DOC: Missing Information About the model Field in HuggingFaceEndpoint

[KnightChaser]

URL

https://python.langchain.com/api_reference/huggingface/llms/langchain_huggingface.llms.huggingface_endpoint.HuggingFaceEndpoint.html#langchain_huggingface.llms.huggingface_endpoint.HuggingFaceEndpoint.model

Checklist

• I added a very descriptive title to this issue.
• I included a link to the documentation page I am referring to (if applicable).

Issue with current documentation:

In the langchain_huggingface package, the HuggingFaceEndpoint class has a required field named model, which is used to specify the model name, such as microsoft/Phi-3-mini-4k-instruct. However, the corresponding documentation does not include any details about this property.

This omission creates confusion, particularly because the repo_id field also accepts repository ID strings (e.g., microsoft/Phi-3-mini-4k-instruct). The key differences between these fields are as follows:

• The model field is required.
• The repo_id field is marked as optional.
• The endpoint_url field requires the model's URL. (Not a part of current issue)

The lack of clear documentation for the model field, combined with its similarity to repo_id, makes it difficult for developers to understand which field to use.

Idea or request for content:

Writing the differences between the field repo_id and model, and describing the purposes of each property.