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Deepgram vs Microsoft Azure Speech Service comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Apr 6, 2025

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

Deepgram
Ranking in Text-To-Speech Services
4th
Ranking in Speech-To-Text Services
3rd
Average Rating
8.4
Reviews Sentiment
6.5
Number of Reviews
9
Ranking in other categories
No ranking in other categories
Microsoft Azure Speech Service
Ranking in Text-To-Speech Services
3rd
Ranking in Speech-To-Text Services
1st
Average Rating
9.0
Reviews Sentiment
7.7
Number of Reviews
3
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of October 2025, in the Text-To-Speech Services category, the mindshare of Deepgram is 9.4%, up from 1.6% compared to the previous year. The mindshare of Microsoft Azure Speech Service is 24.7%, up from 22.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Text-To-Speech Services Market Share Distribution
ProductMarket Share (%)
Microsoft Azure Speech Service24.7%
Deepgram9.4%
Other65.9%
Text-To-Speech Services
 

Featured Reviews

Arunkumar HG - PeerSpot reviewer
A Powerful, Adaptable, and Constantly Evolving STT Solution for Voice Automation
Honestly, Deepgram has been exceptionally proactive in addressing the primary area that needed improvement. My main challenge was with the real-time detection of when a user has finished speaking in a live conversation, which is critical for a responsive voice bot. They directly solved this by releasing their Flux model. Because Flux is a recent release, I haven't yet had enough time to thoroughly test it and identify new limitations. At this stage, any "improvement" would be more of a "nice-to-have" feature rather than a fix for an existing problem. The core service is already very robust and meets all of our current needs. What additional features should be included in the next release? ---------------------------------------------------------------- Looking toward the future, here are a few features that could add even more value to an already excellent platform: * Advanced Built-in Analytics: While I can get the raw transcript and build my own analytics pipeline, it would be powerful to have features like sentiment analysis, emotion detection, or automatic summarization offered directly through the API. This would save significant development time. * More Granular Speaker Diarization: For calls with multiple participants, enhancing the real-time speaker diarization (labeling who is speaking) to be even more precise would be a fantastic addition for creating detailed call analyses. * Tighter Integration with TTS: Since Deepgram is also expanding into Text-to-Speech (TTS), offering a more seamlessly integrated STT-to-TTS pipeline could simplify the development stack for creating voice agents from start to finish. * Specialized, Pre-Trained Industry Models: While the general models are highly accurate, offering even more specialized, pre-trained models for specific industries like finance, healthcare, or legal-which are heavy on specific jargon-could push the accuracy even higher for those niche use cases.
Abhishek-Rana - PeerSpot reviewer
Offers ease of use and the availability of documentation is great
The simplicity impressed me the most. We just needed a single API key. The documentation was also great. I developed the AI application using Unity, a game engine that uses C#. Then, I searched online for instructions on how to use it. I found Microsoft's GitHub repository, which provided the necessary code for integrating the Speech Service into Unity with C#. The ease of use and the availability of documentation made the process smooth and impressed me the most. The documentation and boilerplate code [a template of code] was available, which I incorporated into my application with modifications. Initially, the code functioned so that when a button was clicked, the microphone would activate and recognize my speech. One of the benefits was the ability to see my spoken words visually on the screen as I spoke. For example, if I said "I am Abhishek Rana," I could see the sentence appear in real-time. When I stopped speaking, it automatically recognized the silence and ceased, sending the text for further processing. So, the real-time translation feature has helped me a lot.

Quotes from Members

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

Pros

"Deepgram's low latency transcription has greatly impacted my ability to deliver reliable voice agents and provided very good transcription."
"The speed of the solution for transcribing videos is good."
"The solution's Speech-to-Text conversion feature is really awesome."
"The most valuable capabilities of Deepgram that I've found so far include low latency, as it offers less than 200 milliseconds, which is not provided by any other text-to-speech models."
"The recognition of industry-specific terminology phrases and abbreviations is really important for us. We were able to get a good level of industry specificity with Deepgram."
"The features that I have been using in the tool have been very stable."
"The best thing with Deepgram is they are continually evolving and doing a lot of market research, and they take feedback seriously."
"Deepgram is able to handle large volumes of audio data without compromising accuracy."
"Useful text-to-speech and speech-to-text features."
"Overall, in my opinion, the transcription service is rated as ten out of ten."
"The documentation and boilerplate code [a template of code] was available."
 

Cons

"The traditional Speech-to-Text doesn't understand when the user is done speaking in bot conversations."
"The solution does not properly identify the number of speakers."
"The area of live transcription could be improved. Sometimes, Deepgram's WebSocket is disposed due to redundancy."
"I would like it to be more accurate."
"We've had issues in the past where it generates the transcript, and a lot of the text is duplicated."
"Deepgram is currently restricted to only the English variants, but it should include other languages, such as German or French."
"When I had an AI interview for coding, Deepgram didn't capture the names of programming languages or well-known LLMs accurately all the time."
"Regarding improvements for Deepgram, I think the quality of the transcriptions could be enhanced, as the Spanish accent poses challenges, making it harder to transcribe some words, and considering additional accents from Chilean or Argentine speakers could improve the model's performance with local words."
"The product is limited when it comes to integrating with different platforms and using many other APIs."
"Lacks a voice recording option."
"It can improve based on the native language."
 

Pricing and Cost Advice

"The solution’s pricing is cheap."
"When using Deepgram, one needs to pay for the hours or minutes for which the transcription is needed."
"The pricing is moderate."
"Deepgram is a cheap solution."
Information not available
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Top Industries

By visitors reading reviews
Financial Services Firm
10%
Comms Service Provider
10%
Computer Software Company
10%
Retailer
10%
Computer Software Company
12%
Manufacturing Company
8%
Educational Organization
7%
Financial Services Firm
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business8
Large Enterprise1
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for Deepgram?
My experience with pricing, setup cost, and licensing was good, as I found it to be cheaper without any problems.
What needs improvement with Deepgram?
Regarding improvements for Deepgram, I think the quality of the transcriptions could be enhanced, as the Spanish accent poses challenges, making it harder to transcribe some words, and considering ...
What is your primary use case for Deepgram?
I use Deepgram for a company that requested me to implement an AI voice agent for a security application that warns other neighbors of near alerts of some incidents that may occur in their neighbor...
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 Deepgram vs. Microsoft Azure Speech Service and other solutions. Updated: September 2025.
872,778 professionals have used our research since 2012.