Voice Agents & Speech/AudioPublicPricing under review

AssemblyAI Pricing

AssemblyAI · Voice Agents & Speech/Audio

Speech AI platform for developers — long-form audio transcription, speaker diarization, and Universal-2 speech understanding models. Usage-based pricing: Best model at $0.37/hr audio, Nano tier at $0.12/hr. Pay-as-you-go with $50 free credit. Popular with podcast platforms, meeting recorders, and companies building on top of long-form audio.

In other words, AssemblyAI is worth it for developers processing long-form audio at scale — podcasts, recorded meetings, call recordings. The per-hour pricing works out cheaper than Deepgram for batch transcription (as opposed to real-time streaming). Universal-2 model quality is competitive with Whisper Large-V3. Downside: not the fastest for real-time streaming (Deepgram wins there), and text-to-speech is not their focus.

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Pricing summary

Starting price

$0 / month

No monthly fees

Pricing model

Per Usage

Pay as you go

Key limit

Varies by plan

Depends on tier

Free trial

Not applicable

Pricing verified for United States.View full pricing details on AssemblyAI's website

Machine-readable pricing: pricing.md ↓

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Alternatives to consider

Real-time voice agents? Deepgram or Vapi. Text-to-speech-first? ElevenLabs. Just need meeting summaries? Fireflies or Otter.

All plans

See a plain-English answer to “How much does AssemblyAI cost?” →

Plan	Monthly	Annual	Key limit
Pay-as-you-go: Universal-2 (async)	Free	Free	$0.15/hr, $50 free credit to start
Pay-as-you-go: Universal-3.5 Pro (async)	Free	Free	$0.21/hr
Streaming (Universal-3.5 Pro Realtime)	Free	Free	$0.45/hr
Sync API	Free	Free	$0.45/hr
Voice Agent API	Free	Free	$4.50/hr flat
Enterprise	Custom	Custom	volume pricing, dedicated support, private deployment
Add-ons: speaker diarization +$0.02/hr async, keyterms prompting +$0.05/hr, Medical Mode +$0.15/hr	—	—	—

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Price history

Price tracking is just getting started for AssemblyAI. Full history will build as we log changes. See what we have so far →

Common questions about AssemblyAI

Is AssemblyAI worth it?: AssemblyAI is worth it for developers processing long-form audio at scale — podcasts, recorded meetings, call recordings. The per-hour pricing works out cheaper than Deepgram for batch transcription (as opposed to real-time streaming).
What are the pricing tiers of AssemblyAI?: AssemblyAI has 7 plans: Pay-as-you-go: Universal-2 (async) (free), Pay-as-you-go: Universal-3.5 Pro (async) (free), Streaming (Universal-3.5 Pro Realtime) (free), Sync API (free), Voice Agent API (free), Enterprise (custom), Add-ons: speaker diarization +$0.02/hr async, keyterms prompting +$0.05/hr, Medical Mode +$0.15/hr (free).
How is AssemblyAI priced — per usage or subscription?: AssemblyAI is priced per usage. You pay for what you consume, not per seat.

Frequently asked questions

About AssemblyAI pricing.

Speech AI platform for developers — long-form audio transcription, speaker diarization, and Universal-2 speech understanding models. Usage-based pricing: Best model at $0.37/hr audio, Nano tier at $0.12/hr. Pay-as-you-go with $50 free credit. Popular with podcast platforms, meeting recorders, and companies building on top of long-form audio. Real all-in cost may be higher depending on downstream models, telephony, or storage — see the full pricing breakdown on this page.

Yes. AssemblyAI has a Pay-as-you-go: Universal-2 (async) tier — $0.15/hr, $50 free credit to start. Usage beyond that cap is billed at the standard per usage rate.

AssemblyAI is priced per usage. There is no fixed seat fee — you are billed per credit consumed.

See side-by-side comparisons with Real-time voice agents and Fireflies or Otter on saaspricehub.io. Note that AssemblyAI bills on usage, so total cost depends on volume rather than seat count — normalise both tools to your expected monthly usage before comparing.

No pricing changes recorded in the last 6 months of tracking.

Alternatives in Voice Agents & Speech/Audio (13)

See how AssemblyAI compares to other Voice Agents & Speech/Audio tools we track. Vendor-sourced prices; check each tool page for its verification date.