Head-to-head · facts checked 21 Sept 2026
Deepgram vs Sonix
Deepgram uniquely has 9 features · Sonix uniquely has 3 features.
From
$0.26/hr (pay as you go)
Free plan
No
From
$10/hr pay as you go, or $25/mo (Core)
Free plan
No
The verdict
Deepgram or Sonix?
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
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 Usage-billed.
Growth
— · $4,000+/yr
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
Sonix
Pay As You Go
$10/hr
No subscription; pay per audio hour; 5 GB storage; single-user; no AI workspace
Core
$25/mo · $275/yr
5 hrs/mo transcription & translation; 5 hrs/mo AI workspace; 25 GB storage; 1 user
Advanced
$50/mo · $550/yr
20 hrs/mo transcription & translation; 25 hrs/mo AI workspace; 50 GB storage; 1 user
Pro
$80/mo · $880/yr
40 hrs/mo transcription & translation; 100 hrs/mo AI workspace; 100 GB storage; 1 user
Enterprise
Custom
Everything in Pro plus SOC 2, HIPAA, SSO/SCIM, audit logs, 1 TB storage, unlimited members, dedicated account manager
For everything else about each tool, read the full Deepgram review and Sonix review.
Side by side
| Company | ||
| Founded | 2015 | 2017 |
| HQ | San Francisco, USA | San Francisco, USA |
| AI model | Nova-3, Flux (Proprietary) | Proprietary ASR + Neural MT |
| User base | 100K+ developers | 6.2M+ |
| Platforms | Web | Web |
| Languages | 45+ (Nova models), 10 (Flux Multilingual) | 54+ |
| Pricing | ||
| Pricing model | Usage-based | Subscription |
| Free plan | No | No |
| Free trial | No | Yes — 30 minutes, no credit card required |
| Starting price | $0.26/hr (pay as you go) | $10/hr pay as you go, or $25/mo (Core) |
| Enterprise | Custom (contact sales) | Custom pricing |
| All plans | Pay As You Go — Free to start Growth Enterprise — Custom | Pay As You Go — $10/hr Core — $25/mo Advanced — $50/mo Pro — $80/mo Enterprise — Custom |
| Positioning | ||
| Best for | Developers building voice products who need self-hosted transcription plus a standalone text to speech API | Research, legal and media teams who want an editor synced to the audio and exports into NVivo or Premiere Pro |
| 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. | SOC 2 Type II and HIPAA-compliant transcription with 99% accuracy across 54+ languages, purpose-built for regulated industries like healthcare and legal |
| Competitors | AssemblyAI, Rev AI, Google Speech-to-Text, Amazon Transcribe, OpenAI Whisper, ElevenLabs | Otter.ai, Rev.com, Descript, Trint, Happy Scribe |
| 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 | Zoom, Microsoft Teams, Google Meet, Webex, Zapier, Adobe Premiere |
| Zapier | — | ✓ |
Section 02
Deepgram vs Sonix: common questions
Is Deepgram or Sonix cheaper?
Deepgram's cheapest paid plan is $0.26/hr (pay as you go) and Sonix's is $10/hr pay as you go, or $25/mo (Core). Compare what each plan includes below before going on price alone.
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