Skip to main content

Haystack Documentation

2.26-unstable
2.25
2.24
2.23
2.22
2.21
2.20
2.19
2.18
1.x archived documentation
2.x archived documentation

Docs API Reference

Contribute GitHub

Introduction
Overview
Haystack Concepts
Document Stores
Pipeline Components
Tools
Optimization
Development

This is documentation for Haystack Documentation 2.18, which is no longer actively maintained.

For up-to-date documentation, see the latest version (2.25).

Pipeline Components
Evaluators
External Integrations

Version: 2.18

External Integrations

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

DocumentRecallEvaluator

FaithfulnessEvaluator

Community

Learn

Tutorials
Cookbooks

More

Integrations
Platform - Try Free
Enterprise Support

Company

About
Careers
Blog

Legal

Privacy Policy
Imprint

© 2026 deepset GmbH. All rights reserved.