# Haystack

> Updated 2026-09-03 · type: tool · category: ai-infrastructure · status: active · rev 1

Pure Apache; production-focused

- Open source: yes (Apache-2.0)
- Self-hostable: yes
- Pricing model: freemium
- Best for: Developers and organizations building production-ready LLM and retrieval-augmented-generation applications in Python.
- Last verified: 2026-09-04

- **Canonical:** https://gtmstacker.com/registry/tool/haystack/
- **Source:** [github · github.com/deepset-ai](https://github.com/deepset-ai/haystack)
- **Tags:** ai-infrastructure
- **Repository:** https://github.com/deepset-ai/haystack

## Is Haystack open source?

Yes — Apache-2.0-licensed.

## How much does Haystack cost?

It has a free tier plus paid plans.

## Can I self-host Haystack?

Yes — it can be self-hosted.


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Pure Apache; production-focused