Hi @Pathone , Thanks for using Microsoft Q&A Platform.
Have you applied for GPT-4 model using this form https://aka.ms/oai/get-gpt4?
If you have applied and got approved, you should be able to see the GPT-4 preview models in the Azure OpenAI studio under deploy models like mentioned in the screenshot.
Could you please check these details and let us know?
I hope this helps.
-Please kindly accept the answer and vote 'yes' if you feel helpful to support the community, thanks.