AssemblyAI vs Suno
A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.
 AssemblyAI Audio |  Suno Audio | |
|---|---|---|
| Tagline | Speech-to-text API with diarisation, summarisation, and topic detection. | Text-to-song AI — full vocal tracks from a prompt. |
| Category | Audio | Audio |
| Pricing | Freemium· Pre-recorded Speech-to-Text API: $0.21 /hr · Universal-2: $0.15 /hr · Realtime Speech-to-Text API: $0.45 /hr · Universal-Streaming: $0.15 /hr · Universal-Streaming Multilingual: $0.15 /hr | Freemium· Free Plan: $0 · Pro Plan: $8 · Premier Plan: $24 |
| Model | Universal / Slam-1 | Suno v4 |
| Editorial score | 8.7 / 10 | 9.2 / 10 |
| Use cases | transcriptiondiarisationpodcast indexing | songwritingdemosbackground music |
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| Website | www.assemblyai.com | suno.com |
Pick AssemblyAI if
- ✅ High accuracy
- ✅ Strong streaming API
- ✅ Lots of post-processing features
- ✅ Excellent SDKs and docs
Pick Suno if
- ✅ Astonishing vocal quality
- ✅ Wide genre range
- ✅ Fast to iterate
- ✅ Lyric + instrumental generation in one tool