OnCallClerk vs Nextiva XBert AI Receptionist
The short answer
- OnCallClerk costs least: $99 a month for 100 calls and $399 for 500.
- Pick OnCallClerk if you want the lower bill, booking in Google Calendar or booking in Outlook.
 OnCallClerksolo trades and service firms that need booking and urgent-call routing from day oneVisit site |  Nextiva XBert AI Receptionistservice businesses missing calls on the job, from HVAC and dental to law firmsVisit site | |
|---|---|---|
| Cost | ||
| At 100 calls a month | OnCallClerk$99Lowest | Nextiva XBert AI Receptionist$99 |
| At 500 calls a month | OnCallClerk$399Lowest | Nextiva XBert AI Receptionist$495 |
| Advertised from | OnCallClerk$29 a month | Nextiva XBert AI Receptionist$99 a month |
| The advertised plan covers | OnCallClerkThe $29 plan it advertises covers 72 of 100 calls. No price is published past that. | Nextiva XBert AI ReceptionistThe $99 plan covers all 100 calls. |
| Bills | OnCallClerkper minute | Nextiva XBert AI Receptionistper call |
| Keeps answering past your allowance | OnCallClerkNot stated | Nextiva XBert AI ReceptionistYesCalls past the included 100 are not cut off |
| Free trial or plan | OnCallClerkPartlyEvery plan opens with a 14-day free trial on a real number | Nextiva XBert AI ReceptionistPartlyThere is a 14-day free trial of the receptionist with no commitment |
| Month to month, cancel online | OnCallClerkYesBilling is month to month with no contract | Nextiva XBert AI ReceptionistYesThe XBert add-on is month to month with no long-term contract |
| On the call | ||
| Books appointments | OnCallClerkYesThe agent checks live calendar availability | Nextiva XBert AI ReceptionistYesXBert books into a connected calendar during the conversation, checking live availability |
| Transfers to a person | OnCallClerkYesTransfers are rule-based on call type, time of day or caller request | Nextiva XBert AI ReceptionistYesCallers can be put through to a named team member |
| Human receptionists as backup | OnCallClerkNoThere is no human team behind the agent | Nextiva XBert AI ReceptionistPartlyEscalation goes to the buyer's own staff, not to receptionists employed by Nextiva |
| After-hours rules | OnCallClerkYesCoverage is round-the-clock including nights, weekends and public holidays | Nextiva XBert AI ReceptionistYesCoverage is explicitly round-the-clock including weekends and public holidays |
| Urgent calls escalated | OnCallClerkYesYou set what counts as urgent | Nextiva XBert AI ReceptionistYesThe vendor states urgent requests are passed to staff mid-conversation |
| Texts your callers | OnCallClerkPartlyThe agent sends the caller an SMS confirmation when it books | Nextiva XBert AI ReceptionistYesThe same agent holds SMS and web chat conversations, sends booking links |
| Call summary by text | OnCallClerkYesEvery call produces a transcript and structured summary delivered by email, SMS or both | Nextiva XBert AI ReceptionistPartlySummaries, transcripts and reports arrive in the dashboard and as alerts |
| Language, privacy and trying it | ||
| Languages | OnCallClerkNot stated | Nextiva XBert AI ReceptionistNot stated |
| HIPAA, with a signed BAA | OnCallClerkNot stated | Nextiva XBert AI ReceptionistPartlyNextiva advertises HIPAA compliance for patient calls |
| Hear it before you buy | OnCallClerkYesA toll-free US demo number is published for calling the AI receptionist yourself | Nextiva XBert AI ReceptionistYesRecorded sample calls play on the product page for restaurant, healthcare |
| What it connects to | ||
| Google Calendar | OnCallClerkYesGoogle Calendar is a native integration that writes the event mid-call | Nextiva XBert AI ReceptionistNoGoogle Calendar, Calendly and Cal.com are live at no cost |
| Outlook | OnCallClerkYesGoogle Calendar is a native integration that writes the event mid-call | Nextiva XBert AI ReceptionistNoGoogle Calendar, Calendly and Cal.com are live at no cost |
| Calendly | OnCallClerkYesGoogle Calendar is a native integration that writes the event mid-call | Nextiva XBert AI ReceptionistNoGoogle Calendar, Calendly and Cal.com are live at no cost |
| Your trade’s software | OnCallClerkPartlyServiceTitan, Jobber and Housecall Pro are reached through signed webhooks rather than native apps, and no dental, legal | Nextiva XBert AI ReceptionistPartlyTrade systems are covered broadly, but only Housecall Pro is live |
| Keep your number | OnCallClerkYesYou can keep your current business line and forward it to the agent | Nextiva XBert AI ReceptionistNot stated |
| In short | ||
| What it is | OnCallClerkOnCallClerk is an AI receptionist that answers a small business's phone around the clock, holds a conversation, captures caller details, books appointments and transfers urgent calls. Setup is a no-code wizard with industry templates, a voice and either a new number or call forwarding.All answers for OnCallClerk | Nextiva XBert AI ReceptionistXBert AI Receptionist is Nextiva's AI front desk that answers calls, texts and web chats, books appointments and hands callers to staff. It is sold as a $99 monthly package of 100 conversations, standalone or added to a Nextiva plan.All answers for Nextiva XBert AI Receptionist |
| Checked | OnCallClerkOctober 15, 2026 | Nextiva XBert AI ReceptionistOctober 15, 2026 |
Costs are for 100 or 500 calls a month of 2½ minutes each, on the cheapest public plan. How we price