Deepgram

Deepgram vs OpenAI Whisper

Discover why developers are choosing Deepgram over OpenAI Whisper for their Voice AI needs.

  • Preferred by developers across 7/7 languages tested, achieving an 8:1 preference ratio.
  • Up to 5x faster than Open AI Whisper
  • 36% more accurate than OpenAI Whisper, and delivering more reliable and precise transcriptions.

Based on 250+ reviews

Trusted by industry leaders

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Why switch from OpenAI Whisper?

Build with enterprise-grade speech recognition that's faster, more accurate, and affordable. No compromises.

Flexible deployment

Choose from self-hosted (on-premise and VPC) or managed service options with seamless integrations for minimal disruption to your workflows.

Custom model training

Deepgram offers tailored ASR models optimized with customer-specific data, ideal for industries with specialized jargon, accents, or unique speech patterns.

Enterprise security

Protect customer data privacy and ensure regulatory compliance with HIPAA-compliant transcription.

Innovation leader in Voice AI

Deepgram's deep learning models are optimized for speech data and trained on diverse datasets, delivering industry-leading performance in pre-recorded and real-time transcription.

Fast and accurate transcription

Deepgram's speech-to-text outshines OpenAI Whisper in both speed and accuracy, with domain-specific use case models (e.g. Nova-2 Medical) and custom training options that will give you a competitive edge.

Go beyond transcription

Build a dynamic full-stack voice agent with Deepgram's Voice AI platform, using speech-to-text, custom LLM, and text-to-speech models. Enjoy optimized performance and low latency with our open-source code.

Raising the bar for ASR performance

All the features. Better performance. Lower cost.

36%more accurate than OpenAI Whisper
5xfaster than OpenAI Whisper
1.4xcheaper than OpenAI Whisper
OpenAI Whisper LogoOpenAI Whisper
VS
Deepgram LogoDeepgram
13.2%
Word Error Rate
7%
229.6s
Speed
29.8s
$0.006
Cost
$0.0043

Word Error Rate (WER) [%] Speed (Median Inference Time [Sec] Per Audio Hour). Lower is better.

Comprehensive Voice AI Platform

Text to Speech

Generate lightning fast, human-like voices for real-time AI and high throughput applications.

  • Quality: Human-like tone, rhythm, and emotion
  • Speed: less than 250 ms latency
  • Scale: Cost-efficient and optimized for high-throughput applications
Switchback | TTS

Speech to Text

Power your products with world-class speech recognition. Everything developers need to build with confidence and ship faster. Unmatched performance guaranteed:

  • Accuracy: 30% lower word error rate (WER)
  • Speed: up to 40x faster inference time
  • Cost: 3-7x lower price
Switchback | STT

Voice Agents

A unified voice-to-voice API that enables natural-sounding conversations between humans and machines. With one powerful API, create LLM-powered AI agents that listen, think, and speak with the same intelligence and emotive quality that a person can.

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Don’t just take our word for it

Deepgram has been named a G2 Leader in 2025, solidifying its position in the industry and making it a top choice among developers. See why.

This image contains the 3 awards Deepgram has acquired respectively for momentum leader, best results and grid leader in the spring of 2025.

We’d love to talk to you

Speak to a Voice AI technical expert – Book your demo now!