From ba94d8c2b0bb67c55fb42f101bd1e2508536727e Mon Sep 17 00:00:00 2001 From: Tanmay Deep Sharma Date: Fri, 1 May 2026 16:31:48 +0700 Subject: [PATCH] fix(transcription): drop Whisper temperature to 0 to suppress hallucinations --- .../app/services/messages/audio_transcription_service.rb | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/enterprise/app/services/messages/audio_transcription_service.rb b/enterprise/app/services/messages/audio_transcription_service.rb index 0e574cb03..3c37df142 100644 --- a/enterprise/app/services/messages/audio_transcription_service.rb +++ b/enterprise/app/services/messages/audio_transcription_service.rb @@ -67,7 +67,9 @@ class Messages::AudioTranscriptionService< Llm::LegacyBaseOpenAiService parameters: { model: WHISPER_MODEL, file: file, - temperature: 0.4 + # 0.0 minimises Whisper's hallucinations on silence / sub-vocal segments — + # higher temperatures produce phantom phrases that look like real transcripts. + temperature: 0.0 } ) transcribed_text = response['text']