Choose AssemblyAI if you need
- Integration with Zapier, Zoom or LiveKit. We haven't found them on Vapi's website.
At a glance
- AssemblyAI has a free plan. We haven't confirmed one for Vapi.
- 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.
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
- HIPAA. We haven't found it on AssemblyAI's website.
AssemblyAI
Nobody has reviewed AssemblyAI yet. Its rating shows once it has 3 reviews.
Review AssemblyAI
Vapi
Nobody has reviewed Vapi yet. Its rating shows once it has 3 reviews.
Review VapiThe facts
- What it does
- AssemblyAIVoice AI infrastructure for builders, with pre-recorded and real-time speech-to-text and voice agent APIs
- VapiBuild, test and deploy voice AI agents. The platform for developers creating conversational voice AI
- Free plan
- AssemblyAIYes
- VapiNot confirmed
- Pricing
- AssemblyAINot confirmed
- VapiNot confirmed
- Paid plans from
What they share
From the platforms and integrations each website lists.
Platforms
Both
- API
Only AssemblyAINothing else listed
Only VapiNothing else listed
Integrations
Both
- Twilio
Only AssemblyAI
- Zapier
- Zoom
- LiveKit
- Pipecat
- Vapi
People who switched
Reviewers who say they used one of these before the other.
No reviewer has said they moved between AssemblyAI and Vapi yet.
Used either of them?
Your review makes this comparison better for the next person. Review AssemblyAI or review Vapi.