Directory / Haystack
Haystack
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deepset’s open framework for pipelines, RAG, and agents.
Haystack is an open-source Python framework for LLM pipelines: retrieval, generation, and increasingly agents. deepset sells a commercial platform around it. The library is the listing.
- Model independence
- Multi-model
- Deployment
- Self-hosted
- Open source
- Yes
- License
- Apache-2.0
- Pricing model
- Mixed
- Added / updated
- 19 Aug 2026 / 19 Aug 2026
haystack.deepset.ai · Docs · Source
Editorial take
Haystack is the European, pipeline-first cousin of LlamaIndex. Use it when you want explicit pipeline nodes. It is not a software-factory control plane. deepset’s platform is optional and commercial.
Strengths
- Apache-2.0 pipelines you can read.
- Model-agnostic, self-hosted by default.
- Mature RAG story before agents were fashionable.
Limitations
- Not a coding agent or sandbox.
- Commercial platform is a different product.
- Agent features should be checked against current docs, not 2023 tutorials.