Pros
Why teams pick it
- Vercel AI SDK has first-class OpenAI provider support with streaming, function calling, and structured output.
- LangChain has the most mature OpenAI integration with full support for chat models, embeddings, and function calling.
- OpenAI streaming responses work seamlessly with Next.js API routes and Server Actions via the Vercel AI SDK.
- OpenAI embeddings are the most commonly used with Pinecone for RAG pipelines.