Haystack

Provider: deepset GmbH

Haystack is an open-source Python framework for building production-ready, agent-like applications. It enables developers to construct pipelines and agents that use chat-based LLMs and external tools (e.g., search APIs, data connectors) in iterative loops with state management, tool selection, and exit conditions. Components include retrievers, readers, generators, routers, tool-invokers, and evaluation modules.

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