Head-to-head
Deepgram vs Rev AI
Deepgram uniquely has 9 features.
From
Pay-per-use (per minute of audio processed)
Free plan
Yes — free tier with limited credits to try the API
The verdict
Deepgram or Rev AI?
Section 01
Pricing, plan by plan
Every plan each vendor publishes, monthly and yearly where both are offered.
Deepgram
Pay As You Go
Free to start (usage-billed)
Starts with $200 free credit; no minimums, no expiration; STT streaming from $0.0048/min (Nova-3 Monolingual), TTS from $0.0150/1k chars (Aura-1); Voice Agent from $0.075/min
Growth
— · $4,000+/year
Pre-paid annual credits redeemed against actual usage; save up to 20%; higher concurrency limits; STT streaming from $0.0042/min (Nova-3 Monolingual)
Enterprise
Custom
Large volume, custom deployment, self-hosted options, BAA for HIPAA, dedicated support SLAs, custom models
Rev AI
Rev AI does not publish a plan list we could read.
Section 02
Pros and cons
From each tool's full review, written from the same checked facts.
Deepgram
Pros
- Nova-3 flagship transcription model supports 45+ languages with both real-time streaming and batch processing available.
- The Voice Agent API combines speech-to-text, text-to-speech, and LLM orchestration into a single endpoint, simplifying full voice agent development.
- Flux model is purpose-built for conversational use cases, offering lower latency for real-time back-and-forth dialogue.
- Well-documented REST and WebSocket endpoints make integration straightforward for developers.
- Text-to-speech Aura models emphasize low-latency output, making them suitable for real-time voice applications.
- Platform serves 100,000+ developers and has proven adoption across medical transcription, customer support, and conversational AI.
- API-first architecture makes it flexible infrastructure for teams building voice-enabled products at scale.
Cons
- No consumer-facing interface, mobile app, or desktop editor — entirely unsuitable for non-developer users.
- The expanding feature set (TTS, Voice Agent API, LLM hooks) adds significant complexity on top of the core transcription product.
- Flux Multilingual only covers 10 languages, limiting its use for teams needing broad language support in conversational scenarios.
- Smart Formatting and other add-ons require additional configuration, adding setup overhead for developers.
- Primarily infrastructure-focused, meaning teams without engineering resources will struggle to extract value from the platform.
Rev AI
Pros
- Transcription accuracy reputation consistently holds up better than most competitors in the same category, validated by G2 reviews.
- AI model was trained on over 7 million hours of human-verified audio, giving it a strong foundation for reliable speech recognition.
- Supports both real-time streaming transcription and batch processing for pre-recorded files, covering a wide range of use cases.
- Speaker diarization, word-level timestamps, and confidence scores are included in the standard output.
- Custom vocabulary feature allows domain-specific terms to be pushed into the model, improving accuracy for niche industries.
- REST-based API with SDKs for Python, Node.js, and Java, plus webhook support and thorough documentation.
- Recently integrated OpenAI Whisper models including Fusion and Medium, expanding transcription model options.
Cons
- Strictly a speech-to-text API with no text-to-speech, voice cloning, music generation, or noise removal capabilities.
- Sentiment analysis and topic extraction are repeatedly described by reviewers as secondary features rather than reliable core offerings.
- Narrow product scope means teams needing an all-in-one audio AI solution will need to integrate additional tools.
- No hands-on testing data available to independently verify streaming transcription performance claims.
- Call center and live captioning use cases dominate positive streaming reviews, suggesting limited validation in other real-time contexts.
Side by side
| Company | ||
| Founded | 2015 | 2010 |
| HQ | San Francisco, USA | San Francisco, USA |
| AI model | Nova-3, Flux (Proprietary) | Proprietary (trained on 7M+ hours of human-verified speech data) |
| User base | 100K+ developers | — |
| Platforms | Web, API (Cloud & Self-Hosted) | Web, API, Cloud, On-Premises |
| Languages | 45+ (Nova models), 10 (Flux Multilingual) | 57+ |
| Pricing | ||
| Pricing model | Credit-based | Credit-based |
| Free plan | No | Yes — free tier with limited credits to try the API |
| Free trial | Yes | Yes — free trial available with no credit card required |
| Starting price | $0 (Free $200 Credit) | Pay-per-use (per minute of audio processed) |
| Enterprise | Custom (contact sales) | Custom — contact sales for enterprise pricing |
| All plans | Pay As You Go — Free to start (usage-billed) Growth Enterprise — Custom | — |
| Positioning | ||
| Best for | Developers & Startups (Pay As You Go), Growing Applications (Growth) | Developers and enterprises needing high-accuracy speech-to-text API integration |
| Differentiator | Deepgram offers a unified Voice Agent API combining STT, TTS, and LLM orchestration in a single low-latency API with enterprise-grade accuracy and flexible cloud or self-hosted deployment. | Rev AI offers industry-leading lowest Word Error Rate (WER) backed by 7M+ hours of human-verified training data, with significantly reduced bias across accents, genders, and ethnicities compared to competitors. |
| Competitors | AssemblyAI, Rev AI, Google Speech-to-Text, Amazon Transcribe, OpenAI Whisper, ElevenLabs | AssemblyAI, Deepgram, Google Speech-to-Text, AWS Transcribe, OpenAI Whisper |
| Features | ||
| No Credit Card Required (Payg) | ✓ | — |
| Rest API | ✓ | — |
| Speech to Text | ✓ | — |
| Text to Speech | ✓ | — |
| Voice Agent API | ✓ | — |
| Wss API | ✓ | — |
| API Access | ✓ | ✓ |
| Audio Enhancement | ✓ | ✕ |
| Batch Processing | ✓ | ✓ |
| Commercial Rights | ✓ | ✓ |
| Languages Supported | ✓ | ✓ |
| Mobile App | ✕ | ✕ |
| Music Generation | ✕ | ✕ |
| Noise Removal | — | ✕ |
| Podcast Editing | ✕ | ✕ |
| Text to Speech | ✓ | ✕ |
| Transcription | ✓ | ✓ |
| Voice Cloning | ✕ | ✕ |
| Voice Styles | ✓ | ✕ |
| Integrations | ||
| Adobe Audition | ✕ | ✕ |
| API Access | ✓ | ✓ |
| Garageband | ✕ | ✕ |
| Key Integrations | Cloudflare AI, Twilio, Vapi, Daily/Pipecat, Coval, Granola; WebSocket and REST API; supports BYO LLM and BYO TTS in Voice Agent API | REST API, Python SDK, Node.js SDK, Java SDK, cloud deployment, on-premises deployment |
Section 03
Deepgram vs Rev AI: common questions
Is Deepgram or Rev AI cheaper?
Deepgram's cheapest paid plan is $0 (Free $200 Credit) and Rev AI's is Pay-per-use (per minute of audio processed). Compare what each plan includes below before going on price alone.
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