Chroma provides a convenient wrapper around OpenAI's embedding API. This embedding function runs remotely on OpenAI's servers, and requires an API key. You can get an API key by signing up for an account at OpenAI.

The following OpenAI Embedding Models are supported:

  • text-embedding-ada-002
  • text-embedding-3-small
  • text-embedding-3-large

This embedding function relies on the openai python package, which you can install with pip install openai.

You can pass in an optional model_name argument, which lets you choose which OpenAI embeddings model to use. By default, Chroma uses text-embedding-ada-002.


To use the OpenAI embedding models on other platforms such as Azure, you can use the api_base and api_type parameters: