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Haystack

Open-source framework for LLM and RAG pipelines.

Visit Haystack » haystack.deepset.ai

Haystack at a glance
What it doesOpen-source framework for LLM and RAG pipelines
CategoryDeveloper
Websitehaystack.deepset.ai
CheckedWebsite working when last checked (2026-10-16)

In their own words

“Create agentic, context engineered AI systems using Haystack’s modular and customizable building blocks, built for real-world, production-ready applications.”
— from the Haystack website

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How to choose

  1. Try it on your real codebase, not a demo. Results vary a lot by language and project size.
  2. Decide how much control you want: suggestions you accept line by line, or an agent that makes larger changes for you to review.
  3. Check your company's rules on sending code to outside AI services before you start.

Full guide to choosing developer tools »

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