Prompt
What API should I use if I need low latency transcription for a customer support tool?
Latest observation
Oct 11, 2026
OpenAI APIWeb search: off
If you need low-latency transcription for a customer support tool, use a streaming speech-to-text API rather than a batch transcription endpoint.
Best fit
- Real-time / streaming transcription API
- Sends audio chunks continuously and returns partial transcripts quickly.
- Best for live agent assist, call center notes, and live captions.
What to look for
- WebSocket or gRPC streaming
- Partial/interim results with low delay
- Speaker diarization if you need to separate agent vs customer
- Punctuation and casing
- Good telecom audio support (8kHz/phone calls)
- Noise robustness and domain customization
Common options
- OpenAI Realtime API or other streaming speech APIs for live conversational use cases
- Google Cloud Speech-to-Text streaming
- Deepgram streaming transcription
- AssemblyAI streaming
- AWS Transcribe Streaming
Recommendation
For a customer support tool, I’d typically choose:
- Deepgram or Google Cloud Speech-to-Text streaming for production call transcription
- OpenAI Realtime API if you also want AI-driven live assistance, not just transcription
If you want, I can help you choose based on:
- phone calls vs browser mic,
- budget, and
- whether you need live agent-assist or just transcription.