This node establishes a connection with an OpenAI Chat Model. After successfully authenticating using the OpenAI Authenticator node , you can select a chat model from a predefined list.
If OpenAI releases a new model that is not among the listed models, you can also select from a list of all available OpenAI models but you have to ensure that selected model is compatible with the OpenAI Chat API.
Note that chat models can also be used as LLMs because they are actually a subcategory of LLMs that are optimized for chat-like applications. Find documentation about the latest models at OpenAI .