Deepgram
Deepgram / deepgram.com
High-accuracy AI speech recognition API with best-in-class speed for real-time transcription, voice agent applications, and high-volume batch transcription.
Pricing
Free
Free plan
Yes
Category
Audio
Platforms
2
Free plan
Yes
API access
Yes
Open source
No
Platforms
2
What is Deepgram?
Deepgram is a speech recognition API company that has differentiated itself in the transcription market primarily on speed and accuracy for real-time applications. While competitors like Rev.ai and AWS Transcribe are strong for batch processing of pre-recorded audio, Deepgram has invested in architecture optimised for real-time streaming transcription with latency measured in hundreds of milliseconds rather than seconds.
This low-latency real-time transcription is the capability that makes Deepgram particularly valuable for voice AI applications, conversational AI interfaces, and live captioning. A voice AI agent that converts speech to text in real time needs responses in under 500ms for a natural conversation experience. Deepgram's architecture achieves this more reliably than most competitors.
The Nova-3 model, Deepgram's current flagship, achieves high accuracy across diverse accents, technical vocabulary, and audio conditions, with particular strength in domains like medical, financial, and customer service language through domain adaptation options.
Dev-facing features include streaming WebSocket connections for real-time audio, webhook delivery for batch transcription, diarisation (speaker identification), and custom vocabulary for domain-specific terms. The Python, JavaScript, Go, and .NET SDKs reduce integration overhead.
The pricing is competitive and transparent. New accounts receive $200 in free credits for evaluation, and the pay-as-you-go rate at $0.0043 per minute for Nova-3 is significantly cheaper than AWS Transcribe and Google Speech-to-Text for equivalent quality. This cost advantage has driven significant developer adoption.
Deepgram is a developer infrastructure tool; there is no consumer interface. Its value is in building voice-enabled applications rather than personal transcription.
How Deepgram works
Deepgram runs as speech-to-text software built around audio and text workflows. Users typically start with a prompt, upload, or connected data source, and the underlying model handles the heavy lifting before returning a result you can refine or export. It's available on web and api, with API access for teams that want to embed it into their own products.
Watch Deepgram in action
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What makes it worth shortlisting
The capabilities that matter most for teams evaluating Deepgram.
Real-time streaming transcription
Low-latency WebSocket streaming for live audio transcription with responses in hundreds of milliseconds for voice AI applications.
Batch transcription
Accurate transcription of pre-recorded audio files with speaker diarisation, timestamps, and custom vocabulary.
Domain adaptation
Customise the speech recognition model for specific domains including medical, financial, and customer service vocabulary.
Best use cases
Who should use it
Pros
- Best-in-class low latency for real-time streaming transcription
- Competitive pricing significantly cheaper than major cloud providers
- Strong accuracy across diverse accents and domain-specific vocabulary
- HIPAA eligible for healthcare voice applications
Cons
- Developer-only platform with no consumer interface
- Domain adaptation requires additional configuration and training
- Enterprise features require sales engagement for access
Is it worth the price?
Free $200 in credits for new accounts. Pay-as-you-go at $0.0043/minute (Nova-3) for pre-recorded audio. Real-time streaming at $0.0059/minute. Enterprise custom pricing.
Model
Usage-based
Starting price
Free
Free trial
No
Tools like Deepgram
Rev.ai is strong for batch transcription with HIPAA support. Whisper (OpenAI) is a free open source alternative for self-hosted transcription. AWS Transcribe and Google Speech-to-Text are competing cloud APIs.
Deepgram vs Rev.ai
A side-by-side look at the closest alternative in this category.
Deepgram
Deepgram
Rev.ai
Rev.com
Free $200 in credits for new accounts. Pay-as-you-go at $0.0043/minute (Nova-3) for pre-recorded audio. Real-time streaming at $0.0059/minute. Enterprise custom pricing.
Free trial with 300 minutes of transcription. Usage-based at $0.02/minute for async transcription. $0.021/minute for streaming. Custom enterprise pricing.
SOC 2 Type II certified. HIPAA Business Associate Agreements available. GDPR compliant. Enterprise includes data handling agreements.
Enterprise includes HIPAA Business Associate Agreements. SOC 2 Type II certified. GDPR compliant.
Audio data submitted for transcription is processed on Deepgram's servers. Review privacy policy. HIPAA BAA available for healthcare applications. Enterprise includes comprehensive data handling terms.
Review Rev.ai's data handling policy. Audio submitted for transcription is processed by Rev.ai's infrastructure. Enterprise includes BAA for HIPAA compliance.
- Best-in-class low latency for real-time streaming transcription
- Competitive pricing significantly cheaper than major cloud providers
- Strong accuracy across diverse accents and domain-specific vocabulary
- HIPAA eligible for healthcare voice applications
- Strong transcription accuracy for English
- Reliable speaker diarisation for multi-speaker recordings
- Simple API integration with async and streaming support
- HIPAA-eligible for healthcare applications
- Developer-only platform with no consumer interface
- Domain adaptation requires additional configuration and training
- Enterprise features require sales engagement for access
- Developer-only product with no consumer interface
- Less suitable for consumer meeting note-taking use cases
- Multi-language coverage weaker than some competitors
- Custom model training requires Enterprise plan
Technical & deployment info
Key facts about model providers, platforms, and team support.
Model Provider
Deepgram
Models
Nova-3, Nova-2
Platforms
Web, API
Deployment
SaaS, API
Integrations
Python SDK, Node.js SDK, REST API, WebSocket
Team Collaboration
No
Launch Year
2015
Security & privacy
Compliance signals and data-handling notes as reported by the vendor.
SOC 2 Type II certified. HIPAA Business Associate Agreements available. GDPR compliant. Enterprise includes data handling agreements.
Audio data submitted for transcription is processed on Deepgram's servers. Review privacy policy. HIPAA BAA available for healthcare applications. Enterprise includes comprehensive data handling terms.
What users are saying
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Common questions about Deepgram
Editorial Verdict
Should you use Deepgram?
Deepgram is the best choice for developers building voice AI applications or real-time transcription products where low latency is critical. For consumer meeting note-taking, Otter.ai and Fathom are more appropriate.
Last verified July 24, 2026.