block out rate limit info

Author: PatrickFarley

articles/ai-services/openai/quotas-limits.md

@@ -60,7 +60,9 @@ The following sections provide you with a quick guide to the default quotas and
 
 [!INCLUDE [Quota](./includes/global-batch-limits.md)]
 
-## GPT 4.1 series
+
+
+## GPT 4.1 series rate limits
 
 | Model|Tier| Quota Limit in tokens per minute (TPM) | Requests per minute |
 |---|---|:---:|:---:|
@@ -71,6 +73,11 @@ The following sections provide you with a quick guide to the default quotas and
 | `gpt-4.1-mini` (2025-04-14) | Enterprise Tier | 5 M | 5 K |
 | `gpt-4.1-mini` (2025-04-14) | Default | 1 M | 1 K |
 
+## model router rate limits
+
+| Model|Tier| Quota Limit in tokens per minute (TPM) | Requests per minute |
+|---|---|:---:|:---:|
+| `model-router` (2025-04-15) | Default | 128 K | TBD |
 
 ## computer-use-preview global standard