AssemblyAI vs Deepgram
Both cover audio and data. AssemblyAI is the cheaper way in at —/mo .
Entry cost
AssemblyAI —/mo
Speech API with speaker labels and audio intelligence.
Free tier: yes · Billing: usage
Deepgram —/mo
Fast, cheap speech-to-text API with per-minute billing.
Free tier: yes · Billing: usage
Plan by plan
| AssemblyAI | Price | Deepgram | Price |
|---|---|---|---|
| Pre-recorded Speech-to-Text API - Universal-3.5 Pro | $0.21 | Pay As You Go | — |
| Pre-recorded Speech-to-Text API - Universal-2 | $0.15 | Growth | — |
| Realtime Speech-to-Text API - Universal-3.6 Pro Realtime | $0.45 | Enterprise | — |
| Realtime Speech-to-Text API - Universal-Streaming | $0.15 | — | — |
| Realtime Speech-to-Text API - Universal-Streaming Multilingual | $0.15 | — | — |
| Sync Speech-to-Text API - Sync API | $0.30 | — | — |
| Voice Agent API | $4.50 | — | — |
Which to pick
AssemblyAI — Building transcript features without training models.
Deepgram — Transcription inside your own product.
AssemblyAI checked 2026-10-06 · Deepgram checked 2026-10-11