diff --git a/proto/speechly/analytics/v1/analytics.proto b/proto/speechly/analytics/v1/analytics.proto
index 8029462..00f9d6c 100644
--- a/proto/speechly/analytics/v1/analytics.proto
+++ b/proto/speechly/analytics/v1/analytics.proto
@@ -30,7 +30,7 @@ message UtteranceStatisticsPeriod {
     int32 utterances_seconds = 5;
     // Total duration of annotated utterances in the current period.
     int32 annotated_seconds = 6;
-    // project_id or empty, if specifiying a project.
+    // project_id or empty, if specifying a project.
     string project_id = 7;
 }
 
@@ -53,3 +53,24 @@ message DecoderInfo {
     // Cumulative sum of the utterance length in seconds for the decoder.
     int32 total_seconds_transcribed = 3;
 }
+
+// The various types of processing that can be applied to the audio.
+enum ProcessingType {
+    PROCESSING_TYPE_INVALID = 0;
+    PROCESSING_TYPE_TRANSCRIPTION = 1;
+    PROCESSING_TYPE_NLU = 2;
+    PROCESSING_TYPE_LANGUAGE_DETECTION = 3;
+    PROCESSING_TYPE_VAD = 4;
+    PROCESSING_TYPE_TRANSLATION = 5;
+    PROCESSING_TYPE_AUDIO_EVENT_DETECTION = 6;
+    PROCESSING_TYPE_TONE_OF_VOICE_LABELLING = 7;
+    PROCESSING_TYPE_SHALLOW_FUSION = 8;
+}
+
+// Specifies what processing has been applied to an utterance.
+message ProcessingInfo {
+    // The processing types that were applied
+    repeated ProcessingType processing_types = 1;
+    // id of the model that was used for processing
+    string model_id = 2;
+}
diff --git a/proto/speechly/analytics/v1/analytics_api.proto b/proto/speechly/analytics/v1/analytics_api.proto
index d15991e..7bc132d 100644
--- a/proto/speechly/analytics/v1/analytics_api.proto
+++ b/proto/speechly/analytics/v1/analytics_api.proto
@@ -96,6 +96,7 @@ message UtterancesResponse {
 
 // A single data point of an utterance recognized by Speechly On Device or Speechly On Premise.
 message RegisterUtteranceRequest {
+    // id of the application the operation belongs to
     string app_id = 1;
     // device_id of the utterance.
     string device_id = 2;
@@ -124,6 +125,12 @@ message RegisterUtteranceRequest {
     string operation_id = 9;
     // id of the batch the operation belongs to
     string batch_id = 10;
+    // id of the project the operation belongs to
+    string project_id = 11;
+    // language of the utterance (BCP-47)
+    string language = 12;
+    // Information about the processing applied to the utterance
+    ProcessingInfo processing_info = 13;
 }
 
 message RegisterUtteranceResponse {