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AssemblyAI vs Microsoft Azure Speech Service comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

AssemblyAI
Ranking in Speech-To-Text Services
2nd
Average Rating
8.6
Reviews Sentiment
5.4
Number of Reviews
16
Ranking in other categories
No ranking in other categories
Microsoft Azure Speech Service
Ranking in Speech-To-Text Services
3rd
Average Rating
9.0
Reviews Sentiment
7.7
Number of Reviews
3
Ranking in other categories
Text-To-Speech Services (2nd)
 

Mindshare comparison

As of August 2026, in the Speech-To-Text Services category, the mindshare of AssemblyAI is 6.7%, down from 8.2% compared to the previous year. The mindshare of Microsoft Azure Speech Service is 14.1%, down from 22.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Speech-To-Text Services Mindshare Distribution
ProductMindshare (%)
AssemblyAI6.7%
Microsoft Azure Speech Service14.1%
Other79.2%
Speech-To-Text Services
 

Featured Reviews

Leen Batta - PeerSpot reviewer
Full Stack Developer at a university with 10,001+ employees
Automated workflows have transformed classroom videos into instant interactive study content
While AssemblyAI performs exceptionally well, there are a few areas where the developer experience could be further improved. First, regarding native video file support, currently, developers must write custom back-end logic to extract the audio track from video files locally before uploading. If AssemblyAI supported direct native video uploads and handled the audio extraction internally on their servers, it would simplify our back-end architecture. Native real-time status updates could also be improved because while the API is highly stable, writing custom asynchronous polling loops to check transcription status adds boilerplate code. Lastly, the queue latency for micro-files could be optimized because we noticed some initial queue or warm-up latency when transcribing very short audio files under one minute.
RM
Business Director at central it
Facilitating seamless international communication through efficient transcription and translation tasks
The product is limited when it comes to integrating with different platforms and using many other APIs. The marketplace is very limited and it's difficult to implement solutions in it. Enhancing features by integrating with other AI solutions like Gemini and Menus, as well as improving communication across platforms, would make it a more comprehensive solution.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The best features AssemblyAI offers are transcription and real-time transcriptions, and the speed of real-time transcription stands out to me because it's 20 to 40% faster than the industry benchmark, so speed is definitely one of the pros of AssemblyAI."
"AssemblyAI can make work really easier and faster, because why would I wish to spend more than four to five hours on a single one-hour transcript if with AssemblyAI I can do it within forty minutes?"
"AssemblyAI has positively impacted our organization in terms of user experience, providing clear information to users because it can understand user intent properly, and users are happy because the AI agent can respond to them positively and perfectly in their language regardless of how they communicate."
"The primary benefit I receive from their product is much more accurate transcription; first, it is a very affordable service, and second, the accuracy is much better compared to other services such as Deepgram or AWS transcription services, which are the main benefits."
"Because of AssemblyAI, we were able to envision something that could speak naturally to mass consumers."
"AssemblyAI has positively impacted my organization as it is in our active pipeline, making it one of the core building blocks of our product that we are currently making."
"After shifting to AssemblyAI, the biggest two points we experienced were that the speed of our software increased and our costing of the API reduced."
"AssemblyAI has positively impacted my organization by being very helpful for audio transcription, saving time, and helping me find meeting notes."
"Useful text-to-speech and speech-to-text features."
"The documentation and boilerplate code [a template of code] was available."
"Overall, in my opinion, the transcription service is rated as ten out of ten."
 

Cons

"AssemblyAI could be improved because when we have different accents on the same call, it usually fails, especially when we have American, Asian, and Latin American speakers on the same call, making the transcriptions a bit noisy."
"One area where AssemblyAI can be improved is in summarization."
"One aspect where AssemblyAI can improve is the efficiency for Indian languages, as we have seen a lack of accuracy."
"AssemblyAI could improve their free tier."
"AssemblyAI can be improved in several areas."
"I think the documentation could be improved a bit because it is a little difficult to follow for the first-time user."
"AssemblyAI needs to be more accurate, particularly with regard to spelling."
"AssemblyAI could be improved because the accuracy drops noticeably with a heavy accent or a very fast speaker, and pricing can become expensive at a high volume, so better multi-support or more affordable enterprise pricing tiers would make it significantly more competitive."
"Lacks a voice recording option."
"It can improve based on the native language."
"The product is limited when it comes to integrating with different platforms and using many other APIs."
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Top Industries

By visitors reading reviews
University
35%
Outsourcing Company
11%
Comms Service Provider
9%
Wholesaler/Distributor
9%
Computer Software Company
8%
Comms Service Provider
8%
Manufacturing Company
7%
Educational Organization
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise4
Large Enterprise7
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for AssemblyAI?
Regarding my experience with pricing, setup cost, and licensing, I would like to know if it can be reduced somehow, but apart from that, licensing is good enough for us.
What needs improvement with AssemblyAI?
AssemblyAI can be improved in several areas. I don't remember if AssemblyAI had a webhook, but if they have one, that's beneficial. The biggest improvement I think was the lack of background sound....
What is your primary use case for AssemblyAI?
My main use case for AssemblyAI was for a voice-based calling system that we created. A specific example of how I used AssemblyAI in my voice-based calling system is that it was used for the text-t...
What is your experience regarding pricing and costs for Microsoft Azure Speech Service?
The product is included and does not incur any additional costs. Pricing information is not available at the moment.
What needs improvement with Microsoft Azure Speech Service?
The product is limited when it comes to integrating with different platforms and using many other APIs. The marketplace is very limited and it's difficult to implement solutions in it. Enhancing fe...
What is your primary use case for Microsoft Azure Speech Service?
I use Microsoft Azure Speech Service ( /products/microsoft-azure-speech-service-reviews ) for communication between different countries. It facilitates communication via emails, documents, and temp...
 

Also Known As

No data available
Azure Speech Service, MS Azure Speech Service
 

Overview

 

Sample Customers

Information Not Available
KPMG
Find out what your peers are saying about AssemblyAI vs. Microsoft Azure Speech Service and other solutions. Updated: June 2026.
908,877 professionals have used our research since 2012.