diff --git a/openvidu-testapp/src/app/components/dialogs/events-dialog/events-dialog.component.ts b/openvidu-testapp/src/app/components/dialogs/events-dialog/events-dialog.component.ts
index 1ab109bf0..cebb326f6 100644
--- a/openvidu-testapp/src/app/components/dialogs/events-dialog/events-dialog.component.ts
+++ b/openvidu-testapp/src/app/components/dialogs/events-dialog/events-dialog.component.ts
@@ -6,11 +6,17 @@ import { MatSlideToggleModule } from '@angular/material/slide-toggle';
 import { MatDividerModule } from '@angular/material/divider';
 import { MatButtonModule } from '@angular/material/button';
 
+export interface ExtraToggle {
+    label: string;
+    checked: boolean;
+}
+
 export interface EventGroup {
     label: string;
     eventCollection: Map<string, boolean>;
     eventArray: string[];
     checkAll: boolean;
+    extraToggles?: ExtraToggle[];
 }
 
 @Component({
@@ -48,6 +54,18 @@ export interface EventGroup {
                 }
               </div>
             </div>
+            @if (group.extraToggles && group.extraToggles.length > 0) {
+              <mat-divider></mat-divider>
+              @for (extraToggle of group.extraToggles; track extraToggle.label) {
+                <div class="toggle extra-toggle">
+                  <mat-slide-toggle
+                    [(ngModel)]="extraToggle.checked"
+                    [name]="extraToggle.label"
+                    color="warn">{{extraToggle.label}}
+                  </mat-slide-toggle>
+                </div>
+              }
+            }
           }
         </mat-dialog-content>
         <mat-dialog-actions>
@@ -60,7 +78,8 @@ export interface EventGroup {
         '.col-50 {flex-basis: 50%; box-sizing: border-box; padding-left: 20px; }',
         '.toggle { }',
         '.group-label { margin-top: 15px; margin-bottom: 5px; }',
-        '.group-label:first-child { margin-top: 0; }'
+        '.group-label:first-child { margin-top: 0; }',
+        '.extra-toggle { margin-top: 5px; }'
     ],
     imports: [SlicePipe, FormsModule, MatDialogModule, MatSlideToggleModule, MatDividerModule, MatButtonModule],
 })
@@ -76,11 +95,12 @@ export class EventsDialogComponent {
         const data = this.dialogData;
         this.target = data.target;
         if (data.eventGroups) {
-            this.eventGroups = data.eventGroups.map((g: { label: string; eventCollection: Map<string, boolean> }) => ({
+            this.eventGroups = data.eventGroups.map((g: { label: string; eventCollection: Map<string, boolean>; extraToggles?: ExtraToggle[] }) => ({
                 label: g.label,
                 eventCollection: g.eventCollection,
                 eventArray: Array.from(g.eventCollection.keys()),
                 checkAll: Array.from(g.eventCollection.values()).every(v => v),
+                extraToggles: g.extraToggles,
             }));
         } else {
             // Backward compatibility: single eventCollection
diff --git a/openvidu-testapp/src/app/components/openvidu-instance/openvidu-instance.component.ts b/openvidu-testapp/src/app/components/openvidu-instance/openvidu-instance.component.ts
index b59119a81..fb93a30f2 100644
--- a/openvidu-testapp/src/app/components/openvidu-instance/openvidu-instance.component.ts
+++ b/openvidu-testapp/src/app/components/openvidu-instance/openvidu-instance.component.ts
@@ -84,6 +84,10 @@ export class OpenviduInstanceComponent {
   participantEvents: Map<ParticipantEvent, boolean> = new Map<ParticipantEvent, boolean>();
   trackEvents: Map<TrackEvent, boolean> = new Map<TrackEvent, boolean>();
 
+  // When false, interim transcription events are not added to the event list
+  // (only final transcription events are rendered)
+  renderInterimTranscriptionEvents: boolean = true;
+
   private roomEventListeners: Map<string, (...args: any[]) => void> = new Map();
 
   // Early event registration: buffers events for participant/track components
@@ -1251,6 +1255,9 @@ export class OpenviduInstanceComponent {
             const message = await reader.readAll();
             const isFinal =
               reader.info.attributes!['lk.transcription_final'] === 'true';
+            if (!isFinal && !this.renderInterimTranscriptionEvents) {
+              return;
+            }
             this.updateEventList(
               isFinal
                 ? ('finalTranscription' as any)
@@ -1519,10 +1526,18 @@ export class OpenviduInstanceComponent {
     const oldRoomValues: Map<string, boolean> = new Map(
       JSON.parse(JSON.stringify([...this.roomEvents]))
     );
+    const interimTranscriptionToggle = {
+      label: 'Render interim transcription events',
+      checked: this.renderInterimTranscriptionEvents,
+    };
     const dialogRef = this.dialog.open(EventsDialogComponent, {
       data: {
         eventGroups: [
-          { label: 'RoomEvent', eventCollection: this.roomEvents },
+          {
+            label: 'RoomEvent',
+            eventCollection: this.roomEvents,
+            extraToggles: [interimTranscriptionToggle],
+          },
           { label: 'ParticipantEvent', eventCollection: this.participantEvents },
           { label: 'TrackEvent', eventCollection: this.trackEvents },
         ],
@@ -1534,6 +1549,7 @@ export class OpenviduInstanceComponent {
     });
 
     dialogRef.afterClosed().subscribe((result) => {
+      this.renderInterimTranscriptionEvents = interimTranscriptionToggle.checked;
       if (
         !!this.room &&
         JSON.stringify(Array.from(this.roomEvents.entries())) !==