What makes Universal-3 Pro 'promptable'?

Universal-3 Pro allows you to use a 'prompt' parameter to give the model instructions. You can tell it to 'be verbatim' to capture filler words like 'um' and 'uh', or 'focus on medical terms' to ensure clinical accuracy.

Does it support real-time transcription?

Yes, Universal-3 Pro Streaming is optimized for real-time applications like voice agents and live captioning, featuring very low latency and advanced turn detection.

How many languages are supported?

Universal-3 Pro supports 99+ languages for asynchronous transcription. For real-time streaming, it currently supports English, Spanish, French, German, Portuguese, and Italian.

Is Universal-3 Pro HIPAA compliant?

Yes, AssemblyAI maintains strict security standards including HIPAA compliance, SOC 2 Type 2, and ISO 27001, making it suitable for healthcare and finance.

What is the difference between Universal-3 and Universal-3 Pro?

Universal-3 Pro is the flagship model that adds prompting capabilities, allowing for higher accuracy in specialized domains and more control over the output format compared to the standard model.

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Transcription

Freemium

Universal-3 Pro by AssemblyAI

A promptable speech language model for voice AI that follows natural language instructions for high-accuracy transcription, domain-specific jargon, and real-time streaming.

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Rating

Reviews

Upvotes

6 months ago

Listed

Transcription

Speech-to-Text

Voice AI

Real-time Streaming

Medical Transcription

Diarization

Sentiment Analysis

Promptable AI

Multilingual

Audio Intelligence

Tool information

Provider

AssemblyAI

Platforms

Web

API

Cloud

Languages

English

Spanish

French

German

Portuguese

Italian

Multilingual (99+ languages via async)

API Available

Yes

Added to directory

6 months ago

Last updated

3 months ago

Rating

Not available

Pricing

Freemium

About Universal-3 Pro by AssemblyAI

What the tool does and who it's for

Universal-3 Pro is a next-generation, promptable speech-to-text model designed for high-accuracy transcription and voice AI applications. Unlike traditional ASR models, Universal-3 Pro is 'promptable,' allowing users to provide natural language instructions to guide the transcription style, such as requesting verbatim outputs with disfluencies (um, uh), enforcing specific domain terminology, or handling code-switching between languages. It features near-human accuracy, industry-leading word error rates (WER), and a specialized 'Medical Mode' for clinical terminology. The model is available for both asynchronous (pre-recorded) audio processing and real-time streaming with ultra-low latency.

Key capabilities

Promptable Accuracy: Guide transcription style and formatting using natural language instructions.

Real-time Streaming: Industry-leading low latency (~300ms) with native turn detection for voice agents.

Medical Mode: Specialized optimization for clinical terminology and healthcare conversations.

Keyterm Prompting: Boost accuracy for up to 1,000 domain-specific terms, product names, or jargon.

Speaker Diarization: High-accuracy speaker labeling and turn-taking detection.

Code-Switching Support: Seamlessly transcribes bilingual conversations as they happen.

Speech Understanding: Built-in sentiment analysis, entity detection, and auto-chapters.

PII Redaction: Automatically identifies and removes sensitive personal information from transcripts.

Disfluency Control: Toggle between 'clean' text and 'verbatim' captures including filler words.

Developer SDKs: Robust support for Python, JavaScript, Ruby, and other major languages.

Pricing

Freemium — plans below

Free Tier

Playground access for testing
$50 in free credits upon sign-up
No credit card required to start

Pay-as-you-go (Async)

Streaming

$0.45/hr

Real-time Universal-3 Pro Streaming
Ultra-low latency (~300ms)
Prompting for live streams
Native turn detection

Enterprise

Contact sales

Custom rate limits
Enhanced concurrency
Enterprise-grade flexibility
Dedicated engineering support

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