Deepgram
Fast, low-latency speech-to-text and text-to-speech API built for real-time streaming and voice agents, with free starter credits.
Deepgram is listed in AI & ML.
Key metrics
Free tier Rate limit Free tier, no credit card: $200 in credits (~45,000 minutes of transcription); pay-as-you-go after.
SDK SDK
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Key required
Requires an API key (free to obtain) before use.
speech-to-text text-to-speech real-time voice-agents free-tier