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Which services your data actually passes through

Running a call involves more than one system working together. Here are the specific named services involved, and what each one is responsible for.

Written plainly, on purpose
No vague reassurances, just what's actually true today.
01

Telephony and voice conversation

Vapi runs the AI voice conversation itself, and Twilio, used by Vapi, places the actual phone call over the telephony network.

02

Transcript analysis

Once a call ends, the transcript is sent to OpenAI, which determines whether the call resulted in a booked meeting or not. If that service is temporarily unavailable, a simpler keyword based fallback is used instead.

03

Calendar and billing

Google Calendar is used to create real calendar invitations when connected. Paddle handles subscription billing, payments, and tax as our merchant of record. HubSpot is used only if you choose to connect it as a lead source.

Frequently asked

Telephony, voice, and transcript analysis are used for every call. Google Calendar and HubSpot are only involved if you've connected them.

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