To follow this tutorial you will need to install the following components:

  • An installation of Elasticsearch, based on our hosted Elastic Cloud service (which includes a free trial period), or a self-hosted service that you run on your own computer. See the Install Elasticsearch section above for installation instructions.
  • An API Key for OpenAI. You can actually use any other LLM that you favor, as long as it is supported by the Langchain project.
  • A Python interpreter. Make sure it is a recent version, such as Python 3.8 or newer.
  • Node.js and Yarn.

This tutorial focuses on RAG topics. To be able to modify the example application you will need basic knowledge of the following technologies:

  • Python back end development with Flask.
  • TypeScript front end development with React.

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