Haystack
Open-source framework for LLM search and agents.
Verified live · 7/11/2026
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What is Haystack?
An open-source Python framework from deepset for building production LLM applications, RAG pipelines, and agents. Pipeline-based architecture with strong retrieval and search focus.
Pros
- Production-ready
- Strong retrieval
- Composable pipelines
Cons
- Search-oriented focus
- Learning curve for pipelines
Pricing
From Free · Open source
Top Haystack alternatives
- Agno — Fast, lightweight framework for multimodal agents.
- CrewAI — Framework for orchestrating role-playing agent crews.
- DSPy — Framework for programming, not prompting, LLMs.
- Griptape — Python framework for agents, pipelines, and workflows.
- LangChain — Popular framework for building LLM apps and agents.
- LangGraph — Graph-based library for stateful, multi-actor agents.