Haystack 2

Haystack 2 is deepset’s modular orchestration framework for building production-ready RAG pipelines and autonomous agents.

This open-source framework by deepset replaces rigid chains with a flexible: component-based architecture. Developers build using the Pipeline class to connect discrete units: DocumentStores (like Qdrant or Pinecone), Embedders, and Generators (OpenAI or Anthropic). It supports advanced patterns (including loops for self-correcting agents) and conditional branching for high-precision workflows. With over 50 integrations and a simplified API: Haystack 2 provides the infrastructure to scale RAG applications from local scripts to enterprise production.

https://haystack.deepset.ai/