Deepgram.

Purpose-built STT models with low-latency streaming and per-minute pricing.

Directory noteSTT-first vendor; strong on real-time and price.

Deepgram speech-to-text API overview

The four signals that usually narrow a speech-to-text shortlist first. Prices are the cheapest documented async tier; native billing units differ, so read the notes below.

Listed price$0.0043 / minPay-as-you-go information

Languages45+Approximate coverage

StreamingYesReal-time transcription

DiarizationYesSpeaker separation

Deepgram pricing, languages, and features

Everything else the directory currently tracks, kept in one clear spec sheet for comparison.

Company: Deepgram
Listed price: $0.0043 / minBilled per second. $0.0043/min is Nova-3 monolingual pre-recorded (batch), pay-as-you-go. Streaming and multilingual cost more (Nova-3 streaming ~$0.0077/min; Flux streaming higher).
Languages: 45Docs cite 45+ languages, with real-time code-switching across 10. No single fixed marketing total.
Real-time streaming: Yes
Speaker diarization: Yes
Free tier or trial: YesOne-time $200 credit, then pay-as-you-go. Not a perpetual free tier.
Models: Flux, Nova-3, Nova-2, Enhanced, Base

Pricing, languages, streaming, and diarization verified against Deepgram’s primary sources on 2026-08-27. Word error rate and latency are not yet measured.