Haystack

Open-source framework for production AI pipelines

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About Haystack

Haystack is an open-source Python framework from deepset for building retrieval, RAG and agent applications as pipelines. In practice, components for indexing, retrieval, generation and evaluation compose into testable pipelines that deploy as services. For teams moving agents from prototype to production, that focus on reliability and visibility matters more than adding another layer of fragile automation.

Haystack key facts

Category: AI Agents
Pricing: Free — listed in this directory as a free tool, with no paid plan required to use it.
Focus areas: framework, rag, pipelines
Official site: haystack.deepset.ai

About the AI Agents category

Autonomous AI agents that plan and execute tasks for you — general agents, AI browsers, AI employees, app builders, and coding agents. The AI Agents category on Tools Hub currently lists 156 tools. Alongside Haystack, it includes Pydantic AI, Mastra, Agno, Letta.

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