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Deepgram

Trains its own speech models from scratch, built for call centers

4.5 Audio
4.5 Excellent 4.5
Own model training gives more control over accuracy and speed tradeoffs No consumer app, requires engineering integration
Reviewed by Challenging Voice Editorial · Updated Jul 2026 How we rate
PricingFree
Free planYes
CompanyDeepgram
PlatformsAPI, Web
CategoryAudio
Founded2015
Last reviewedJul 2026

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Overview

Deepgram has operated since 2015, among the older speech-to-text companies still active, and it trains its own speech recognition models from the ground up rather than fine-tuning an existing open model like Whisper. That from-scratch approach is the company's core technical claim: models built specifically for accuracy and speed at production scale rather than adapted from a general-purpose base.

Real-time streaming transcription is where Deepgram is used most: call centers, voice agent platforms, and live captioning systems rely on its API to transcribe speech as it happens rather than after a recording finishes, a harder technical problem than batch transcription of a finished file. Enterprise customers in telecom and customer support make up a meaningful part of its business.

Pricing runs on usage-based API rates with free credits for testing before production deployment. For an engineering team building a voice agent or call-analytics product that needs fast, accurate real-time transcription at scale, Deepgram's from-scratch models and streaming focus target that specific technical requirement more directly than general-purpose transcription APIs.

Key features

  • Speech recognition models trained from scratch, not fine-tuned Whisper
  • Real-time streaming transcription API
  • Built for call center and voice agent use cases
  • Usage-based API pricing
  • Free credits for development and testing
  • Enterprise deployment options

Screenshots & demo

Demo video

Screenshots

Deepgram screenshot 1

Pricing

Deepgram offers a free plan, with paid upgrades for higher limits and more features.

  • Pricing modelFreemium
  • Starting priceFree
  • Free planYes
Visit Deepgram

Pricing is provided as a guide. Check the official site for the latest plans.

Is Deepgram expensive?

Deepgram has no advertised paid tier. Among the 87 priced tools we list in Audio, the median entry price is $10 a month.

67% of Audio tools in the directory offer a free tier, and this is one of them.

Compared against every priced listing in Audio, recalculated as the catalogue changes. Method and the full market breakdown are in our AI tool pricing study.

Pros & cons

Pros

  • Own model training gives more control over accuracy and speed tradeoffs
  • Strong fit for real-time, low-latency transcription needs
  • Long operating history in the speech API space
  • Enterprise-proven at call center scale

Cons

  • No consumer app, requires engineering integration
  • Real-time focus matters less for simple batch transcription needs
  • Costs can scale significantly at high call volume

How it compares

ToolRatingFreeFromBest known for
Deepgram (this tool)4.5YesFreeSpeech recognition models trained from scratch, not fine-tuned Whisper
AssemblyAI4.5YesFreeUsage-based speech-to-text API
Gladia4.3YesFreeWhisper-based model with additional accuracy tuning
Google Cloud Speech-to-Text4.3YesFreeSpeech recognition across 125+ languages and regional variants

Alternatives to Deepgram

4 tools matched to Deepgram on what they do, their category and their price.

Voicegain

4.0

Voice AI platform with speech-to-text APIs, voice agents and healthcare call automation that runs on its cloud, a private VPC or fully on-premises.

Freemium Audio

Frequently asked questions

What is Deepgram?
Deepgram has operated since 2015, among the older speech-to-text companies still active, and it trains its own speech recognition models from the ground up rather than fine-tuning an existing open model like Whisper.
Is Deepgram free?
Yes, Deepgram offers a free plan. Paid plans unlock more features and higher usage limits.
What are the best Deepgram alternatives?
The closest matches in the directory are AssemblyAI, Gladia, and Google Cloud Speech-to-Text, compared side by side above.

Reviews

4.5 Editorial rating No reviews yet

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