tools
Sonic
Sonic is Cartesia's text-to-speech model for real-time voice applications, with voice cloning, localization, and multilingual speech.
In inglese
Sonic converts text into speech through Cartesia's API and playground. It supports emotional delivery, laughter markers, custom pronunciation dictionaries, voice cloning, voice localization, and speech across 44 languages.
It is used by teams building voice agents, customer support systems, sales and recruiting calls, training simulations, and localized audio experiences. Usage is credit-based; voice-agent call duration, telephony, and some voice features can cost extra.
Features
- Generates real-time speech from text through an API
- Interprets emotional context and supports laughter markers
- Clones a voice from 10 seconds of audio
- Localizes voices across 44 languages and accents
- Supports custom pronunciation dictionaries
- Runs on cloud, on-premise, and localized endpoints
- Supports SOC 2 Type 2, HIPAA, GDPR, and PCI requirements
Use cases
- Build real-time voice agents for customer support
- Call and qualify sales leads automatically
- Screen job applicants and send summaries to an ATS
- Create live sales-call training simulations
- Localize voice content for international markets
- Generate onboarding and customer-success calls
Pros
Cons
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.
- Introducing Ink-2: The #1-ranked STT built for voice agents (Ink-2)
Ink-2 is a speech-to-text model built for real-time voice agents.
- Introducing Line: The Modern Voice Agent Development Platform
Introducing Line by Cartesia, the voice agent development platform.
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
Get it
Security
Pricing
- Starting price
- $5/mo
- Prices checked
- 2026-09-24
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