# Haystack review, pricing and alternatives

Source: https://listme.name/software/haystack
Website: https://haystack.deepset.ai/

Apache-2.0 framework for pipelines, retrieval and agent workflows

Haystack is an Apache-2.0 open-source framework from deepset for building LLM applications, retrieval pipelines, semantic search and agent workflows. Its repository states it is built for production-ready applications.

Haystack is an open-source AI orchestration framework that builds LLM applications from modular pipelines. Its repository describes explicit control over retrieval, routing, memory and generation, and it supports agent workflows. The project is licensed under Apache 2.0.

Haystack is best known for retrieval-augmented generation and semantic search, which are among the topics listed on its GitHub page. It sits between a full agent library and a retrieval toolkit, and it is more pipeline-oriented than CrewAI or the OpenAI Agents SDK. Teams that want explicit, inspectable pipeline graphs for search may prefer it to LangChain.

- Free and open source | Web | open source (Apache-2.0)
- Price: Free Apache-2.0 framework; the repository lists no fee
- Checked: 2026-10-10

## Strengths

- Apache-2.0 licensed with source on GitHub
- Explicit pipelines for retrieval and routing
- Supports agent workflows

## Limits

- Pipeline concepts take time to learn
- Narrower agent focus than LangChain

## Rankings

- #4 of 8 in [best AI agent frameworks and tooling](https://listme.name/best/ai-agent-tooling), score 85.0: Explicit, inspectable pipelines for retrieval and agent workflows under Apache 2.0. Pipeline design takes time to learn, and its agent focus is narrower than LangChain's.

## Alternatives

- [LangChain](https://listme.name/software/langchain), score 92.0
- [LlamaIndex](https://listme.name/software/llamaindex), score 88.0
- [Pydantic AI](https://listme.name/software/pydantic-ai), score 86.5
- [CrewAI](https://listme.name/software/crewai), score 84.5
- [OpenAI Agents SDK](https://listme.name/software/openai-agents-sdk), score 84.0
- [smolagents](https://listme.name/software/smolagents), score 80.5
- [itsfully.online](https://listme.name/software/itsfully-online), score 62.5