Best transcription API for long-form / batch audio
For long recordings processed in batch, per-minute cost dominates at volume: AssemblyAI Universal-3 Pro is the cheapest comparable API ($3.50/1000 min) with broad language support, while ElevenLabs Scribe v2 wins on raw accuracy when transcript quality outweighs spend. We hold no first-hand throughput (RTFx) measurement, so batch processing speed isn't ranked here. A light estimate from public pricing and accuracy benchmarks, not a first-hand batch test.
DefaultAssemblyAI Universal-3 ProgoedkoopsteAssemblyAI Universal-3 Prohoogste nauwkeurigheidElevenLabs Scribe v2
Provider offerings
| Offering | Price ($/1000 min) | WER | Langs | Latency | Capabilities |
|---|---|---|---|---|---|
| ElevenLabs Scribe v2ElevenLabs | 3.67 | 2.2% | 90 | 150 ms | diarizationtimestampsvocab |
| AssemblyAI Universal-3 ProAssemblyAI | 3.5 | 3.1% | 99 | 150 ms | diarizationtimestampsvocab |
| Deepgram Nova-3Deepgram | 4.3 | 5.2% | 50 | 300 ms | diarizationtimestampsvocab |
| Speechmatics EnhancedSpeechmatics | 6.7 | 4% | 70 | 500 ms | diarizationtimestampsvocab |
| OpenAI gpt-4o-transcribeOpenAI | 6 | 4% | — | — | — |
| Google Gemini 3 FlashGoogle | 1.92* | 2.9% | — | — | — |
* token-/credit-priced — the headline understates real per-unit cost, so it is excluded from the cheapest ranking.
Sources
- Artificial Analysis — Speech to Text2026-06-19
- Open ASR Leaderboard2026-06-19