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Overview
Developed bydeepset
Founded2020
LicenseApache License 2.0
Open source✓ Open Source
Use casebuilding NLP applications and search systems
Technical
Protocols
REST API
Also see
Alternative to
LangChain
Based onPython
Knowledge graph stats
Claims40
Avg confidence90%
Avg freshness99%
Last updatedUpdated 4 days ago
WikidataQ62577
Trust distribution
100% unverified
Governance
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Haystack

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Open-source AI pipeline framework by deepset for production NLP applications, Apache 2.0

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maintained by

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deepset○UnverifiedHighFresh1

open source

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true○UnverifiedHighFresh1

developed by

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deepset○UnverifiedHighFresh1

written in

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Python○UnverifiedHighFresh1

primary use case

ValueTrustConfidenceFreshnessSources
building NLP applications and search systems○UnverifiedHighFresh1
building search systems and question answering applications○UnverifiedHighFresh1
question answering systems○UnverifiedHighFresh1
building production-ready NLP applications○UnverifiedHighFresh1
building production-ready LLM applications and RAG pipelines○UnverifiedHighFresh1
building search systems with large language models○UnverifiedHighFresh1
building end-to-end NLP applications○UnverifiedHighFresh1
building search and question-answering applications with LLMs○UnverifiedHighFresh1
semantic search○UnverifiedModerateFresh1
retrieval-augmented generation (RAG)○UnverifiedModerateFresh1

based on

ValueTrustConfidenceFreshnessSources
Python○UnverifiedHighFresh1

supports architecture

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Retrieval-Augmented Generation (RAG)○UnverifiedHighFresh1

integrates with

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Hugging Face Transformers○UnverifiedHighFresh1
Hugging Face○UnverifiedModerateFresh1
Weaviate○UnverifiedModerateFresh1
Elasticsearch○UnverifiedModerateFresh1
OpenAI○UnverifiedModerateFresh1
OpenAI GPT models○UnverifiedModerateFresh1
OpenSearch○UnverifiedModerateFresh1

license type

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Apache License 2.0○UnverifiedHighFresh1

supports protocol

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REST API○UnverifiedHighFresh1

pricing model

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free○UnverifiedHighFresh1

supports model

ValueTrustConfidenceFreshnessSources
Transformers models○UnverifiedModerateFresh1
BERT○UnverifiedModerateFresh1
RoBERTa○UnverifiedModerateFresh1
GPT○UnverifiedModerateFresh1

founded year

ValueTrustConfidenceFreshnessSources
2020○UnverifiedModerateFresh1

alternative to

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LangChain○UnverifiedModerateFresh1

Alternatives & Similar Tools

LangChain
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Commonly Used With

Hugging Face TransformersHugging FaceWeaviateElasticsearchOpenAIOpenAI GPT modelsOpenSearch

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Claim count: 40Last updated: 4/5/2026Edit history