Haystack — open-source AI Infrastructure

Updated 2026-09-03 · tool · AI Infrastructure · rev 1 · structured JSON

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

Is Haystack open source?

Yes, Haystack is open source under the Apache-2.0 license.

How much does Haystack cost?

Haystack has a free tier plus paid plans. The open-source version can be self-hosted with no license cost; you pay only for your own infrastructure.

Can I self-host Haystack?

Yes, Haystack can be self-hosted (the source is available under the Apache-2.0 license).

• Source: github · github.com/deepset-ai
• Repository: https://github.com/deepset-ai/haystack

More AI Infrastructure in the registry.