diff --git a/mmv1/products/ces/App.yaml b/mmv1/products/ces/App.yaml
index 46943133dc80..c3d01618f04d 100644
--- a/mmv1/products/ces/App.yaml
+++ b/mmv1/products/ces/App.yaml
@@ -326,6 +326,14 @@ properties:
                 description: |-
                   The success threshold for semantic similarity. Must be an integer
                   between 0 and 4. Default is >= 3.
+              - name: semanticSimilarityChannel
+                type: String
+                description: |-
+                  The semantic similarity channel to use for evaluation.
+                  Possible values:
+                  SEMANTIC_SIMILARITY_CHANNEL_UNSPECIFIED
+                  TEXT
+                  AUDIO
   - name: globalInstruction
     type: String
     description: |-
diff --git a/mmv1/products/ces/AppVersion.yaml b/mmv1/products/ces/AppVersion.yaml
index 929fd2930560..f24c74cf27fd 100644
--- a/mmv1/products/ces/AppVersion.yaml
+++ b/mmv1/products/ces/AppVersion.yaml
@@ -706,6 +706,15 @@ properties:
                           The success threshold for semantic similarity. Must be an integer
                           between 0 and 4. Default is >= 3.
                         output: true
+                      - name: semanticSimilarityChannel
+                        type: String
+                        description: |-
+                          The semantic similarity channel to use for evaluation.
+                          Possible values:
+                          SEMANTIC_SIMILARITY_CHANNEL_UNSPECIFIED
+                          TEXT
+                          AUDIO
+                        output: true
           - name: globalInstruction
             type: String
             description: |-
diff --git a/mmv1/templates/terraform/samples/services/ces/ces_app_basic.tf.tmpl b/mmv1/templates/terraform/samples/services/ces/ces_app_basic.tf.tmpl
index 25ff40742c17..d2ecf6657c4c 100644
--- a/mmv1/templates/terraform/samples/services/ces/ces_app_basic.tf.tmpl
+++ b/mmv1/templates/terraform/samples/services/ces/ces_app_basic.tf.tmpl
@@ -94,6 +94,7 @@ resource "google_ces_app" "ces_app_basic" {
       turn_level_metrics_thresholds {
         semantic_similarity_success_threshold        = 3
         overall_tool_invocation_correctness_threshold = 1.0
+        semantic_similarity_channel                   = "TEXT"
       }
       expectation_level_metrics_thresholds {
         tool_invocation_parameter_correctness_threshold = 1.0
diff --git a/mmv1/third_party/terraform/services/ces/ces_app_test.go b/mmv1/third_party/terraform/services/ces/ces_app_test.go
index de760e95129f..beff00ebbaf9 100644
--- a/mmv1/third_party/terraform/services/ces/ces_app_test.go
+++ b/mmv1/third_party/terraform/services/ces/ces_app_test.go
@@ -150,6 +150,7 @@ resource "google_ces_app" "ces_app_basic" {
       turn_level_metrics_thresholds {
         semantic_similarity_success_threshold        = 3
         overall_tool_invocation_correctness_threshold = 1.0
+        semantic_similarity_channel                   = "TEXT"
       }
       expectation_level_metrics_thresholds {
         tool_invocation_parameter_correctness_threshold = 1.0
@@ -359,6 +360,7 @@ resource "google_ces_app" "ces_app_basic" {
       turn_level_metrics_thresholds {
         semantic_similarity_success_threshold        = 4
         overall_tool_invocation_correctness_threshold = 0.1
+        semantic_similarity_channel                   = "AUDIO"
       }
       expectation_level_metrics_thresholds {
         tool_invocation_parameter_correctness_threshold = 0.1