Deepgram
Voice AI APIs · Freemium
About
Speech-to-text, text-to-speech and voice-agent APIs for developers, with real-time streaming.
Key features
- Streaming speech-to-text
- Text-to-speech
- Voice agent API
- Diarisation
Best for
- — Real-time transcription in apps
- — Voice agent backends
- Pricing
- Freemium
- Platforms
- API
- Last checked
- 2026-10-29
- Status
- Listed, not yet tested
Our take
Fast and accurate at scale. Requires engineering work to integrate.
Features and pricing change often — confirm on deepgram.com before you commit.
Alternatives to Deepgram
| Tool | Type | Pricing | Best for |
|---|---|---|---|
| Deepgram (this) | Voice AI APIs | Freemium | Real-time transcription in apps |
| Cartesia | Voice AI APIs | Freemium | Real-time voice agents |
| AssemblyAI | Voice AI APIs | Freemium | Developers transcribing recordings |
| ElevenLabs | Text-to-speech | Freemium | Voice-overs for videos |
| Suno | Music generation | Freemium | Background music drafts |
| Descript | Audio editing | Freemium | Podcast editing |
| Otter.ai | Transcription & meeting notes | Freemium | Meeting transcription |