Haystack is an open-source AI orchestration framework by deepset for building LLM-powered applications including RAG systems, semantic search, and AI agents. It uses a modular pipeline architecture with support for branching, looping, and multimodal inputs (text, image, audio). Haystack integrates with all major LLM providers and vector databases and is designed for production deployments with Kubernetes-ready, serializable pipelines. An enterprise platform tier adds managed hosting and support. Key features: - Modular pipeline architecture with branching and looping support - Production-grade RAG with hybrid retrieval and self-correction loops - Multimodal inputs: text, image, audio transcription - Integrations with OpenAI, Anthropic, Mistral, Weaviate, Pinecone, Elasticsearch - Serializable, cloud-agnostic, Kubernetes-ready pipelines - Haystack Enterprise platform with managed hosting and expert support
Open source core: free. Enterprise Support: flexible pricing by org size. Enterprise Platform: custom pricing (contact deepset).