Merge pull request #7431 from challenp/patch-10

Document model retirements and default versions in Azure Government

Author: prmerger-automator[bot]

articles/ai-foundry/openai/azure-government.md

@@ -56,6 +56,27 @@ To request quota increases for these models, submit a request at [https://aka.ms
 
 <br>
 
+### Model Retirements
+In some cases, models are retired in Azure Governmen ahead of dates in the commercial cloud. General information on model retirement policies, dates, and other details can be found at [Azure OpenAI in Azure AI Foundry model deprecations and retirements](/azure/ai-foundry/openai/concepts/model-retirements). The following shows model retirement differences in Azure Government. 
+
+| Model                     | Version			      | Azure Government Status	  | Public Retirement date             |
+| --------------------------|-------------------|:--------------------------|------------------------------------|
+| `gpt-35-turbo`            | 1106				      | Retired                   | November 11, 2025                  |
+| `gpt-4`                   | turbo-2024-04-09	| Retired                   | November 11, 2025                  |
+
+<br>
+
+### Deafault Model Versions 
+In some cases, new model versions are designated as default in Azure Governmen ahead of dates in the commercial cloud. General information on model upgrades can be found at [Working with Azure OpenAI models](/azure/ai-foundry/openai/how-to/working-with-models?tabs=powershell&branch=main#model-deployment-upgrade-configuration)
+
+The following shows default model differences in Azure Government. 
+
+| Model     | Azure Government Default Version | Public Default Version | Default upgrade date          |
+|-----------|----------------------------------|------------------------|-------------------------------|
+|  `gpt-4o` | 2024-11-20                       | 2024-08-06             | Starting on October 13, 2025  |
+
+<br>
+
 ## Azure OpenAI features
 
 The following feature differences exist when comparing Azure OpenAI in Azure Government vs commercial cloud.