Cartesia vs ElevenLabs Agents
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 ElevenLabs Agents if you want platform for building real-time voice and chat ai agents (Supervised agent, subscription).
| Cartesia | ElevenLabs Agents | |
|---|---|---|
| What it is | Low-latency voice AI models and a platform for real-time voice agents | Platform for building real-time voice and chat AI agents |
| Type | platform | platform |
| Autonomy | Assistant | Supervised agent |
| Pricing | freemium · Free (20K credits/mo); Pro $5/mo | subscription · Free tier; paid plans from ~$5/mo + usage |
| Best for | developers, enterprise | developers, mid-market, enterprise |
| Deployment | saas, api, self-hosted, on-prem | saas, api |
| Modalities | text, voice, api, code | voice, text, api |
| Models | proprietary | proprietary, model-agnostic, claude, gpt, gemini |
| Protocols | rest-api, function-calling | mcp, function-calling, rest-api |
| Integrations | LiveKit, Twilio, Pipecat, Vapi | Twilio, Genesys, Vonage, Telnyx, Plivo, HubSpot |
| 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
ElevenLabs Agents
- +LLM-agnostic on top of best-in-class proprietary text-to-speech and its own speech-to-text
- +Strong first-class telephony story (Twilio, SIP, multiple carriers) with sub-second latency
- +Flexible build paths: no-code builder, SDKs, WebSocket API, function calling, and MCP
- -Layered, recently changed pricing (bundled minutes plus overage plus pass-through LLM cost) makes total cost hard to predict
- -Autonomy is bounded to configured tools, not autonomous out of the box
Which should you choose?
Cartesia is low-latency voice ai models and a platform for real-time voice agents, best for developers, enterprise. ElevenLabs Agents is platform for building real-time voice and chat ai agents, best for developers, mid-market, enterprise. The right choice depends on the autonomy level you want, your existing integrations, and your budget, all compared above.
This comparison is generated from the sourced Cartesia and ElevenLabs Agents profiles. Open either profile to review its evidence and last-reviewed date.