Hi @wl-via
Welcome to Microsoft Q&A! Thanks for posting the question.
I believe you have created your resource in WEST US region, however, GPT-4 is not available in WEST US region as per the documentation over here. You screenshot also doesn't show up GPT-4 but it shows different versions of GPT-4 like GPT-4-Turbo etc.
Please create your Azure Open AI resource in any of the supported regions and then try to deploy the model in that region.
Please let me know if you have any questions.
Thanks
Saurabh
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