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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
0.0
Number of Reviews
0
Ranking in other categories
No ranking in other categories
Deepgram
Ranking in Speech-To-Text Services
3rd
Average Rating
8.4
Reviews Sentiment
6.5
Number of Reviews
9
Ranking in other categories
Text-To-Speech Services (4th)
 

Mindshare comparison

As of October 2025, in the Speech-To-Text Services category, the mindshare of AssemblyAI is 7.7%, down from 9.1% compared to the previous year. The mindshare of Deepgram is 19.4%, up from 2.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Speech-To-Text Services Market Share Distribution
ProductMarket Share (%)
Deepgram19.4%
AssemblyAI7.7%
Other72.9%
Speech-To-Text Services
 

Featured Reviews

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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.
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Top Industries

By visitors reading reviews
University
17%
Comms Service Provider
13%
Computer Software Company
11%
Insurance Company
7%
Financial Services Firm
10%
Comms Service Provider
10%
Computer Software Company
10%
Retailer
10%
 

Company Size

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

Questions from the Community

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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...
 

Overview

Find out what your peers are saying about Microsoft, Google, Deepgram and others in Speech-To-Text Services. Updated: October 2025.
872,778 professionals have used our research since 2012.