Toolbox/Agent SDKs & frameworks/deepset-ai/haystack

deepset-ai/haystack

Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation. Built for scalable agents, RAG, multimodal applications, semantic search, and conversational systems.

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PythonApache-2.0semantic-searchinformation-retrievalaipythonlarge-language-models

Stars

26.4k

Δ 7d

+68

Δ 30d

+293

Age

6 yrs

Last push

18h ago

90-day star history

Where this sits in the catalog

GroupFrameworks & SDKs

CategoryAgent SDKs & frameworks#12 of 84 by stars

RankingsNot in any top 20 today — see the rankings

NearbyMulti-agent orchestration (129)Workflow & graph engines (13)Low-code builders (21)Runtimes & sandboxes (16)

Most-wanted open issues

Ranked by 👍 reactions. 68 open issues total, checked 2026-09-02.

Issue	👍	Comments	Opened
OpenAI's Batch API Support P3	3	0	1 yr
Add parallel component execution to Pipeline using a thread pool executor P2	2	0	5 mo
Support gRPC interface of TEI P2	2	3	2 yrs
EU AI Act compliance scan results — Haystack scored #1, wanted to validate findings P2	1	15	5 mo
Feature Request: `pipeline.run()` Progress Bar P3	1	0	1 yr