Individual skill
cartesia-sonic
Use Cartesia Sonic and related Cartesia voice APIs for production speech: text-to-speech, realtime WebSocket TTS, voice selection, instant and professional voice cloning, pronunciation/language/emotion controls, voice localization, voice changer, pricing/concurrency planning, privacy/security review, and QA for narration, ads, localization, dubbing, avatars, and interactive voice agents.
skills/providers/text-to-speech/cartesia-sonic/SKILL.md
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- Observed behavior
- Instructions only
- Last checked
- Nov 11, 2026
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- 241
- Repository last updated
- Jul 14, 2026
- License
- MIT
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# Cartesia Sonic production skill
Use this skill when a media-production agent is choosing, prompting, integrating, or reviewing Cartesia Sonic for speech output. Treat Sonic as a low-latency text-to-speech provider first; use adjacent Cartesia voice APIs only when the production need explicitly requires them.
All volatile facts below were checked against official Cartesia documentation or legal pages on 2026-07-10. Re-check before committing budgets, compliance claims, model IDs, pricing, concurrency, supported languages, or API behavior.
## Provider boundary
Documented facts:
- Sonic is Cartesia's text-to-speech model family. The current production default is `sonic-3.5`; API references also list `sonic-3` and `sonic-latest`.
- Sonic takes text and returns generated speech. It is suitable for realtime voice agents, narration, dubbing, avatars, notifications, ads, and localization when the workflow starts from a transcript.
- Cartesia also documents Ink speech-to-text, Line hosted voice agents, voice cloning, voice localization, infill, and voice changer. Do not present all of these as "Sonic TTS"; name the exact Cartesia surface being used.
- Voice changer is not TTS: it takes an input speech clip and returns speech with the same intonation in a different target voice.