Choose Cartesia if you need
- Integration with LiveKit, Pipecat or Genesys. We haven't found them on Vapi's website.
At a glance
- Cartesia has a free plan. We haven't confirmed one for Vapi.
- Cartesia's lowest paid plan is Pro at $5 per month, as of October 20, 2026.
- Vapi's lowest paid plan is Core at $29 per month, plus usage, as of October 19, 2026.
- Both are available on API.
- Both work with Twilio.
- Both list SOC 2 and SSO.
- Only Vapi lists HIPAA.
- Both have a public API.
- Cartesia can be self-hosted. We haven't confirmed that for Vapi.
From each tool's own website, checked on the dates below, and from published reviews.
Which to choose
From the facts checked for both tools, not from opinion. A fact we haven't confirmed for one of them is never counted.
Choose Vapi if you need
- Integration with Deepgram, OpenAI or ElevenLabs. We haven't found them on Cartesia's website.
- HIPAA. We haven't found it on Cartesia's website.
Cartesia
Nobody has reviewed Cartesia yet. Its rating shows once it has 3 reviews.
Review Cartesia
Vapi
Nobody has reviewed Vapi yet. Its rating shows once it has 3 reviews.
Review VapiThe facts
- What it does
- CartesiaVoice agents that answer and make calls, and the speech models behind them, in one API
- VapiBuild, test and deploy voice AI agents. The platform for developers creating conversational voice AI
- Free plan
- CartesiaYes
- VapiNot confirmed
- Pricing
- CartesiaMonthly plans with usage credits
- VapiNot confirmed
- Paid plans from
What they share
From the platforms and integrations each website lists.
Platforms
Both
- API
Only CartesiaNothing else listed
Only VapiNothing else listed
Integrations
Both
- Twilio
Only Cartesia
- LiveKit
- Pipecat
- Genesys
- Rasa
- Bandwidth
People who switched
Reviewers who say they used one of these before the other.
No reviewer has said they moved between Cartesia and Vapi yet.
Used either of them?
Your review makes this comparison better for the next person. Review Cartesia or review Vapi.