Learn Editor: Update models.md

Author: sydneemayers

articles/ai-services/openai/concepts/models.md

@@ -405,6 +405,17 @@ For more information on Provisioned deployments, see our [Provisioned guidance](
 
 This table doesn't include fine-tuning regional availability information.  Consult the [fine-tuning section](#fine-tuning-models) for this information.
 
+### Data zone standard model availability
+
+#### Select customer access
+
+In addition to the regions above which are available to all Azure OpenAI customers, some select pre-existing customers have been granted access to versions of GPT-4 in additional regions:
+
+| Model | US Data zone region | EUR Data zone region |
+|---|:---|  
+| `gpt-4o`(2024-08-06) <br> `gpt-4o`(2024-05-13) | East US 2 <br> West US <br> | Spain Central <br> Germany West Central |  
+| `gpt-4o-mini` (2024-07-18) | East US 2 <br> West US <br> | Spain Central <br> Germany West Central | 
+
 ### Standard models by endpoint
 
 # [Chat Completions](#tab/standard-chat-completions)