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 |
|---|---|---|---|
| Universal-2 (async) | $0.15 | Pay As You Go | Free |
| Universal-3.5 Pro (async) | $0.21 | Growth | — |
| Universal-Streaming | $0.15 | — | — |
| Voice Agent API | $4.50 | — | — |
Which to pick
AssemblyAI — Building transcript features without training models.
Deepgram — Transcription inside your own product.
AssemblyAI checked 2026-09-04 · Deepgram checked 2026-09-04