Prompt
speaker diarization api
Latest observation
Oct 11, 2026
OpenAI APIWeb search: off
If you want a speaker diarization API, here are the main options depending on your needs:
Popular hosted APIs
- AssemblyAI — easy to use, good diarization support
- Deepgram — real-time + batch transcription with diarization
- Speechmatics — strong multilingual support
- Google Cloud Speech-to-Text — has speaker diarization
- AWS Transcribe — supports speaker labels
- Azure Speech to Text — speaker diarization / conversation transcription
- Rev AI — transcription with diarization
Open-source / self-hosted
- pyannote.audio — one of the best open-source diarization toolkits
- Whisper + pyannote — common combo for transcription + diarization
- NVIDIA NeMo — strong research-grade toolkit
If you want to build it yourself
A typical pipeline is:
- VAD (voice activity detection)
- Speaker embedding extraction
- Clustering to group speaker segments
- Optional ASR for transcript alignment
Quick recommendation
- Fastest to integrate: AssemblyAI or Deepgram
- Best open-source: pyannote.audio
- Enterprise/cloud: Google, AWS, Azure
If you want, I can also give you:
- a comparison table,
- sample API code, or
- the best API for your specific use case.