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AssemblyAI vs Deepgram 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
5th
Average Rating
8.2
Reviews Sentiment
4.8
Number of Reviews
6
Ranking in other categories
No ranking in other categories
Deepgram
Ranking in Speech-To-Text Services
1st
Average Rating
8.4
Reviews Sentiment
5.9
Number of Reviews
11
Ranking in other categories
Text-To-Speech Services (1st), AI Customer Support (3rd), AI Sales & Marketing (5th), AI Scheduling & Coordination (2nd)
 

Mindshare comparison

As of June 2026, in the Speech-To-Text Services category, the mindshare of AssemblyAI is 6.4%, down from 8.4% compared to the previous year. The mindshare of Deepgram is 16.4%, up from 15.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Speech-To-Text Services Mindshare Distribution
ProductMindshare (%)
Deepgram16.4%
AssemblyAI6.4%
Other77.2%
Speech-To-Text Services
 

Featured Reviews

Shrimanta Satpati - PeerSpot reviewer
Consultant at a tech vendor with 10,001+ employees
Automated multilingual call transcription has transformed accuracy and reduced manual effort
The best features AssemblyAI offers are its blazing fast transcribing skills and accurate results. It also has the capability of diarization, as well as transcribing in multiple different languages, both in foreign and Indic languages. I particularly value the accurate transcription of the language that the user provides as input and getting the best output without any kind of noise or silence. Automatic silence removal and voice activity detection are the best features of AssemblyAI that I appreciate in my daily use. The outputs are really accurate. AssemblyAI already cares for the overall grammar, syntax, and the different nuances of the particular speakers. I believe the accuracy part has improved significantly from the previous versions that were available and should continue to improve further to become the best product in the market. There was a saving of about 40 to 50% in transcription of audio analytics calls because previously, it was all done by humans, which could take days of effort and cost. This has significantly reduced to a great amount. We tested with Deepgram and AWS transcription service that is already available in the market, and then we switched over to AssemblyAI.
Arunkumar HG - PeerSpot reviewer
Technology Architect & Hands-On Leader | Prototyping, Automation, AI/LLM Integration | 20+ Years in at Regalix
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.

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."
"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."
"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."
"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."
"If you are using it for English transcription and your primary goal consists of only English audios, then I recommend it because it is affordable, performs better than alternatives, and has been available for a long time, so customer support should also be good."
"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 solution's most valuable feature is its speed of transcription, as it is one of the fastest tools, especially if you compare it to the second fastest solution that you can get, which is 20 times faster, so it is not just a marginally faster product."
"Deepgram's transcription stands out compared to other solutions primarily due to its speed and accuracy; those are important points for me because not all providers or tools handled Spanish well, but Deepgram adjusted perfectly for that use case, and we also chose 11Labs voice, a South American voice, which worked very well with Deepgram."
"Deepgram has significantly improved our transcription process in terms of speed and accuracy, allowing us to efficiently convert verbal feedback into text, enabling quicker analysis and implementation of new features."
"The best features of Deepgram for me are the level of transcription accuracy it provides and the amount of time it saves."
"The best thing with Deepgram is they are continually evolving and doing a lot of market research, and they take feedback seriously."
"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."
 

Cons

"I think the documentation could be improved a bit because it is a little difficult to follow for the first-time user."
"AssemblyAI should respond more quickly because when I post a ticket, they take too much time to respond to it."
"AssemblyAI should definitely cater to multiple different languages of the world as well as in India."
"However, when I try to handle Hindi plus English or Hinglish audios where there is code switching between English and Hindi, then it falls apart significantly."
"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."
"We haven't seen a return on investment with Deepgram so far; we have been building POCs for the last two years but recently switched to AWS in the last two months due to scalability issues with the pay-as-you-go model."
"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."
"I would not recommend Deepgram to other users because it does not properly identify video communication."
"The traditional Speech-to-Text doesn't understand when the user is done speaking in bot conversations."
"The area of live transcription could be improved. Sometimes, Deepgram's WebSocket is disposed of due to redundancy."
"Even though Deepgram has many customization options, I wish that Deepgram had voice cloning customization to a much larger extent."
"We've had issues in the past where it generates the transcript, and a lot of the text is duplicated."
 

Pricing and Cost Advice

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

By visitors reading reviews
University
32%
Comms Service Provider
11%
Wholesaler/Distributor
11%
Manufacturing Company
6%
Educational Organization
10%
Construction Company
9%
Financial Services Firm
8%
University
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business7
Midsize Enterprise1
Large Enterprise3
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise1
Large Enterprise1
 

Questions from the Community

What needs improvement with AssemblyAI?
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...
What is your primary use case for AssemblyAI?
My main use case for AssemblyAI is meeting and interview transcriptions. We are a culture operating system, so we track organization culture. Our bot joins the meetings of employees, and we convert...
What is your experience regarding pricing and costs for Deepgram?
My experience with pricing, setup cost, and licensing is that pricing is seamless and customizable as needed. Currently, we use the growth plan. For enterprise, they offer a higher tier, so it is c...
What needs improvement with Deepgram?
Deepgram has a vast UI and a vast range of models, but there could be a simpler version for creating AI agents rather than providing a full-fledged platform for minimal use cases. It could be multi...
What is your primary use case for Deepgram?
My main use case for Deepgram is creating voice agents to automate the customer support part and reply to FAQs and customer queries. Deepgram has multiple models, speech to text and text to speech ...
 

Overview

Find out what your peers are saying about AssemblyAI vs. Deepgram and other solutions. Updated: June 2026.
900,644 professionals have used our research since 2012.