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automation

Haystack: Build AI Orchestration

Get modular AI pipelines with Haystack, ideal for founders building scalable LLM applications, with 25k+ GitHub stars.
advanced⏱ 1-2 days💵 Free (self-hosted)
26,008 stars2,949 forksPythonQuality 8/10Updated 7/25/2026100% free · open source
What it is

Build modular AI pipelines with Haystack to create scalable large language model applications.

What you can make with it

Automations like: a conversational system that answers customer questions using a large language model and retrieves information from a database.

How it helps

Haystack helps by providing a framework for explicit control over retrieval, routing, memory, and generation, making it easier to build complex AI applications. This can save developers time and effort compared to building these systems from scratch.

Real use case example

"A founder of a startup wants to build a conversational chatbot that can answer customer questions about their products. They use Haystack to design a modular pipeline that integrates with their product database and a large language model. After setting up the pipeline, the founder can test the chatbot and refine its performance to provide accurate and helpful responses to customers."

If you're new

A beginner should pick up Haystack when they want to explore building scalable AI applications and need a framework to manage complexity.

If you're senior

A senior engineer or professional would reach for Haystack when they need a highly customizable and extensible framework for building large language model applications.

Common confusion cleared up

Haystack is not a pre-built AI model, but rather a framework for building and orchestrating AI pipelines, which can be a common point of confusion for first-time users.

Pairs with
LLM APIsdatabase management systemsconversational platforms
Why we list it on WorkflowStacks: This skill is included in the marketplace because it's a free and open-source AI orchestration framework that saves cost and is highly customizable.
What it does

Helps you build complex AI applications with modular, production-ready pipelines that handle everything from data retrieval to language generation without requiring deep ML engineering skills.

When to use it
  • •Creating enterprise search systems with semantic document retrieval
  • •Building conversational AI agents with context-aware memory and routing
  • •Developing RAG (Retrieval-Augmented Generation) applications with custom knowledge bases
Quick start
  1. 1Install via pip: pip install haystack-ai
  2. 2Set up a document store (like Elasticsearch or FAISS) to manage your knowledge base
  3. 3Create a retrieval pipeline that connects your documents to an LLM for intelligent querying
  4. 4Configure and test your pipeline with sample documents and queries
Ready-to-paste prompt
from haystack import Pipeline
pipeline = Pipeline()
pipeline.add_node(retriever, name='retriever', inputs=['Query'])
pipeline.add_node(reader, name='reader', inputs=['retriever'])
result = pipeline.run(query='What are the key benefits of AI for startups?')
Saves to your device

Topics

agent
agents
ai
gemini
generative-ai
gpt-4
information-retrieval
large-language-models
llm
machine-learning
nlp
orchestration
python
pytorch
question-answering
rag
retrieval-augmented-generation
semantic-search
summarization
transformers
What's inside — free to inspect
No purchase needed

Read the entire source before you build — unlike paid marketplaces that hide it behind a buy button.

16
top-level files
12
folders
215.3M
repo size
Apache-2.0
license
Key files
.pre-commit-config.yaml
AGENTS.md
README.md
File tree
.clusterfuzzlite/
.github/
docker/
docs-website/
e2e/
examples/
haystack/
images/
pydoc/
releasenotes/
scripts/
test/
.gitattributes
.gitignore
.pre-commit-config.yaml
AGENTS.md
CITATION.cff
CLAUDE.md
code_of_conduct.txt
CONTRIBUTING.md
LICENSE
license-header.txt
licenserc.toml
MIGRATION.md
Quick Actions
Details
Creator
deepset-ai
Language
Python
Category
automation
Published
11/14/2019

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