Haystack

The open source NLP framework enabling end-to-end search applications

Build search systems that work intelligently over large document collections
Make use of the latest transformer based language models (BERT, RoBERTa, MiniLM, DPR)
Annotate examples, collect user-feedback, evaluate components and finetune models

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Enabling Semantic Search

Question Answering

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Document Search

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Summarization

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Latest Models

Pick any Transformer model from Hugging Face's Model Hub, experiment, find the one that works.

Flexible Document Store

Use Haystack NLP components on top of Elasticsearch, OpenSearch, or plain SQL.

Vector Databases

Boost search performance with Pinecone, Milvus, FAISS, or Weaviate vector databases, and dense passage retrieval.

Scalable

Build semantic search and question answering applications that can scale to millions of documents.

End-to-end

Building blocks for the entire product development cycle such as file converters, indexing functions, models, labeling tools, domain adaptation modules, and REST API.