Intervo AI vs Vapi

Intervo AI

One of the few voice agent platforms where you can read the source and move the whole thing in-house if the hosted pricing turns against you. Model and voice vendors are swappable rather than locked, which keeps per-minute costs negotiable. The catch is that the headline monthly price is quoted against a struck-through number, which is a discount that has been running long enough to be the real price.

Pros

• +Source is public on GitHub, so self-hosting is a real fallback rather than a promise
• +Model provider and voice engine are picked independently, covering OpenAI, Anthropic, Google, ElevenLabs and Azure
• +Integrations cover Intercom, Zapier, Google Sheets, Cal.com and generic webhooks out of the box
• +A free tier with three agents makes evaluation possible without a card

Cons

• −The 129 USD plan is displayed as a permanent discount off a much larger list price, so the real anchor is unclear
• −No country or registered address is published for Codedesign, Inc.
• −Self-hosting shifts integration, security and compliance costs onto you, as the vendor itself notes
• −Stated 90 to 95 percent accuracy is vendor-reported and conditioned on ideal audio

Vapi

The default answer when a developer needs a voice agent on a phone line rather than a chat widget: it handles the hard real-time parts — barge-in, latency, turn-taking, telephony — and lets you swap in your own models. Enterprise adoption at Ring and Intuit is real validation. Cost forecasting is the hard part, because the platform fee is only one of four meters running.

Pros

• +Handles real-time voice mechanics: turn-taking, interruptions, latency and telephony
• +Bring-your-own-key support across OpenAI, Anthropic and Google avoids double model markup
• +CRM and helpdesk integrations for Salesforce, HubSpot and Zendesk
• +SOC 2, HIPAA and PCI compliance plus SSO and RBAC on the enterprise tier
• +Proven at scale, with Amazon Ring routing inbound support volume through it

Cons

• −The $0.05/minute platform fee sits on top of speech, model and voice provider costs
• −Concurrency beyond ten lines costs $10 per line per month
• −Enterprise compliance features require an annual Scale contract
• −It is a developer platform, so there is no usable no-code path

Is Intervo AI cheaper than Vapi?

They charge in different units, so there is no like-for-like answer: Intervo AI starts at $10 once, Vapi at $0.05/min. Entry price is the lowest paid plan as we last verified it.

Does Intervo AI or Vapi have a free tier?

Intervo AI has a free tier; Vapi has paid plans only.

Which has a public API, Intervo AI or Vapi?

Both ship a public API, so either can be built on; the fact table above shows the platforms each one runs on.