lookups while preserving UI rendering and retry behavior.

Quick Start

Update your Next.js chat client to import from @ai-sdk/react, use DefaultChatTransport to send messages to your /api/chat route, and adapt message rendering to read message.parts arrays.

Frequently Asked Questions about ai-sdk-5

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I migrate Vercel AI SDK v4 chat to v5?▼

To migrate Vercel AI SDK v4 chat to v5, update imports to @ai-sdk/react, replace useChat options with DefaultChatTransport, and adapt message rendering to handle the new UIMessage parts array.

What are the breaking changes in Vercel AI SDK v5 for chat implementations?▼

Vercel AI SDK v5 breaking changes include replacing previous useChat patterns with DefaultChatTransport, restructuring messages into UIMessage parts arrays, and requiring toDataStreamResponse-compatible streams from server routes.

How do I handle UIMessage parts arrays in AI SDK v5?▼

Handle UIMessage parts arrays in AI SDK v5 by extracting and rendering text, images, and tool calls directly from the structured parts array instead of accessing previous flat message properties.

Can I use LangChain integrations with Vercel AI SDK v5 streaming?▼

Yes, you can use LangChain integrations with Vercel AI SDK v5 streaming by applying route handlers that use LangChain adapters and return toDataStreamResponse-compatible streams for robust chat endpoints.

Does AI SDK v5 migration work with React and Next.js completion endpoints?▼

AI SDK v5 migration works with React and Next.js completion endpoints by updating client patterns to use DefaultCompletionTransport and ensuring server streams return toDataStreamResponse-compatible streams.

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