Pricing
AssemblyAI pricing
As assemblyai.com lists them, read 20 Sept 2026. The maker's own page has the final word.
| Plan | Billed and limits | Price |
|---|---|---|
| Free credits | $50 in audio credits · 5 new streaming connections per minute · 5 concurrent pre-recorded transcriptions | Free |
| Pay as you go — Universal-2 | Billed monthly based on actual usage; audio is prorated to the second · 99 languages · 200+ concurrent pre-recorded transcriptions | $0.15 a month |
| Pay as you go — Universal-3.5 Pro | Billed monthly based on actual usage; audio is prorated to the second · 18 languages · 200+ concurrent pre-recorded transcriptions | $0.21 a month |
| Pay as you go — Universal-Streaming | Billed monthly based on actual usage · 5 new streams per minute on free accounts · 100+ starting sessions per minute on paid accounts | $0.15 a month |
| Pay as you go — Universal-3.5 Pro Realtime | Billed monthly based on actual usage · 18 languages · 100+ starting sessions per minute on paid accounts | $0.45 a month |
| Free tier | Up to 185 hours pre-recorded transcription · up to 333 hours streaming transcription · 5 new streaming connections per minute | Free |
| Universal-Streaming | per hour of audio · English-only realtime transcription | $0.15 a month |
| Universal-2 | per hour of audio · 99 languages · lower-price speech-to-text model | $0.15 a month |
| Universal-Streaming Multilingual | per hour of audio · English, Spanish, German, French, Portuguese, and Italian | $0.15 a month |
| Universal-3.5 Pro | per hour of audio · 18 languages · custom rate limits available | $0.21 a month |
| Universal-3.6 Pro Realtime | per hour of audio · 32 languages · context carryover and conversation memory | $0.45 a month |
| Voice Agent API | per hour of connected conversation time · Managed orchestration and hosting · no per-layer add-ons or concurrency fees | $4.50 a month |
| Custom | Custom rate limits · enhanced concurrency · enterprise flexibility | On request |
From support.assemblyai.com, assemblyai.com, assemblyai.com.