Haystack

Haystack is an open source AI framework for creating production-ready LLM-powered agents and applications. It is designed for developers, data scientists, and enterprises who need to build reliable retrieval-augmented generation (RAG) systems, custom AI agents, multimodal AI applications, and conversational bots. Haystack offers modular orchestration, transparent and debuggable pipelines, and integrates seamlessly with popular AI and data tools including OpenAI, Anthropic, HuggingFace, Weaviate, Pinecone, and Elasticsearch.