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Haystack is an open source NLP framework to build applications with Transformer models and LLMs.

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Which is more popular?
Based on our record, Haystack NLP Framework seems to be more popular. It has been mentioned 10 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | haystack.deepset.ai | devone.space |
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| Company | — | 2025 |
| Listed in |
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As answered by people managing Haystack NLP Framework and devone.space.
devone.space's answer:
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Recommendations tracked on public social media and blogs since March 2021.


I immediately thought this was an update by Deepset and their Haystack framework. https://haystack.deepset.ai/ Just FYI. - Source: Hacker News / about 1 year ago
Haystack: An open-source framework for building production-ready LLM applications. - Source: dev.to / about 1 year ago
Haystack forms the backbone of our RAG system. It provides pipelines for processing documents, embedding text, and retrieving relevant information. - Source: dev.to / over 1 year ago
Tracking devone.space since Jul 2025.
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