AssemblyAI pricing
Speech API with speaker labels and audio intelligence.
Plans
| Plan | Price | Billing | Notes |
|---|---|---|---|
| Pre-recorded Speech-to-Text API - Universal-3.5 Pro | $0.21 | usage-based | Pay as you go |
| Pre-recorded Speech-to-Text API - Universal-2 | $0.15 | usage-based | Pay as you go |
| Realtime Speech-to-Text API - Universal-3.6 Pro Realtime | $0.45 | usage-based | Pay as you go |
| Realtime Speech-to-Text API - Universal-Streaming | $0.15 | usage-based | Pay as you go |
| Realtime Speech-to-Text API - Universal-Streaming Multilingual | $0.15 | usage-based | Pay as you go |
| Sync Speech-to-Text API - Sync API | $0.30 | usage-based | Pay as you go |
| Voice Agent API | $4.50 | usage-based | Pay as you go. Also listed as $0.075/min. |
Who it's for
Building transcript features without training models.
Price history
| Date | Plan | Was | Now | Change |
|---|---|---|---|---|
| 2026-10-06 | Pre-recorded Speech-to-Text API - Universal-3.5 Pro | — | $0.21 | new plan |
| 2026-10-06 | Pre-recorded Speech-to-Text API - Universal-2 | — | $0.15 | new plan |
| 2026-10-06 | Realtime Speech-to-Text API - Universal-3.6 Pro Realtime | — | $0.45 | new plan |
| 2026-10-06 | Realtime Speech-to-Text API - Universal-Streaming | — | $0.15 | new plan |
| 2026-10-06 | Realtime Speech-to-Text API - Universal-Streaming Multilingual | — | $0.15 | new plan |
| 2026-10-06 | Sync Speech-to-Text API - Sync API | — | $0.30 | new plan |
| 2026-10-06 | Universal-3.5 Pro | $0.21 | — | removed plan |
| 2026-10-06 | Universal-2 | $0.15 | — | removed plan |
| 2026-10-06 | Universal-3.6 Pro Realtime | $0.45 | — | removed plan |
| 2026-10-06 | Universal-Streaming | $0.15 | — | removed plan |
| 2026-10-06 | Universal-Streaming Multilingual | $0.15 | — | removed plan |
| 2026-10-06 | Sync API | $0.45 | — | removed plan |
| 2026-10-06 | Custom | — | — | removed plan |
| 2026-09-30 | Universal-3.5 Pro | — | $0.21 | new plan |
| 2026-09-30 | Universal-2 | — | $0.15 | new plan |
| 2026-09-30 | Universal-3.6 Pro Realtime | — | $0.45 | new plan |
| 2026-09-30 | Universal-3.5 Pro (Pre-recorded) | $0.21 | — | removed plan |
| 2026-09-30 | Universal-2 (Pre-recorded) | $0.15 | — | removed plan |
| 2026-09-30 | Universal-3.5 Pro Realtime | $0.45 | — | removed plan |
| 2026-09-21 | Universal-Streaming | — | $0.15 | new plan |
| 2026-09-21 | Universal-Streaming Multilingual | — | $0.15 | new plan |
| 2026-09-21 | Universal-Streaming (Realtime) | $0.15 | — | removed plan |
| 2026-09-21 | Universal-Streaming Multilingual (Realtime) | $0.15 | — | removed plan |
| 2026-09-13 | Universal-3.5 Pro (Pre-recorded) | — | $0.21 | new plan |
| 2026-09-13 | Universal-2 (Pre-recorded) | — | $0.15 | new plan |
| 2026-09-13 | Universal-3.5 Pro Realtime | — | $0.45 | new plan |
| 2026-09-13 | Universal-Streaming (Realtime) | — | $0.15 | new plan |
| 2026-09-13 | Universal-Streaming Multilingual (Realtime) | — | $0.15 | new plan |
| 2026-09-13 | Sync API | — | $0.45 | new plan |
| 2026-09-13 | Custom | — | — | new plan |
| 2026-09-13 | Universal-2 (async) | $0.15 | — | removed plan |
| 2026-09-13 | Universal-3.5 Pro (async) | $0.21 | — | removed plan |
| 2026-09-13 | Universal-Streaming | $0.15 | — | removed plan |
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