Which AI answering service is the best?

Depends whether the website also takes support questions.

Phone only — missed calls, after-hours intake, a trade that lives on the line — Upfirst, Rosie, or Smith.ai can be enough. Confirm their cards with them.

Same people on the widget and the phone — a phone-only answering service is the wrong category. You will maintain two scripts. Category split: AI answering service vs website chatbot. Product test for widgets that also pick up: best AI chatbot that also answers the phone.

Fin Voice and Zendesk Talk are suite add-ons, not a $30 receptionist.

What you are actually shopping

An answering service picks up, takes a message or lead, sometimes books, texts you. The product is the number. Website chat is not in the box.

An AI receptionist is the front desk on that number: greet, answer, book, transfer. Guzli’s AI receptionist also runs website chat from the same answers. Phone-only receptionists do not.

A voice API (Vapi, Bland, Retell) is a building block. You assemble the agent. vs Vapi, vs Bland, vs Retell.

Chatbot + phone is one agent on help articles and solved tickets for the widget and the inbound call. That is Guzli. It is not a phone-only answering service. Hobby is $49/mo chat-only. Voice starts on Standard at $149 + 16¢/min. Pro is $499 + 14¢/min. /pricing/.

The phone-only shortlist

Upfirst — greet, business FAQs, booking, text summary. Receptionist replacement, not a storefront bot. If you later need the widget, you buy a second product.

Rosie — trades and field service: intake, scheduling, often bilingual, mobile-first. Not a help-center-trained website agent. If customers also live in chat, you still have a gap.

Smith.ai — AI plus live receptionists. You pay for the human net. Still a phone product. It does not replace a website chatbot. Smith.ai wins when a person on the call is the product.

Guzli sits next to this list, not on it, if your search was strictly “answer the phone.” It belongs when you also want the widget from the same brain: train once, forward the number (always, or only after hours / no-answer / busy), look up a Shopify order or book Calendly on both surfaces, hand off into Salesforce, Zendesk, or Guzli’s help desk. Not a live human bench. Not a 500-agent floor. Not a Shopify App Store app.

What is not an answering service

Fin Voice — sales-gated voice agent inside Fin. Salesforce signed an agreement to acquire Fin in June 2026; the deal had not closed as of this writing. Does Fin answer the phone?

Gorgias Voice / Consio / Ringly — phone next to a Shopify helpdesk. Two products. Gorgias alternative that answers the phone.

Zendesk Talk + Voice AI — telephony inside Suite. Confirm packaging on your account.

Use those when the desk is already the system of record. Do not price them like Upfirst.

Phone-only is the wrong buy when

Shoppers ask order status in chat at 2pm and call at 7pm. Help articles and solved Salesforce or Zendesk tickets already have the answers. You need the same Shopify or Stripe action on both channels. You want one inbox, not a text from the answering service plus a separate chat log.

Then you are shopping a chat-plus-phone agent, not this list.

One week, five calls

Forward after hours only. Call hours, pricing, booking, order status, “talk to a person.” Send the same five through the widget if you have one. If the answers diverge, you have two brains. A transfer should arrive with a summary.

Math without invented ROI: how much an AI call answering service costs. Fully free production phone AI is rare: free AI phone answering.

Keep your existing number? With Guzli, forward it. Other vendors: ask forwarding vs porting.

If the site never takes support questions, pick Upfirst or Rosie (or Smith.ai for the human net) and stop. If it does, book a demo on one agent instead of stacking a receptionist on a widget.