API Pricing

Simple billing for companies of all sizes

With our Pay-As-You-Go pricing, you'll always have full transparency over how much you're paying for our services.

Core Transcription



Access our production-ready AI models that can automatically convert audio files, video files, and live speech into text.

Powered by our new Conformer-1 model

Async transcription

Real-time transcription

Process multiple files & streams in parallel

State-of-the-art accuracy

Billed per second transcribed

Try the API for free

Audio Intelligence



*in addition to Core Transcription pricing

Build with AI models that can summarize speech, extract spoken topics, detect sentiment, and more. Powered by the latest breakthroughs in AI.


Sentiment Analysis

Entity Detection

PII Redaction

Content Moderation

Try the API for free

Frequently asked questions

Can I sign up for free?

Yes! You can use the API for free on a limited trial. Simply add a credit card to your account at any time to upgrade from the trial.

Do you offer volume discounts?

Absolutely! If you plan to send large volumes of audio and video content through our API, please reach out to us here to see if you qualify for a volume discount.

How fast does it take for audio and video files to process?

Files take around 25% of their duration to process. For example, a 20 minute audio or video file would take 5 minutes to process.

How does billing work?

Great question. Once you add a credit card and deposit funds into your account, your account's funds will be drained as you use the API.

How can I talk to someone?

Feel free to email us at support@assemblyai.com, or click the chat button in the bottom right corner of your browser to chat live with our API Support team!

What languages do you support?

We support over 12 languages and counting, including Global English (English and all of its accents).

Companies of all sizes trust AssemblyAI

Join them today.