Haystack Bot a471fbfebe
Promote unstable docs for Haystack 2.21 (#10204)
Co-authored-by: vblagoje <458335+vblagoje@users.noreply.github.com>
2025-12-08 20:09:00 +01:00

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---
title: "Joiners"
id: joiners
slug: "/joiners"
---
# Joiners
| Component | Description |
| --- | --- |
| [AnswerJoiner](joiners/answerjoiner.mdx) | Joins multiple answers from different Generators into a single list. |
| [BranchJoiner](joiners/branchjoiner.mdx) | Joins different branches of a pipeline into a single output. |
| [DocumentJoiner](joiners/documentjoiner.mdx) | Joins lists of documents. |
| [ListJoiner](joiners/listjoiner.mdx) | Joins multiple lists into a single flat list. |
| [StringJoiner](joiners/stringjoiner.mdx) | Joins strings from different components into a list of strings. |