INTRODUCING UNIVERSAL-2

Next-gen Speech AI for next-level product experiences

Our most advanced speech-to-text model captures finite conversation complexities for audio data that delivers sharper insights, faster workflows, and best-in-class product experiences.

Universal-2

Leading the industry—again and again

Universal-2 builds on the strengths of Universal-1 with even greater precision, accuracy, and detail recognition—for audio data that doesn’t need double checking.

Universal-2
Universal-1
OpenAI
Microsoft
Deepgram
Amazon
Google
80%
85%
90%
95%
Metric
AssemblyAI
Universal-2
AssemblyAI
Universal-1
OpenAI
Whisper Large-v3
Microsoft
Azure Batch v3.1
Deepgram
Nova-2
Amazon
Google
Latest-long
Word accuracy rate
93.32%
93.12%
91.67%
91.18%
90.76%
89.66%
85.16%

Built on top of the best—then made even better

Accuracy is more than just the right words—it’s trust in your data. Universal-2 lets users spend less time filling in the gaps and more time putting insight into action.

WHAT’S IMPROVED

Proper nouns

A 24% improvement in the recognition of rare words like names, brands, locations, and more for personalized customer-facing communications, intuitive automated systems, and cleaner integration processes.

Text formatting

A 15% improvement in transcript structure with proper punctuation and casing across things like emails, dates, and dollar amounts for faster information navigation and more natural transcripts in customer products.

Alphanumerics

A 21% increase in accuracy across critical data like phone numbers, zip codes, and other numerical identifiers for smoother customer experiences, better critical data management, and clearer escalation and reporting.

Universal-2 captures real-world complexity

With reduced word-error rates in 3 key areas.

Universal-2
Universal-1
Deepgram
OpenAI
Google
Amazon
Microsoft
*Truncated at 25% for visualization
Proper nouns
Text formatting
Alphanumerics
0%
5%
10%
15%
20%
25%
Metric
AssemblyAI
Universal-2
AssemblyAI
Universal-1
Deepgram
Nova-2
OpenAI
Whisper Large-v3
Microsoft
Azure Batch v3.1
Amazon
Google
Latest-long
Proper nouns (Jaro-Winkler Error Rate)
13.87%
18.17%
21.14%
20.76%
26.84%
37.57%
47.64%
Text formatting (Word error rate)
10.06%
11.77%
12.39%
12.14%
12.14%
14.47%
25.45%
Alphanumerics (Word error rate)
4.00%
5.06%
4.97%
3.80%
5.19%
6.24%
8.43%

It’s more than accurate—it’s the industry preference

Universal-2 is the most preferred model to date. Before that? Universal-1 took the cake. We’ve made a habit out of making models people love.

Universal-2
72.9%
Universal-1
25.8%
Neutral
1.2%
*Qualitative benchmarks from an unbiased, third-party evaluation.

The most reliable outputs in the industry

Universal-2 is closing the gap between transcription and true understanding, with 
best-in-breed audio data you can reliably stand on—and behind.

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Universal-2

Welcome to another edition of Traveler TV. Today we're at the Arthur Ravenel Jr Bridge, located here. It opened in 2005 and is currently the longest cable stayed bridge in the Western Hemisphere. The design features two diamond shaped towers that span the Cooper river and connect downtown Charleston with Mount Pleasant. The bicycle pedestrian paths provide unparalleled views of the harbor and is the perfect spot to catch a sunrise or sunset. To walk or bike the bridge, you can park on either the downtown side here or on the Mount Pleasant side in Memorial Waterfront Park. To learn more about the Arthur Ravenel Jr Bridge and other fun things to do in Charleston, South Carolina. Visit our website at travelerofcharleston.com or download our free mobile app exploring Charleston SC.

Universal-1

Welcome to another edition of Traveler TV. Today we're at the Arthur Ravenel JrJunior Bridge,. locatedLocated here., Itit opened in 2005 and is currently the longest cable stayed bridge in the Westernwestern Hemispherehemisphere. The design features two diamond shaped towers that span the Cooper river and connect downtown Charleston with Mount Pleasant. The bicycle pedestrian paths provide unparalleled views of the harbor and is the perfect spot to catch a sunrise or sunset. To walk or bike the bridge, you can park on either the downtown side here or on the Mount Pleasant side in Memorial Waterfront Parkpark. To learn more about the Arthur Ravenel JrJunior Bridge and other fun things to do in Charleston, South Carolina., Visitvisit our website at @travelerofcharleston.com or download our free mobile app exploring Charleston, SCSCT, our channel.

Deepgram

Welcome to another edition of Traveler TVTv. Today, we're at the Arthur RavenelRa JrJunior Bridge, located here. It opened in 2005 and is currently the longest cable stayedstay bridge in the Western Hemisphere. The design features two2 diamond shaped towers that span the Cooper riverRiver and connect downtown Charleston with Mount Pleasant. The bicycle or pedestrian paths provide unparalleled views of the harbor and is the perfect spot to catch a sunrise or sunset. To walk or bike the bridge, you can park on either the downtown side here or on themount Mountpleasant Pleasant side in Memorial Waterfrontwaterfront Parkpark. To learn more about the Arthur RavenelRaven JrJunior Bridge and other fun things to do in Charleston, South Carolina., Visitvisit our website at travelerofcharleston.traveler of charleston dot com or download our free mobile app, exploring Charlestoncharleston SCs. The


0:00 / 0:00
Universal-2

Saudi Arabia, Fiji, Tonga, Hong Kong and Bahrain. All these countries are using Austrian medical coding. For example, if you want to go to New Zealand, if you know Austrian medical coding, you can go New Zealand easily as a medical coder or clinical coder. So for example, if you want to go Singapore, but in Singapore they will use both ICD10CM and CPT and as well as Austrian medical coding. So now we can see how can I search job in Australia.

Universal-1

Saudi Arabia, Fiji, Tonga, Hong Kong and Bahrain. All these countries are using Austrianaustrian medical coding. For example, if you want to go to New Zealand, if you know Austrianaustrian medical coding, you can go New Zealand easily as a medical coder or clinical coder. So for example, if you want to go Singapore, but in Singapore they will use both ICD10CMICT ten, CM and CPT and as well as Austrianaustrian medical coding. So now we can see how can I searchset job in Australia.

Deepgram

Saudi the Arabia, FijiPh, Tonga, Hong Kong and Bahrain. All these countries are using AustrianMedical medical coding. For example, if you want to go to New Zealand,zealand. ifIf you know AustrianMedical medical coding, you can go New Zealandzealand easily. asA a medical codercode or clinical codercode. So for example, if you want to go Singapore, but in Singapore, they will use both, ICD10CMIct 10 Centimeters and CPTCpt, and as well as Austrianare still medical coding. So now we can see how can I searchsay jobJob in Australia.?

0:00 / 0:00
Universal-2

The flyovers by US Warplanes off North Korea's east coast over the weekend were an agreed move between South Korea and the United States. Two B1B Lancer bombers from Anderson Air Force Base in Guam and six F15C air superiority fighter jets from Okinawa's Kadena airbase flew in international airspace off North Korea's east coast for approximately three hours from Saturday night until early Sunday morning

Universal-1

The flyovers by USus Warplaneswarplanes off North Korea's east coast over the weekend were an agreed move between South Korea and the United States. Two B1BB one B Lancer bombers from Anderson Air Force Base in Guam and six F15Cf 15 C air superiority fighter jets from Okinawa's Kadena airbaseair Base  flew inan international airspace off North Korea's east coast for approximately three3 hours from Saturday night until early Sunday morning

Deepgram

The flyoversfly overs  by USUs Warplaneswarp planes off North Korea's east coast over the weekend were an a agreed move between South Korea and the United States. Two2B1 B1Blancer Lancer bombers from AndersonAndersen Air Forceforce Basebase inand Guam, and six6 F15Cf 15 sea air superiority fighter jets from Okinawa's KadenaCad airbasebase, flew in international airspace off North Korea's eastEast coastCoast for approximately three3 hours from Saturday night until early Sunday morning.

More on Universal 2

Research

Universal-2 is the latest milestone in AssemblyAI's mission to push the boundaries of Speech AI technology and unlock the full potential of voice data for all.

Explore our research

Playground

Access our production-ready Speech AI models for speech recognition, speaker detection, audio summarization, and more—all in our no-code playground.

Try our Playground

Pricing

Universal-2 is available as an API for developers to build applications and services. We offer pricing that scales with tiered payment options and custom volume discounts.

Get our pricing

Universal-2 is all-in-one

Our comprehensive system lets you build expertly, effortlessly on our developer-preferred API with leading Speech AI capabilities, built-in model updates, and tech that keeps you on the cutting edge.