Cartesia vs Regal
A side-by-side comparison of capabilities, autonomy, integrations, and pricing to help you choose.
Short answer: choose Cartesia if you want low-latency voice ai models and a platform for real-time voice agents (Assistant, freemium); choose Regal if you want ai phone agents for enterprise inbound and outbound contact centers (Autonomous agent, enterprise).
| Cartesia | Regal | |
|---|---|---|
| What it is | Low-latency voice AI models and a platform for real-time voice agents | AI phone agents for enterprise inbound and outbound contact centers |
| Type | platform | agent |
| Autonomy | Assistant | Autonomous agent |
| Pricing | freemium · Free (20K credits/mo); Pro $5/mo | enterprise |
| Best for | developers, enterprise | mid-market, enterprise |
| Deployment | saas, api, self-hosted, on-prem | saas, api |
| Modalities | text, voice, api, code | voice, text, email |
| Models | proprietary | model-agnostic |
| Protocols | rest-api, function-calling | rest-api |
| Integrations | LiveKit, Twilio, Pipecat, Vapi | Salesforce, HubSpot, Twilio, Segment, Snowflake |
| Capabilities | 4 documented | 4 documented |
Cartesia
- +Genuinely differentiated state-space-model tech with best-in-class latency and on-device efficiency
- +Full stack (TTS, STT, cloning, and the Line agent platform) plus deep ecosystem integrations and self-hosted/VPC options
- +Strong technical credibility and capital, including NVIDIA backing
- -Younger and less battle-tested than ElevenLabs and Deepgram; the Line agent platform is barely a year old
- -Closed, proprietary models (no open weights for production Sonic/Ink), creating lock-in
Regal
- +Handles inbound and outbound at enterprise scale, blending AI and human agents
- +Omnichannel journey orchestration with drag-and-drop builders and branded caller ID
- +Built-in A/B testing and reporting
- -Enterprise-oriented with no public pricing
- -Containment and CSAT figures are vendor-reported
Which should you choose?
Cartesia is low-latency voice ai models and a platform for real-time voice agents, best for developers, enterprise. Regal is ai phone agents for enterprise inbound and outbound contact centers, best for mid-market, enterprise. The right choice depends on the autonomy level you want, your existing integrations, and your budget, all compared above.