diff --git a/homeassistant/components/assist_pipeline/pipeline.py b/homeassistant/components/assist_pipeline/pipeline.py
index 34f590574d4..93e857f4b2b 100644
--- a/homeassistant/components/assist_pipeline/pipeline.py
+++ b/homeassistant/components/assist_pipeline/pipeline.py
@@ -1207,6 +1207,15 @@ class PipelineRun:
 
                 self._streamed_response_text = True
 
+                self.process_event(
+                    PipelineEvent(
+                        PipelineEventType.INTENT_PROGRESS,
+                        {
+                            "tts_start_streaming": True,
+                        },
+                    )
+                )
+
                 async def tts_input_stream_generator() -> AsyncGenerator[str]:
                     """Yield TTS input stream."""
                     while (tts_input := await tts_input_stream.get()) is not None:
diff --git a/tests/components/assist_pipeline/snapshots/test_pipeline.ambr b/tests/components/assist_pipeline/snapshots/test_pipeline.ambr
index 8431e32ed87..7f760d069e6 100644
--- a/tests/components/assist_pipeline/snapshots/test_pipeline.ambr
+++ b/tests/components/assist_pipeline/snapshots/test_pipeline.ambr
@@ -309,6 +309,12 @@
       }),
       'type': <PipelineEventType.INTENT_PROGRESS: 'intent-progress'>,
     }),
+    dict({
+      'data': dict({
+        'tts_start_streaming': True,
+      }),
+      'type': <PipelineEventType.INTENT_PROGRESS: 'intent-progress'>,
+    }),
     dict({
       'data': dict({
         'chat_log_delta': dict({
@@ -471,6 +477,12 @@
       }),
       'type': <PipelineEventType.INTENT_PROGRESS: 'intent-progress'>,
     }),
+    dict({
+      'data': dict({
+        'tts_start_streaming': True,
+      }),
+      'type': <PipelineEventType.INTENT_PROGRESS: 'intent-progress'>,
+    }),
     dict({
       'data': dict({
         'chat_log_delta': dict({