Deepgram vs. AssemblyAI
Learn why customers choose AssemblyAI to build powerful Voice AI apps that exceed industry standards.
• Best-in-class Voice AI infrastructure
• Unlimited concurrency without hidden costs
• No commitments or minimums
At a glance: Deepgram vs. AssemblyAI
The most accurate speech-to-text models on the market with top performance rankings across Word Error Rate and Missed Entity Rate.
Feature | AssemblyAI Universal-3 Pro | Deepgram Nova-3 |
|---|---|---|
Average Word Error Rate (WER) | 5.93% | 7.9% |
Missed Entity Rate - Medical Terms | 13.61% | 16.95% |
Missed Entity Rate - Locations | 8.26% | 13.94% |
Missed Entity Rate - Date & Time | 7.5% | 18.69% |
Usage-Based Pricing |  | Contract with spend minimums |
Promptable Speech Models | | X |
“The customer experience with our previous provider had significant room for improvement—the pricing model wasn't ideal for our needs, we encountered some concurrency constraints, and the customer service response times were longer than we hoped."
Go beyond Deepgram's limits with Assembly's full Voice AI Infrastructure.
Transcribe over 99+ languages and counting, including Global English (English and all of its accents).
Detect the number of speakers in your audio file and identify names and roles with Speaker Identification.
Automatically detect languages and route to the appropriate model for transcription.
Pay only for what you use with transparent per-second billing. No minimum commitments, annual contracts, or surprise infrastructure costs.
Detect and replace profanity in the transcription text with ease. Redact PII and request BAA for building HIPAA-eligible apps.
Deploy with confidence on infrastructure that processes millions of hours daily. Built for production scale with 99.9% uptime and SOC 2 compliance.
Best-in-class recognition of credit card numbers, emails, URLs, passwords, and account numbers.
Guide transcription behavior with natural language in batch and streaming mode. Start with our prompt templates to see what works best for your use case.
Join 200K+ developers building new experiences with voice data
"We have had a phenomenal experience so far. The integration was simple and easy for developers to get started. The accuracy is better than any other tools in the market (and we have tried them all). Highly recommend!"
"Works incredibly well out of the box. Allowed us to focus on product instead of infrastructure. As a result, we were able to bring a transformative new product to market in half the time."
"The accuracy was strong, but the great documentation and unique models like Auto Chapters and Sentiment Analysis is what really won us over."
"Partnering with AssemblyAI has made it easy for us to deliver world-class voice intelligence powered by market-leading speech-to-text technology."
We’re not playing around—but you can
Test our best-in-class speech-to-text and voice agent models in our no-code playground.
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