Haystack
Open-source LLM orchestration framework for production AI pipelines
Why choose Haystack
Haystack by deepset is an open-source LLM orchestration framework for building production-ready NLP pipelines and AI agents. It provides composable components for RAG, search, question answering, and agentic workflows, with built-in support for 20+ LLM providers and vector databases.
- Highly modular and composable
- Excellent for production RAG
- Strong evaluation tooling
- Well-documented
Where it falls short
- Can be verbose for simple use cases
- Learning curve for pipeline concepts
Best for these users
Pricing overview
Open-source Haystack is free. deepset Cloud (hosted) starts at $0 for individuals with usage-based pricing for teams.
Check current pricing →Key features
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The verdict
Haystack is a solid choice for ml engineers who need highly modular and composable. At freemium, it delivers good value. Main caveat: can be verbose for simple use cases. Compare with alternatives before committing.