Fact · Speech recognition
OpenAI's speech-to-text guide says its gpt-4o-transcribe-diarize model is for use only when you need to identify who speaks during different parts of a recording.
Checked against its source on October 17, 2026
In the source's own words
“Use gpt-4o-transcribe-diarize only when you need to identify who speaks during different parts of a recording.”
Speech to text (OpenAI API guide), OpenAI, OpenAI, 2026, Speaker diarization section.
Open the original- What it measures
- OpenAI's guide lists speaker labels as a reason to use a specialized model rather than the default transcription model. The guide's whisper-1 section describes that model's options separately.
- What it does not show
- The guide is for OpenAI's hosted API. It does not describe what the open-source Whisper model can or cannot do on your own computer.
Source
Cited on
- What Is Whisper AI? OpenAI's Speech Model ExplainedGuide
- How to Transcribe an Interview: Audio to TextGuide
- Timestamps and Speaker Labels in TranscriptsGuide
- Can Whisper identify different speakers?Question
- How do you prepare interview transcripts for qualitative analysis?Question
- How do you transcribe a podcast?Question
- How do you transcribe audio with multiple speakers?Question
- Which speech-to-text APIs can identify speakers?Question