Cartesia Sonic vs Demodokos Foundry
Cartesia Sonic
cartesia.ai
Demodokos Foundry
demodokos.comSide by side
| Figure | Cartesia Sonic | Demodokos Foundry |
|---|---|---|
| Price from | $5/mo | $1/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | — |
| Windows | — | Yes |
| API | Yes | — |
| Plans published | 6 | 4 |
| Spec score · Game Voice Generators | 8.6 (#12) | 8.0 (#23) |
| Free plan | Yes | No |
| Headquarters | San Francisco, California, United States | European Union |
| Product | Sonic is a text-to-speech model for real-time voice applications. | Foundry combines music generation, voice creation, dubbing, Reader, Dictation, and audio production in a local Windows studio. |
| Security | Cartesia lists HIPAA compliance, SOC 2 Type 2, GDPR, and PCI on the Sonic page. | The maker says Foundry does not upload creative content to a cloud AI service for generation or processing. |
| Paid from | 5 | 12 |
| Support | Cartesia's documentation directs users to Discord to chat with the Cartesia team and community for help. | Product support is handled directly by the people behind Foundry, with contact support and public community channels listed. |
Plans
Cartesia Sonic
- FreeFree
- Pro$5 a month
- Startup$49 a month
- Scale$299 a month
- FreeFree
- EnterprisePriced on request
Demodokos Foundry
- Creator$12 a month
- Creator$12 a year
- Professional$39.20 a year
- Enterprise$3,000 a year
In their own words
Cartesia Sonic
Cartesia Sonic is a text-to-speech model for real-time voice applications, available through the web and an API. It has sub-90ms latency and supports 44 languages. Sonic can interpret emotional subtext and add non-verbal expressions such as laughter to transcripts. Its localization feature carries emotion, tone, and speaker identity into another language, while custom pronunciation dictionaries let users set how proper nouns and domain terms are spoken. For voice agents, Managed Agents combine Ink-2 speech-to-text, a selected LLM, and Sonic-3.6 text-to-speech, with turn-taking and interruption handling. Phone connectivity can use Cartesia-provisioned numbers, imported Twilio numbers, or a carrier over SIP. Cartesia lists HIPAA compliance, SOC 2 Type 2, GDPR, and PCI. It says Sonic can be deployed on-premise, in a customer VPC on AWS, GCP, or Azure, or through OEM licensing. A free plan includes 20K credits per month and two concurrent text-to-speech requests. Paid plans start at $5/mo; higher tiers raise credit allowances and list capabilities including organizations and priority support.
Demodokos Foundry
Demodokos Foundry has no write-up on Specifiction yet; its figures are above.