Air AI vs Cartesia
A side-by-side comparison of capabilities, autonomy, integrations, and pricing to help you choose.
Short answer: choose Air AI if you want defunct ai voice agent; subject of a 2026 ftc enforcement settlement (Autonomous agent, enterprise); choose Cartesia if you want low-latency voice ai models and a platform for real-time voice agents (Assistant, freemium).
| Air AI | Cartesia | |
|---|---|---|
| What it is | Defunct AI voice agent; subject of a 2026 FTC enforcement settlement | Low-latency voice AI models and a platform for real-time voice agents |
| Type | agent | platform |
| Autonomy | Autonomous agent | Assistant |
| Pricing | enterprise | freemium · Free (20K credits/mo); Pro $5/mo |
| Best for | smb | developers, enterprise |
| Deployment | saas | saas, api, self-hosted, on-prem |
| Modalities | voice | text, voice, api, code |
| Models | proprietary | proprietary |
| Protocols | none | rest-api, function-calling |
| Integrations | - | LiveKit, Twilio, Pipecat, Vapi |
| Capabilities | 2 documented | 4 documented |
Air AI
- +2023 demos were unusually natural and long-duration for the era and reached a wide audience
- -Defunct: no live product, and the air.ai domain now belongs to an unrelated company
- -Subject of an FTC enforcement action and 2026 settlement banning the owners from marketing business opportunities
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
Which should you choose?
Air AI is defunct ai voice agent; subject of a 2026 ftc enforcement settlement, best for smb. Cartesia is low-latency voice ai models and a platform for real-time voice agents, best for developers, enterprise. The right choice depends on the autonomy level you want, your existing integrations, and your budget, all compared above.