Chroma also provides a convenient wrapper around HuggingFace's embedding API. This embedding function runs remotely on HuggingFace's servers, and requires an API key. You can get an API key by signing up for an account at HuggingFace.
You can pass in an optional model_name argument, which lets you choose which HuggingFace model to use. By default, Chroma uses sentence-transformers/all-MiniLM-L6-v2. You can see a list of all available models here.