Jump to Content

Documentation API Reference 📓 Tutorials 🧑‍🍳 Cookbook 🤝 Integrations 💜 Discord 🎨 Studio

Documentation

Documentation API Reference 📓 Tutorials 🧑‍🍳 Cookbook 🤝 Integrations 💜 Discord 🎨 Studio

Overview

Introduction to Haystack
Get Started
Installation
Migration Guide
Telemetry
Breaking Change Policy
FAQ

Haystack Concepts

Haystack Concepts Overview
Data Classes
- ChatMessage
Pipelines
Components
- Creating Custom Components
- SuperComponents
Document Store
- Creating Custom Document Stores
- Choosing a Document Store
Agents
Metadata Filtering
Device Management
Secret Management
Jinja Templates
Introduction to Integrations
Experimental Package

Document Stores

InMemoryDocumentStore
AstraDocumentStore
AzureAISearchDocumentStore
ChromaDocumentStore
CouchbaseDocumentStore
ElasticsearchDocumentStore
LanceDBDocumentStore
MarqoDocumentStore
MilvusDocumentStore
MongoDBAtlasDocumentStore
Neo4jDocumentStore
OpenSearchDocumentStore
PgvectorDocumentStore
PineconeDocumentStore
QdrantDocumentStore
WeaviateDocumentStore

Pipeline Components

Agents
- Agent
Audio
Builders
Caching
- CacheChecker
Classifiers
- DocumentLanguageClassifier
- TransformersZeroShotDocumentClassifier
Connectors
Converters
Embedders
Evaluators
Extractors
- LLMMetadataExtractor
- NamedEntityExtractor
Fetchers
- LinkContentFetcher
- External Integrations
Generators
Joiners
PreProcessors
Rankers
Readers
- ExtractiveReader
Retrievers
Routers
Samplers
- TopPSampler
Tool Components
- ToolInvoker
Validators
- JsonSchemaValidator
WebSearch
Writers
- DocumentWriter

Tools

Tool
ComponentTool
MCPTool
Toolset
MCPToolset

optimization

Evaluation
- Model-Based Evaluation
- Statistical Evaluation
Advanced RAG Techniques
- Hypothetical Document Embeddings (HyDE)

Development

Enabling GPU Acceleration
Tracing
Logging
Hayhooks
Deployment
External Integrations

External Integrations

Name	Description
Flow Judge	Evaluate Haystack pipelines using Flow Judge model.

Updated 3 months ago

Community
GitHub Discussions
Discord
Hugging Face
Open NLP Meetup

Resources
Models
Datasets

Company
About
Jobs

Building products, technology and solutions for LLM-enabled applications.

Privacy Settings Privacy
Imprint

© 2025 deepset GmbH. All rights reserved.