LangChain is a programming framework for using large language models (LLMs) in applications. Like everything in generative AI, things have moved incredibly fast for https://python.langchain.com/en/latest/index.html.

So what do JavaScript developers (in particular) need to know about LangChain — and indeed about working with LLMs in general?

Unsurprisingly, the main use case for LangChain currently is to build chat-based applications on top of LLMs (especially ChatGPT).

He explained that typically you have a natural language query and a language model will convert that to a SQL query.

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