Haystack

Haystack is an open source NLP framework to interact with your data using Transformer models and LLMs (GPT-4, ChatGPT and alike). Haystack offers production-ready tools to quickly build complex decision making, question answering, semantic search, text generation applications, and more.

Haystack is an end-to-end framework that you can use to build powerful and production-ready pipelines for different search use cases. Whether you want to perform question answering or semantic document search, you can use the state-of-the-art NLP models in Haystack to provide unique search experiences and make it possible for your users to query in natural language. Haystack is built in a modular fashion so that you can combine the best technology from other open-source projects, like Hugging Face's Transformers, Elasticsearch, or Milvus.