diff --git a/core/duplex_pipeline.py b/core/duplex_pipeline.py
index 299f8aa..b80cc36 100644
--- a/core/duplex_pipeline.py
+++ b/core/duplex_pipeline.py
@@ -669,6 +669,12 @@ class DuplexPipeline:
                 await self._current_turn_task
             except asyncio.CancelledError:
                 pass
+
+        # Ensure underlying services are cancelled to avoid leaking work/audio
+        if self.tts_service:
+            await self.tts_service.cancel()
+        if self.llm_service and hasattr(self.llm_service, 'cancel'):
+            self.llm_service.cancel()
         
         self._is_bot_speaking = False
         self._interrupt_event.clear()