About Haystack
Haystack is an open source Python framework from deepset for building search, question answering and agent systems. You assemble pipelines from modular components and keep control of each step.
What it does
Haystack pipelines connect retrievers, models, tools and memory into a workflow you can inspect and debug. The components work with many providers, including OpenAI, Anthropic and Hugging Face, and with vector stores such as Weaviate and Pinecone. Pipelines can be serialized and deployed to containers, including Kubernetes.
Key features
- Modular pipeline components
- Connects to many model providers
- Serializable pipelines for deployment
- Logging and monitoring support
- Agent components with tool use
Who it's for
Developers and data teams building RAG systems, search tools or agents that must run in production. It suits teams that want an open framework rather than a single vendor's platform.
Pricing and good to know
The framework is open source under the Apache-2.0 license. deepset also sells enterprise support and a hosted platform, with pricing based on company size. Check the current terms for those services before you plan around them.
Highlights
- Modular pipeline components
- Connects to many model providers
- Serializable pipelines for deployment
- Logging and monitoring support
- Agent components with tool use
