preview version updates

Author: jaep3347

articles/ai-services/content-understanding/quickstart/use-rest-api.md

@@ -193,7 +193,15 @@ The 200 (`OK`) JSON response includes a `status` field indicating the status of
         ]
       }
     ]
-  }
+  },
+  "usage": {
+		"documentPages": 1,
+		"tokens": {
+			"contextualization": 1000,
+			"input": 1866,
+			"output": 87
+		}
+	}
 }
 ```
 
@@ -229,7 +237,14 @@ The 200 (`OK`) JSON response includes a `status` field indicating the status of
         ]
       }
     ]
-  }
+  },
+  "usage": {
+		"tokens": {
+			"contextualization": 1000,
+			"input": 1866,
+			"output": 87
+		}
+	}
 }
 ```
 
@@ -274,7 +289,14 @@ The 200 (`OK`) JSON response includes a `status` field indicating the status of
         ]
       }
     ]
-  }
+  },
+  "usage": {
+		"tokens": {
+			"contextualization": 1000,
+			"input": 1866,
+			"output": 87
+		}
+	}
 }
 ```
 
@@ -334,7 +356,14 @@ The 200 (`OK`) JSON response includes a `status` field indicating the status of
         ]
       }
     ]
-  }
+  },
+  "usage": {
+		"tokens": {
+			"contextualization": 1000,
+			"input": 1866,
+			"output": 87
+		}
+	}
 }
 ```
 

articles/ai-services/content-understanding/whats-new.md

@@ -17,6 +17,13 @@ ms.custom:
 
 Azure AI Content Understanding service is updated on an ongoing basis. Bookmark this page to stay up to date with release notes, feature enhancements, and our newest documentation.
 
+## October 2025
+
+Azure AI Content Understanding preview version introduces the following updates:
+
+* Azure AI Content Understanding now has increased field count support (1,000) for all modalities. 
+* The API response body now inclues input, output, and contextualization tokens consumed as part of the `tokens` object. Check out the [quickstart](quickstart/use-rest-api.md) article for more information.
+
 ## May 2025
 
 The Azure AI Content Understanding [**`2025-05-01-preview`**](/rest/api/contentunderstanding/content-analyzers?view=rest-contentunderstanding-2025-05-01-preview&preserve-view=true) REST API is now available. This update introduces the following updates and enhanced capabilities: