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Enterprise Voice AI: STT, TTS & Agent APIs for accurate, realistic, and cost-effective voice solutions.

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Reviews onG2
437 reviews tracked

The Bottom Line

Entry price

Free plan available, paid tiers above

Biggest pro

Fast transcription

Biggest con

Newer player

TL;DR - Deepgram

  • AI speech-to-text API
  • Fast, accurate transcription
  • Real-time and batch processing
Pricing: Free plan available
Best for: Growing teams
4.6/5 across review platforms

What is Deepgram?

Editorial review
Deepgram is an AI speech platform with speech-to-text, text-to-speech, and voice agent APIs. Features fast, accurate transcription with custom model training.

Available on: Web

Pros & Cons

Pros

  • Fast transcription
  • Good accuracy
  • Real-time support
  • Developer friendly
  • Competitive pricing

Cons

  • Newer player
  • Language limitations
  • Enterprise features limited
  • Documentation gaps
  • Smaller community

Ratings Across the Web

4.6(437 reviews)

Ratings aggregated from independent review platforms. Learn more

Key Features

Speech-to-text APIText-to-speech APIVoice Agent APIAudio IntelligenceCustom model trainingReal-time streamingSelf-hosted optionDiscord community100+ languagesLow latency

Pricing Plans

Free Trial

Pricing checked Jul 11, 2026

Pay As You Go

Free

Usage-based with $200 free credit (~43,000 minutes Nova transcription)

  • $200 free credit (no expiration)
  • No credit card required
  • Nova-3 STT at $0.0077/min (mono) or $0.0092/min (multi)
  • Nova-1/2 STT at $0.0058/min
  • Flux STT at $0.0077/min
  • Aura-2 TTS at $0.030/1K characters
  • Aura-1 TTS at $0.015/1K characters
  • Voice Agent API from $0.050/min
Most Popular

Growth

$4,000/year (minimum)

Pre-paid credits with up to 20% savings and higher concurrency

  • Up to 20% discount vs Pay As You Go
  • Nova-3 STT at $0.0065/min (mono) or $0.0078/min (multi)
  • Nova-1/2 STT at $0.0047/min
  • Flux STT at $0.0065/min
  • Aura-2 TTS at $0.027/1K characters
  • Aura-1 TTS at $0.0135/1K characters
  • Voice Agent API from $0.041/min
  • 100 REST API concurrent connections

Enterprise

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Custom pricing for large volumes, specific deployment, or support needs

  • Custom volume pricing
  • Custom concurrency limits
  • Dedicated support
  • Custom deployment options
  • SLA guarantees
  • On-premises available

Reviews

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4.6/5

Across 437 verified user reviews on G2

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Deepgram FAQ

How does Deepgram support real-time voice applications?

Deepgram offers real-time support for its speech-to-text capabilities, enabling immediate transcription of spoken language. This feature is crucial for applications requiring instant processing and response, such as live call centers or interactive voice agents.

Which teams would benefit most from Deepgram's offerings?

Teams focused on developing AI voice applications, transcription services, or AI agents would find Deepgram particularly useful. Its developer-friendly APIs and custom model training capabilities cater to technical teams building sophisticated voice solutions.

How is Deepgram priced?

Deepgram is available on a free tier, allowing users to explore its features without initial cost. For more extensive usage and advanced features, paid plans are offered to accommodate growing needs.

Can Deepgram be trained for specific industry terminology?

Yes, Deepgram supports custom model training, allowing users to enhance transcription accuracy for specialized vocabulary. This feature helps tailor the AI speech platform to specific domains or industry jargon.

What kind of trade-offs should users consider when choosing Deepgram?

Users should consider that Deepgram is a newer player in the market, which may mean a smaller community and some documentation gaps. Additionally, it has certain language limitations and its enterprise features might be less extensive compared to more established solutions.

How does Deepgram compare to AssemblyAI for transcription accuracy?

Deepgram is noted for its good accuracy and fast transcription speeds, making it a competitive option for speech-to-text needs. While AssemblyAI also offers transcription, Deepgram emphasizes its custom model training for enhanced precision in specific contexts.

Source: deepgram.com

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