From 2f23f2e39cf1469ac0fa2f85a1a1fd3eb19ffb4f Mon Sep 17 00:00:00 2001
From: filipi87 <filipi87@gmail.com>
Date: Mon, 26 Jan 2026 17:08:27 -0300
Subject: [PATCH 1/2] Fixed race condition in OpenAIRealtimeBetaLLMService that
 could cause an error when truncating the conversation.

---
 src/pipecat/services/openai_realtime_beta/openai.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/pipecat/services/openai_realtime_beta/openai.py b/src/pipecat/services/openai_realtime_beta/openai.py
index 128bcc93a..1199d8556 100644
--- a/src/pipecat/services/openai_realtime_beta/openai.py
+++ b/src/pipecat/services/openai_realtime_beta/openai.py
@@ -525,6 +525,14 @@ class OpenAIRealtimeBetaLLMService(LLMService):
         # note: ttfb is faster by 1/2 RTT than ttfb as measured for other services, since we're getting
         # this event from the server
         await self.stop_ttfb_metrics()
+
+        if self._current_audio_response and self._current_audio_response.item_id != evt.item_id:
+            logger.warning(
+                f"Received a new audio delta for an already completed audio response before receiving the BotStoppedSpeakingFrame."
+            )
+            logger.debug("Forcing previous audio response to None")
+            self._current_audio_response = None
+
         if not self._current_audio_response:
             self._current_audio_response = CurrentAudioResponse(
                 item_id=evt.item_id,

From 98fcfd7c91d6380436d4bacd89ed8c51922b343f Mon Sep 17 00:00:00 2001
From: filipi87 <filipi87@gmail.com>
Date: Mon, 26 Jan 2026 17:19:08 -0300
Subject: [PATCH 2/2] Adding changelog entry for the
 OpenAiRealtimeBetaLLMService fix.

---
 changelog/3567.fixed.md | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 changelog/3567.fixed.md

diff --git a/changelog/3567.fixed.md b/changelog/3567.fixed.md
new file mode 100644
index 000000000..92ecabeca
--- /dev/null
+++ b/changelog/3567.fixed.md
@@ -0,0 +1 @@
+- Fixed race condition in `OpenAIRealtimeBetaLLMService` that could cause an error when truncating the conversation.