Is gpt-5 supported in v2.4.0?

[castwayalldc]

Hi guys,

I've been trying to use gpt-5 as a model :

new ChatClient("gpt-5", apiKey)

"HTTP 404 (invalid_request_error: model_not_found) The model gpt-5o does not exist or you do not have access to it.

Have anyone been able to work with it or have any workaround?. Thanks in advance.