Haystack is an open-source LLM orchestration framework for building customizable, production-ready AI applications. Connect components—like popular language models, vector databases, and file converters—into pipelines or agents that actively retrieve, generate, and reason over your own data. Use Haystack to power AI search assistants for internal knowledge bases, build chatbots for customer support, generate answers from financial or legal documents, or orchestrate multistep agents for data analysis. Haystack streamlines every step of your AI workflow—build, test, and deploy—so you can ship and scale AI faster.