Tools
Octave vs Sonic
Octave or Sonic? Their plans monthly and yearly, the capabilities their makers state, security and latest updates, side by side — read from the makers' own pages.
In inglese
In short
- Both: Text to speech, Voice cloning, Many languages, API
- Only Sonic states: Speech to text, Dubbing, Commercial use
Octave
Octave is Hume's text-to-speech API for expressive speech, custom voices, emotional delivery, and real-time audio streaming.
Plans
Free
Free
- 10,000 monthly included characters
- 5 minutes of monthly EVI usage included
- 15 requests per minute
- 1 concurrent connection
- Unlimited voice cloning (create and use)
Starter
- $3 / month
- 30,000 monthly included characters
- 40 minutes of monthly EVI usage included
- 5 concurrent connections
- Unlimited voice cloning (create and use)
Creator
- $14 / month
- 140,000 monthly included characters
- 200 minutes of monthly EVI usage included
- 75 requests per minute
- 5 concurrent connections
- Unlimited voice cloning (create and use)
Pro
- $70 / month
- 1,000,000 monthly included characters
- 1,200 minutes of monthly EVI usage included
- 10 concurrent connections
- Unlimited voice cloning (create and use)
Scale
- $200 / month
- 3,300,000 monthly included characters
- 5,000 minutes of monthly EVI usage included
- 20 concurrent connections
- 3 team seats
- Unlimited voice cloning (create and use)
Business
- $500 / month
- 10,000,000 monthly included characters
- 12,500 minutes of monthly EVI usage included
- 30 concurrent connections
- 5 team seats
- Unlimited voice cloning (create and use)
Enterprise
Price on request
- As much text-to-speech usage as you need
- As much EVI usage as you need
- As many concurrent connections as you need
- Unlimited team seats
- Unlimited voice cloning (create, use and access via API)
- Slack support
Prices checked 2026-09-25 on the maker’s page.
Capabilities
- Text to speech — “Generate expressive, natural-sounding speech that conveys the full range of human emotion.” source
- Voice cloning — “Choose from a curated library of expressive voices, clone any voice from a sample, or design entirely new voices from natural language descriptions.” source
- Many languages — “Native-quality speech in 16+ languages with authentic accents.” source
- API — “Octave is Hume's text-to-speech API with emotional intelligence.” source
Latest updates
- Octave 2: next-generation multilingual voice AI (Octave 2)
Launching Octave 2 for text-to-speech in 11 languages and EVI 4 mini for the speech-to-speech API.
Sonic
Sonic is Cartesia's text-to-speech model for real-time voice applications, with voice cloning, localization, and multilingual speech.
Plans
Free
Free
- 20K credits / month
- $1 prepaid agents / month
- Text to Speech
- Speech to Text
Pro
- $5 /mo
- 100K credits / month
- $5 prepaid agents / month
- Commercial use license
- Instant voice cloning
Startup
- $49 /mo
- 1.25M credits / month
- $49 prepaid agents / month
- Pro voice cloning
- Organizations
Scale
- $299 /mo
- 8M credits / month
- $299 prepaid agents / month
- Priority support
- High concurrency limits
Enterprise
Price on request
- Custom credits & agent usage
- Volume pricing
- Custom concurrency limits
- DPAs and BAAs for compliance
- Shared Slack channel
- SSO
Prices checked 2026-09-24 on the maker’s page.
Capabilities
- Text to speech — “Sonic: The fastest and most natural text to speech model” source
- Voice cloning — “Clone any voice instantly with 10 seconds of audio.” source
- Speech to text — “Speech to Text” source
- Dubbing — “Dubbing Go global with localized voices and accents for every language.” source
- Many languages — “Reach international markets with Sonic — 44 languages and a wide range of accents, all with native-speaker quality voices.” source
- Commercial use — “Commercial use license” source
- API — “Access our models via API and bring a voice agent into production in minutes.” source
Security
- SOC 2 Type II — “Soc 2 Type II Report” source
- SOC 2 — “Soc 2 Type II Report” source
- GDPR — “Compliance PCI DSS 4.0.1 HIPAA SOC 2 Type 2 GDPR” source
- HIPAA — “Cartesia AI Inc. HIPAA.pdf” source
Latest updates
- Introducing Multilingual Voices
Introducing Multilingual Voices.
- Introducing Sonic-3.6 (Sonic-3.6)
Listeners preferred it in up to 93% of head-to-head tests across fifteen locales.
- New to Ink-2: keyterm prompting and configurable turn detection (Ink-2)
Keyterm prompting improves transcription accuracy, and turn detection tunes endpointing for speed or accuracy.