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Engineering notes on data, AI and software

Practical articles from the people who build the systems: what tends to go wrong, how we check it, and what we would do again.

Articles tagged "LangChain"

Mar 30, 2026
6 min read

RAG Chatbots: Building AI That Knows Your Business

A retrieval-augmented chatbot is mostly a search problem with a language model on the end. Where these projects go wrong: chunking, retrieval quality, permissions, and having no way to tell whether the answers are any good.

  • NLP
  • RAG
  • Chatbot
  • LangChain
  • AI
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