deepset's pipeline framework for search and retrieval heavy applications. Built by deepset.
Others in general
LlamaIndexAgents that reason over your own documents.
LangChainThe layer almost every Python agent sits on.
Deep AgentsThe agent harness for long, many-step tasks.Common questions
Is Haystack free to use?
Haystack is open source and free to run yourself. You still pay whichever model provider you point it at, and this tutorial is free with no signup.
Do I need to know Python to use Haystack?
Basic Python is enough. Functions, dictionaries and imports cover most of what Haystack asks of you.
When should I not use Haystack?
When something else in general fits the job better. The others in that group are listed below.
Lessons for Haystack are being written. Meanwhile the Claude Code tutorial covers the same ground: state, tools, loops, memory and human approval. Most of it carries straight over.
Start the Claude Code tutorial →