Why Does the OpenAI Chat Node Only Show Three Models in the Drop-Down?

When adding an OpenAI chat node to an AI Agent, after entering the API key, I noticed that the model selection drop-down only displays three options: gpt-4o-mini, gpt-4o, and gpt-3.5-turbo.

I expected to see a wider range of models available, and I believe this limitation isn’t due to an issue on OpenAI’s end. Is there a specific reason for this behavior or a workaround to access additional models?