@Mehmet Mert Tezcan As discussed in the private chat, I am summarizing it here:
I had a look at the backend logs. The see that the State of your request is marked as Ineligible. Thats because, this subscription / request is not an Enterprise Agreement.
The Azure OpenAI Service o1 models require registration and are eligible only to customers on the Enterprise Agreement Offer. The same is documented here.
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