Cartesia Sonic vs GladeCore
Cartesia Sonic
cartesia.aiGladeCore
gladecore.comSide by side
| Figure | Cartesia Sonic | GladeCore |
|---|---|---|
| Price from | $5/mo | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | — | Yes |
| macOS | — | Yes |
| API | Yes | — |
| Plans published | 6 | 4 |
| Spec score · Game Voice Generators | 8.6 (#12) | 7.0 (#40) |
| Integrations | Managed Agents can use Cartesia-provisioned numbers, import Twilio numbers, or connect a carrier over SIP. | The pricing page lists OpenAI, Anthropic, Groq, OpenRouter, and Ollama as cloud backends, alongside ElevenLabs integration. |
| Product | Sonic is a text-to-speech model for real-time voice applications. | GladeCore is a C/C++ SDK for adding locally running LLM-driven dialogue, text-to-speech, and speech-to-text to game characters. |
| Security | Cartesia lists HIPAA compliance, SOC 2 Type 2, GDPR, and PCI on the Sonic page. | The privacy policy says Glade implements reasonable measures to protect personal information users provide and that SDK data security is within the user's control. |
| Support | Cartesia's documentation directs users to Discord to chat with the Cartesia team and community for help. | The site directs developers to Discord for community and team support and lists [email protected] for contact. |
Plans
Cartesia Sonic
- FreeFree
- Pro$5 a month
- Startup$49 a month
- Scale$299 a month
- FreeFree
- EnterprisePriced on request
GladeCore
- BasicPrice not published
- EnterprisePriced on request
- ProPrice not published
- ProPrice not published
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.