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AssemblyAI vs Microsoft Azure Speech Service comparison

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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 (3rd)
 

Mindshare comparison

As of October 2026, in the Speech-To-Text Services category, the mindshare of AssemblyAI is 6.9%, down from 7.7% compared to the previous year. The mindshare of Microsoft Azure Speech Service is 13.4%, down from 20.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Speech-To-Text Services Mindshare Distribution
ProductMindshare (%)
AssemblyAI6.9%
Microsoft Azure Speech Service13.4%
Other79.7%
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

"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."
"What stood out to me about the speech-to-text feature of AssemblyAI was the speed, accuracy, and ease of integration."
"AssemblyAI impacts my system very well and performs excellently; my users have provided good feedback because I am using AssemblyAI for video transcription and diarization, and it is very fast."
"I would suggest others to go for AssemblyAI because it is the best in the market in terms of accuracy, outputs, and the different languages that it caters to and transcribes."
"Using AssemblyAI has worked exceptionally well for me because it has helped my team input very little effort to check for quality."
"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."
"Using AssemblyAI ensured the transcript was highly accurate, meaning that the final educational tools generated by our LLM were of professional academic quality."
"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

"I wish AssemblyAI could improve its multilingual support, as it did not work well when I spoke in different languages."
"The only point where I think AssemblyAI can be improved is in the export functionality."
"AssemblyAI should respond more quickly because when I post a ticket, they take too much time to respond to it."
"AssemblyAI can be improved; I think they should manage their webhooks better to retrieve my data as soon as possible for my audio."
"I believe the streaming process accuracy should improve, and I also wish for a proper application for normal users, not just for developers, so they can easily convert audio."
"I think the documentation could be improved a bit because it is a little difficult to follow for the first-time user."
"One aspect where AssemblyAI can improve is the efficiency for Indian languages, as we have seen a lack of accuracy."
"One area where AssemblyAI can be improved is in summarization."
"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
33%
Outsourcing Company
12%
Comms Service Provider
10%
Wholesaler/Distributor
8%
Comms Service Provider
10%
Computer Software Company
7%
Manufacturing Company
7%
Energy/Utilities Company
6%
 

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: September 2026.
917,433 professionals have used our research since 2012.