AssemblyAI pricing

Free credits

$50 in audio credits · 5 new streaming connections per minute · 5 concurrent pre-recorded transcriptions

Read 20 Sep 2026 · support.assemblyai.com

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

Read 20 Sep 2026 · assemblyai.com

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

Read 20 Sep 2026 · assemblyai.com

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

Read 20 Sep 2026 · assemblyai.com

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

Read 20 Sep 2026 · assemblyai.com

Free tier

Up to 185 hours pre-recorded transcription · up to 333 hours streaming transcription · 5 new streaming connections per minute

Read 1 Oct 2026 · assemblyai.com

Universal-Streaming

per hour of audio

English-only realtime transcription

Read 1 Oct 2026 · assemblyai.com

Universal-2

per hour of audio

99 languages · lower-price speech-to-text model

Read 1 Oct 2026 · assemblyai.com

Universal-Streaming Multilingual

per hour of audio

English, Spanish, German, French, Portuguese, and Italian

Read 1 Oct 2026 · assemblyai.com

Universal-3.5 Pro

per hour of audio

18 languages · custom rate limits available

Read 1 Oct 2026 · assemblyai.com

Universal-3.6 Pro Realtime

per hour of audio

32 languages · context carryover and conversation memory

Read 1 Oct 2026 · assemblyai.com

Voice Agent API

per hour of connected conversation time

Managed orchestration and hosting · no per-layer add-ons or concurrency fees

Read 1 Oct 2026 · assemblyai.com

Custom

Custom rate limits · enhanced concurrency · enterprise flexibility

Read 1 Oct 2026 · assemblyai.com