diff --git a/articles/ai-foundry/agents/concepts/model-region-support.md b/articles/ai-foundry/agents/concepts/model-region-support.md
index ccdf02d3a05..9693037a0ed 100644
--- a/articles/ai-foundry/agents/concepts/model-region-support.md
+++ b/articles/ai-foundry/agents/concepts/model-region-support.md
@@ -34,6 +34,7 @@ Azure AI Foundry Agent Service supports the following Azure OpenAI models in the
 >     * Brazil south 
 > * The gpt-5 models are available for the [code interpreter](../how-to/tools/code-interpreter.md) and [file search](../how-to/tools/file-search.md) tools 
 >    * [Registration](https://aka.ms/openai/gpt-5/2025-08-07) is required to use the gpt-5 models. Access will be granted according to Microsoft's eligibility criteria.
+>    * As gpt-5 models [don't support](../../openai/how-to/reasoning.md?tabs=gpt-5%2Cpython%2Cpy#not-supported) `temperature` and `top_p` parameters, leave their values set to `1` in the Agents Playground, to avoid "unsupported parameter" errors.
 
 # [Global standard](#tab/global-standard)