diff --git a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/CreateOrUpdateTestProfile.json b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/CreateOrUpdateTestProfile.json
index 64e2f5516732..389c8d014750 100644
--- a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/CreateOrUpdateTestProfile.json
+++ b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/CreateOrUpdateTestProfile.json
@@ -13,11 +13,11 @@
         "kind": "FunctionsFlexConsumption",
         "configurations": {
           "config1": {
-            "instanceMemoryMB": 512,
+            "instanceMemoryMB": 2048,
             "httpConcurrency": 16
           },
           "config2": {
-            "instanceMemoryMB": 2048,
+            "instanceMemoryMB": 4096,
             "httpConcurrency": 16
           }
         }
diff --git a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/CreateOrUpdateTestProfileRun.json b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/CreateOrUpdateTestProfileRun.json
index d0765c4ddf08..ee0823ffc42e 100644
--- a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/CreateOrUpdateTestProfileRun.json
+++ b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/CreateOrUpdateTestProfileRun.json
@@ -26,11 +26,11 @@
           "kind": "FunctionsFlexConsumption",
           "configurations": {
             "config1": {
-              "instanceMemoryMB": 512,
+              "instanceMemoryMB": 2048,
               "httpConcurrency": 16
             },
             "config2": {
-              "instanceMemoryMB": 2048,
+              "instanceMemoryMB": 4096,
               "httpConcurrency": 16
             }
           }
diff --git a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/GetTestProfile.json b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/GetTestProfile.json
index de3ccfec49b7..6b39216ab1be 100644
--- a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/GetTestProfile.json
+++ b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/GetTestProfile.json
@@ -17,11 +17,11 @@
           "kind": "FunctionsFlexConsumption",
           "configurations": {
             "config1": {
-              "instanceMemoryMB": 512,
+              "instanceMemoryMB": 2048,
               "httpConcurrency": 16
             },
             "config2": {
-              "instanceMemoryMB": 2048,
+              "instanceMemoryMB": 4096,
               "httpConcurrency": 16
             }
           }
diff --git a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/GetTestProfileRun_Executed.json b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/GetTestProfileRun_Executed.json
index 2dbfe73ad54f..a6695a3d9075 100644
--- a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/GetTestProfileRun_Executed.json
+++ b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/GetTestProfileRun_Executed.json
@@ -21,11 +21,11 @@
           "kind": "FunctionsFlexConsumption",
           "configurations": {
             "config1": {
-              "instanceMemoryMB": 512,
+              "instanceMemoryMB": 2048,
               "httpConcurrency": 16
             },
             "config2": {
-              "instanceMemoryMB": 2048,
+              "instanceMemoryMB": 4096,
               "httpConcurrency": 16
             }
           }
diff --git a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/GetTestProfileRun_Executing.json b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/GetTestProfileRun_Executing.json
index 25756f76a81f..f30557620b8d 100644
--- a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/GetTestProfileRun_Executing.json
+++ b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/GetTestProfileRun_Executing.json
@@ -19,11 +19,11 @@
           "kind": "FunctionsFlexConsumption",
           "configurations": {
             "config1": {
-              "instanceMemoryMB": 512,
+              "instanceMemoryMB": 2048,
               "httpConcurrency": 16
             },
             "config2": {
-              "instanceMemoryMB": 2048,
+              "instanceMemoryMB": 4096,
               "httpConcurrency": 16
             }
           }
diff --git a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/ListTestProfileRuns.json b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/ListTestProfileRuns.json
index 78af0f0b7ad3..76e1cf9ef561 100644
--- a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/ListTestProfileRuns.json
+++ b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/ListTestProfileRuns.json
@@ -29,11 +29,11 @@
               "kind": "FunctionsFlexConsumption",
               "configurations": {
                 "config1": {
-                  "instanceMemoryMB": 512,
+                  "instanceMemoryMB": 2048,
                   "httpConcurrency": 16
                 },
                 "config2": {
-                  "instanceMemoryMB": 2048,
+                  "instanceMemoryMB": 4096,
                   "httpConcurrency": 16
                 }
               }
diff --git a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/ListTestProfiles.json b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/ListTestProfiles.json
index fcf359be1f1a..ac5476e50ba6 100644
--- a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/ListTestProfiles.json
+++ b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/ListTestProfiles.json
@@ -23,11 +23,11 @@
               "kind": "FunctionsFlexConsumption",
               "configurations": {
                 "config1": {
-                  "instanceMemoryMB": 512,
+                  "instanceMemoryMB": 2048,
                   "httpConcurrency": 16
                 },
                 "config2": {
-                  "instanceMemoryMB": 2048,
+                  "instanceMemoryMB": 4096,
                   "httpConcurrency": 16
                 }
               }
diff --git a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/StopTestProfileRun.json b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/StopTestProfileRun.json
index 0837614fbd0d..57ab06f4caf8 100644
--- a/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/StopTestProfileRun.json
+++ b/specification/loadtestservice/LoadTestService/examples/2024-05-01-preview/StopTestProfileRun.json
@@ -21,11 +21,11 @@
           "kind": "FunctionsFlexConsumption",
           "configurations": {
             "config1": {
-              "instanceMemoryMB": 512,
+              "instanceMemoryMB": 2048,
               "httpConcurrency": 16
             },
             "config2": {
-              "instanceMemoryMB": 2048,
+              "instanceMemoryMB": 4096,
               "httpConcurrency": 16
             }
           }
diff --git a/specification/loadtestservice/LoadTestService/models.testprofile.tsp b/specification/loadtestservice/LoadTestService/models.testprofile.tsp
index 02e1e85232ac..7c82e576f1c3 100644
--- a/specification/loadtestservice/LoadTestService/models.testprofile.tsp
+++ b/specification/loadtestservice/LoadTestService/models.testprofile.tsp
@@ -85,7 +85,7 @@ union RecommendationCategory {
 @added(APIVersions.v2024_05_01_preview)
 model FunctionFlexConsumptionResourceConfiguration {
   #suppress "@azure-tools/typespec-azure-core/casing-style" "Abbreviating MB to Mb changes the meaning of the value."
-  @doc("Memory size of the instance. Supported values are 512, 2048, 2096.")
+  @doc("Memory size of the instance. Supported values are 2048, 4096.")
   instanceMemoryMB: int64;
 
   @doc("HTTP Concurrency for the function app.")
diff --git a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/CreateOrUpdateTestProfile.json b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/CreateOrUpdateTestProfile.json
index 64e2f5516732..389c8d014750 100644
--- a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/CreateOrUpdateTestProfile.json
+++ b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/CreateOrUpdateTestProfile.json
@@ -13,11 +13,11 @@
         "kind": "FunctionsFlexConsumption",
         "configurations": {
           "config1": {
-            "instanceMemoryMB": 512,
+            "instanceMemoryMB": 2048,
             "httpConcurrency": 16
           },
           "config2": {
-            "instanceMemoryMB": 2048,
+            "instanceMemoryMB": 4096,
             "httpConcurrency": 16
           }
         }
diff --git a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/CreateOrUpdateTestProfileRun.json b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/CreateOrUpdateTestProfileRun.json
index d0765c4ddf08..ee0823ffc42e 100644
--- a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/CreateOrUpdateTestProfileRun.json
+++ b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/CreateOrUpdateTestProfileRun.json
@@ -26,11 +26,11 @@
           "kind": "FunctionsFlexConsumption",
           "configurations": {
             "config1": {
-              "instanceMemoryMB": 512,
+              "instanceMemoryMB": 2048,
               "httpConcurrency": 16
             },
             "config2": {
-              "instanceMemoryMB": 2048,
+              "instanceMemoryMB": 4096,
               "httpConcurrency": 16
             }
           }
diff --git a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/GetTestProfile.json b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/GetTestProfile.json
index de3ccfec49b7..6b39216ab1be 100644
--- a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/GetTestProfile.json
+++ b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/GetTestProfile.json
@@ -17,11 +17,11 @@
           "kind": "FunctionsFlexConsumption",
           "configurations": {
             "config1": {
-              "instanceMemoryMB": 512,
+              "instanceMemoryMB": 2048,
               "httpConcurrency": 16
             },
             "config2": {
-              "instanceMemoryMB": 2048,
+              "instanceMemoryMB": 4096,
               "httpConcurrency": 16
             }
           }
diff --git a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/GetTestProfileRun_Executed.json b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/GetTestProfileRun_Executed.json
index 2dbfe73ad54f..a6695a3d9075 100644
--- a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/GetTestProfileRun_Executed.json
+++ b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/GetTestProfileRun_Executed.json
@@ -21,11 +21,11 @@
           "kind": "FunctionsFlexConsumption",
           "configurations": {
             "config1": {
-              "instanceMemoryMB": 512,
+              "instanceMemoryMB": 2048,
               "httpConcurrency": 16
             },
             "config2": {
-              "instanceMemoryMB": 2048,
+              "instanceMemoryMB": 4096,
               "httpConcurrency": 16
             }
           }
diff --git a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/GetTestProfileRun_Executing.json b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/GetTestProfileRun_Executing.json
index 25756f76a81f..f30557620b8d 100644
--- a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/GetTestProfileRun_Executing.json
+++ b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/GetTestProfileRun_Executing.json
@@ -19,11 +19,11 @@
           "kind": "FunctionsFlexConsumption",
           "configurations": {
             "config1": {
-              "instanceMemoryMB": 512,
+              "instanceMemoryMB": 2048,
               "httpConcurrency": 16
             },
             "config2": {
-              "instanceMemoryMB": 2048,
+              "instanceMemoryMB": 4096,
               "httpConcurrency": 16
             }
           }
diff --git a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/ListTestProfileRuns.json b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/ListTestProfileRuns.json
index 78af0f0b7ad3..76e1cf9ef561 100644
--- a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/ListTestProfileRuns.json
+++ b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/ListTestProfileRuns.json
@@ -29,11 +29,11 @@
               "kind": "FunctionsFlexConsumption",
               "configurations": {
                 "config1": {
-                  "instanceMemoryMB": 512,
+                  "instanceMemoryMB": 2048,
                   "httpConcurrency": 16
                 },
                 "config2": {
-                  "instanceMemoryMB": 2048,
+                  "instanceMemoryMB": 4096,
                   "httpConcurrency": 16
                 }
               }
diff --git a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/ListTestProfiles.json b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/ListTestProfiles.json
index fcf359be1f1a..ac5476e50ba6 100644
--- a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/ListTestProfiles.json
+++ b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/ListTestProfiles.json
@@ -23,11 +23,11 @@
               "kind": "FunctionsFlexConsumption",
               "configurations": {
                 "config1": {
-                  "instanceMemoryMB": 512,
+                  "instanceMemoryMB": 2048,
                   "httpConcurrency": 16
                 },
                 "config2": {
-                  "instanceMemoryMB": 2048,
+                  "instanceMemoryMB": 4096,
                   "httpConcurrency": 16
                 }
               }
diff --git a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/StopTestProfileRun.json b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/StopTestProfileRun.json
index 0837614fbd0d..57ab06f4caf8 100644
--- a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/StopTestProfileRun.json
+++ b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/examples/StopTestProfileRun.json
@@ -21,11 +21,11 @@
           "kind": "FunctionsFlexConsumption",
           "configurations": {
             "config1": {
-              "instanceMemoryMB": 512,
+              "instanceMemoryMB": 2048,
               "httpConcurrency": 16
             },
             "config2": {
-              "instanceMemoryMB": 2048,
+              "instanceMemoryMB": 4096,
               "httpConcurrency": 16
             }
           }
diff --git a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/loadtestservice.json b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/loadtestservice.json
index b0cdb8ed7c12..38839ab8327d 100644
--- a/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/loadtestservice.json
+++ b/specification/loadtestservice/data-plane/Microsoft.LoadTestService/preview/2024-05-01-preview/loadtestservice.json
@@ -2584,7 +2584,7 @@
         "instanceMemoryMB": {
           "type": "integer",
           "format": "int64",
-          "description": "Memory size of the instance. Supported values are 512, 2048, 2096."
+          "description": "Memory size of the instance. Supported values are 2048, 4096."
         },
         "httpConcurrency": {
           "type": "integer",
@@ -2604,7 +2604,7 @@
         "instanceMemoryMB": {
           "type": "integer",
           "format": "int64",
-          "description": "Memory size of the instance. Supported values are 512, 2048, 2096."
+          "description": "Memory size of the instance. Supported values are 2048, 4096."
         },
         "httpConcurrency": {
           "type": "integer",