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Deepgram vs PolyAI 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

Deepgram
Ranking in AI Customer Support
9th
Average Rating
8.4
Reviews Sentiment
5.9
Number of Reviews
11
Ranking in other categories
Text-To-Speech Services (4th), Speech-To-Text Services (1st), AI Sales & Marketing (8th), AI Scheduling & Coordination (3rd)
PolyAI
Ranking in AI Customer Support
13th
Average Rating
9.0
Number of Reviews
2
Ranking in other categories
Conversation Intelligence Software (8th)
 

Mindshare comparison

As of November 2026, in the AI Customer Support category, the mindshare of Deepgram is 1.4%. The mindshare of PolyAI is 1.0%, up from 0.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
AI Customer Support Mindshare Distribution
ProductMindshare (%)
Deepgram1.4%
PolyAI1.0%
Other97.6%
AI Customer Support
 

Featured Reviews

Mihir Jadhav - PeerSpot reviewer
Software Engineer at Futurescape Technologies
Voice agents have automated support and now handle customer queries with lower latency
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 multilingual, as in India, there are multiple several languages. If it had support for many more languages, especially regional languages, it would be valuable.
Harman Singh - PeerSpot reviewer
Devops Manager at Microsoft Ai
Automation has reduced routine inquiries while agents have gained time for complex issues
The best features PolyAI offers include its professional service as a software approach, which is a significant differentiator during initial onboarding, with the structured questionnaire process capturing our architecture, security constraints, brand voice, and API handshakes down the wire. They work instead of handling a raw, self-serve bot builder, allowing our platform engineers to avoid constant babysitting while PolyAI's dialogue engineers handle model fine-tuning, edge case routing, and continuous optimization. I also appreciate the low-latency, human-parity voice system, which helps the voice agent handle non-linear speech, sudden conversational pivots, background noise, and mid-sentence interruptions naturally, making audio latency practically imperceptible and eliminating the awkward pauses typical to traditional conversational IVRs. This is a game-changer. Finally, I appreciate how moving between chats and voice maintains context seamlessly, as conversations trigger or fallback or human handoff. State payloads transfer cleanly with zero loss of session context. The low-latency and human-parity voice system make a significant difference for our team, ensuring that interactions between AI and humans do not sound robotic. This capability makes the AI's responses clear, without context lagging or hallucination. Our end user experience has positively increased by 23.5%. Earlier, latency posed a challenge, but low latency ensures that we can achieve our end goals efficiently. The governance and security of PolyAI is really strong. It has not missed anything in terms of governance and AI, which I feel has been handled really well. The accuracy and reliability of PolyAI's AI output is exceptional, more than 200%, since it does not hallucinate, provides long answers without losing context, and utilizes low latency and advanced AI models. They have done a good job in this aspect.

Quotes from Members

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

Pros

"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 speed of the solution for transcribing videos is good."
"The features that I have been using in the tool have been very stable."
"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."
"Deepgram is able to handle large volumes of audio data without compromising accuracy."
"The ROI has been excellent; the cost is night and day compared to the cost of human transcription, and we're spending maybe a tenth of the cost we would if we were still doing manual transcriptions."
"The best thing with Deepgram is they are continually evolving and doing a lot of market research, and they take feedback seriously."
"The low-latency and human-parity voice system make a significant difference for our team, ensuring that interactions between AI and humans do not sound robotic."
"Overall, PolyAI has been a great addition to my customer service workflow, and its strong natural language understanding, voice quality, and automation have helped improve efficiency."
 

Cons

"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."
"I would not recommend Deepgram to other users because it does not properly identify video communication."
"Deepgram is currently restricted to only the English variants, but it should include other languages, such as German or French."
"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."
"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."
"The solution does not properly identify the number of speakers."
"The traditional Speech-to-Text doesn't understand when the user is done speaking in bot conversations."
"In comparison to Deepgram, I would say that the transcript accuracy offered by other products is much higher."
"One area where PolyAI can be improved is in deeper integrations with existing systems and more configuration on how to handle complex scenarios."
 

Pricing and Cost Advice

"The solution’s pricing is cheap."
"Deepgram is a cheap solution."
"The pricing is moderate."
"When using Deepgram, one needs to pay for the hours or minutes for which the transcription is needed."
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Top Industries

By visitors reading reviews
Educational Organization
10%
Construction Company
9%
University
9%
Comms Service Provider
8%
Construction Company
24%
Educational Organization
10%
Comms Service Provider
8%
Financial Services Firm
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise1
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 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 ...
What is your experience regarding pricing and costs for PolyAI?
PolyAI's pricing and licensing were competitive for my use case.
What needs improvement with PolyAI?
One area where PolyAI can be improved is in deeper integrations with existing systems and more configuration on how to handle complex scenarios. An area for improvement with PolyAI would be more fl...
What is your primary use case for PolyAI?
My main use case for PolyAI is to build a solution for customer service, particularly automating common queries efficiently. I use PolyAI to handle common customer service calls such as account bal...
 

Comparisons

 

Overview

Find out what your peers are saying about NICE, Kore.ai, Sendbird and others in AI Customer Support. Updated: October 2026.
921,523 professionals have used our research since 2012.