diff --git a/specification/ai/Azure.AI.Projects/evaluations/routes.tsp b/specification/ai/Azure.AI.Projects/evaluations/routes.tsp
index f98fd2ca0774..082f1a969678 100644
--- a/specification/ai/Azure.AI.Projects/evaluations/routes.tsp
+++ b/specification/ai/Azure.AI.Projects/evaluations/routes.tsp
@@ -40,6 +40,6 @@ interface Evaluations {
       @body
       evaluation: Evaluation;
     },
-    Evaluation
+    ResourceCreatedResponse<Evaluation>
   >;
 }
diff --git a/specification/ai/Azure.AI.Projects/red-teams/routes.tsp b/specification/ai/Azure.AI.Projects/red-teams/routes.tsp
index 5e9531bcf61d..3e2c7258c97c 100644
--- a/specification/ai/Azure.AI.Projects/red-teams/routes.tsp
+++ b/specification/ai/Azure.AI.Projects/red-teams/routes.tsp
@@ -42,6 +42,6 @@ interface RedTeams {
       @body
       RedTeam: RedTeam;
     },
-    RedTeam
+    ResourceCreatedResponse<RedTeam>
   >;
 }
diff --git a/specification/ai/data-plane/Azure.AI.Projects/preview/2025-05-15-preview/azure-ai-projects-1dp.json b/specification/ai/data-plane/Azure.AI.Projects/preview/2025-05-15-preview/azure-ai-projects-1dp.json
index 07c1ebad19f7..61de4d68e4d6 100644
--- a/specification/ai/data-plane/Azure.AI.Projects/preview/2025-05-15-preview/azure-ai-projects-1dp.json
+++ b/specification/ai/data-plane/Azure.AI.Projects/preview/2025-05-15-preview/azure-ai-projects-1dp.json
@@ -948,8 +948,8 @@
           }
         ],
         "responses": {
-          "200": {
-            "description": "The request has succeeded.",
+          "201": {
+            "description": "The request has succeeded and a new resource has been created as a result.",
             "schema": {
               "$ref": "#/definitions/Evaluation"
             }
@@ -1417,8 +1417,8 @@
           }
         ],
         "responses": {
-          "200": {
-            "description": "The request has succeeded.",
+          "201": {
+            "description": "The request has succeeded and a new resource has been created as a result.",
             "schema": {
               "$ref": "#/definitions/RedTeam"
             }