AssemblyAI vs Suno
Both cover audio. Suno is the cheaper way in at $8/mo .
Entry cost
AssemblyAI —/mo
Speech API with speaker labels and audio intelligence.
Free tier: yes · Billing: usage
Suno $8/mo
Full songs — vocals, instruments, structure — from a prompt.
Free tier: yes · Billing: seat
Plan by plan
| AssemblyAI | Price | Suno | Price |
|---|---|---|---|
| Pre-recorded Speech-to-Text API - Universal-3.5 Pro | $0.21 | Free | Free |
| Pre-recorded Speech-to-Text API - Universal-2 | $0.15 | Pro | $8 |
| Realtime Speech-to-Text API - Universal-3.6 Pro Realtime | $0.45 | Premier | $24 |
| 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.
Suno — Original background music you can licence for content.
AssemblyAI checked 2026-10-06 · Suno checked 2026-10-14