AssemblyAI
Voice AI APIs · Freemium
About
Speech AI APIs for transcription, speaker detection, summaries and audio intelligence.
Key features
- Speech-to-text
- Speaker diarisation
- Summaries and topic detection
- Streaming
Best for
- — Developers transcribing recordings
- — Call analytics
- Pricing
- Freemium
- Platforms
- API
- Last checked
- 2026-10-29
- Status
- Listed, not yet tested
Our take
Well-documented and accurate. Per-hour pricing needs monitoring at volume.
Features and pricing change often — confirm on assemblyai.com before you commit.
Alternatives to AssemblyAI
| Tool | Type | Pricing | Best for |
|---|---|---|---|
| AssemblyAI (this) | Voice AI APIs | Freemium | Developers transcribing recordings |
| Cartesia | Voice AI APIs | Freemium | Real-time voice agents |
| Deepgram | Voice AI APIs | Freemium | Real-time transcription in apps |
| 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 |