From e4aa7ceded24165db971d75917688c02b1fa4775 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Fri, 8 May 2026 16:43:42 +0000
Subject: [PATCH] fix(voice): clean up turn variables when committing a user
 turn manually

Port of livekit/agents#5671 to agents-js.

Resets last final-transcript time, speech-start time, and last-speaking
time alongside the existing transcript/confidence/committed reset, and
ends any in-progress user_turn span (clearing collected STT request ids)
so the next speech starts a fresh span and metrics window.
---
 .changeset/clear-user-turn-cleanup.md |  5 +++++
 agents/src/voice/audio_recognition.ts | 10 ++++++++++
 2 files changed, 15 insertions(+)
 create mode 100644 .changeset/clear-user-turn-cleanup.md

diff --git a/.changeset/clear-user-turn-cleanup.md b/.changeset/clear-user-turn-cleanup.md
new file mode 100644
index 000000000..da37a8652
--- /dev/null
+++ b/.changeset/clear-user-turn-cleanup.md
@@ -0,0 +1,5 @@
+---
+'@livekit/agents': patch
+---
+
+fix(voice): clean up turn variables and end user_turn span when committing a user turn manually
diff --git a/agents/src/voice/audio_recognition.ts b/agents/src/voice/audio_recognition.ts
index 2584432bc..1cad3b474 100644
--- a/agents/src/voice/audio_recognition.ts
+++ b/agents/src/voice/audio_recognition.ts
@@ -1404,8 +1404,18 @@ export class AudioRecognition {
     this.audioInterimTranscript = '';
     this.audioPreflightTranscript = '';
     this.finalTranscriptConfidence = [];
+    this.lastFinalTranscriptTime = 0;
+    this.speechStartTime = undefined;
+    this.lastSpeakingTime = undefined;
     this.userTurnCommitted = false;
 
+    // end any in-progress user_turn span so the next speech starts a fresh one
+    if (this.userTurnSpan && this.userTurnSpan.isRecording()) {
+      this.userTurnSpan.end();
+    }
+    this.userTurnSpan = undefined;
+    this.sttRequestIds = [];
+
     const restartStt = async () => {
       const unlock = await this.sttLifecycleLock.lock();
       try {