What it does
Core capabilities at a glance
- Modular pipeline architecture for RAG
- 150+ integrations (models, stores, file types)
- Hybrid retrieval (semantic + keyword + BM25)
- Agents with tool usage
- Evaluation and experiment tracking
- Production-scale document processing
Deep dive
The full breakdown - performance, comparisons, and setup
Haystack
Haystack is the most well-documented and production-ready framework for building RAG pipelines. Created by deepset, it emphasizes clean abstractions and thorough testing.
What it is
Haystack is a Python framework for building search and RAG systems. Its pipeline architecture allows you to compose components - document stores, retrievers, readers, generators - into processing pipelines that can be deployed to production.
How it stacks up
| Haystack | LangChain | RAGFlow | Dify | |
|---|---|---|---|---|
| Pipeline clarity | Best | Complex | Medium | Good |
| Documentation | Excellent | Good | Fair | Good |
| RAG focus | ✓ | General | ✓ | Platform |
| Production-ready | ✓ | ✓ | Beta | ✓ |
| Best for | RAG pipelines | General agents | Document RAG | LLM apps |
Get started
from haystack import Pipeline
from haystack.components.retrievers import EmbeddingRetriever
from haystack.components.generators import OllamaGenerator
pipe = Pipeline()
pipe.add_component("retriever", EmbeddingRetriever(...))
pipe.add_component("generator", OllamaGenerator(model="qwen3:30b"))
pipe.connect("retriever", "generator")When to use something else
Frequently asked
Quick answers to common questions
What is Haystack?
Haystack is a rag tool for local AI workloads. Open-source NLP framework for building production-ready RAG pipelines and search systems.
Is Haystack free and open source?
Yes, Haystack has 25,479 GitHub stars and is licensed under Apache-2.0. You can self-host it for free on linux, macos, windows, docker.
What platforms does Haystack support?
Haystack runs on linux, macos, windows, docker.
What hardware do I need for Haystack?
The hardware requirements depend on which models you run. Check our hardware directory for compatible GPUs and systems. Haystack has 25,479 GitHub stars and an active community.
Does Haystack support GPU acceleration?
Haystack supports GPU acceleration via CUDA, Metal, or Vulkan depending on your platform. For the best performance, pair it with an NVIDIA RTX 4090 or 5090.
What are the best alternatives to Haystack?
Popular alternatives include other rag tools in our directory. Browse our full collection at /tool for comparisons, community reviews, and benchmark data to find the right fit for your workflow.
How much does Haystack cost?
Haystack is free-open-source. It is completely free and open source to self-host.
Pairs well with
Complementary tools, models, and hardware
Comments coming soon
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