There are four real alternatives to Open Lines, and for some businesses one of them is the better answer. Here is how each one works, and when we would tell you to pick it.
We do not publish other companies’ prices here — theirs change without telling us, and a stale number would be unfair to them and useless to you. We describe how each option charges, and link to their own page for the figure.
| Open Lines | Human service | Other AI receptionists | Build it yourself | |
|---|---|---|---|---|
| Who answers | AI, every call | Trained people, often with AI in front | AI, every call | Whatever you build |
| How you are charged | Flat monthly, by plan | Per call or per minute | Flat, per minute, or per unique caller | Per minute of usage, plus your build |
| Books into your own calendar | Google, Outlook, Square — checks live availability first | Usually yes, via your booking tool | Varies — check which calendars | You build it |
| Knows your business | Reads your website, plus documents you upload | From a script you write and maintain | Varies — script, website, or both | You supply the knowledge base |
| Time to live | Under 10 minutes, self-serve | Onboarding call, then script setup | Minutes to days | Weeks of engineering |
| Phone number | Issued for you in CA, US, IE, GB, AU or NZ | Usually issued for you | Usually issued for you | You buy and configure it |
| Takes a deposit on the call | Yes — Stripe or Square link by text (Pro and Business) | Rarely | Rarely | You build it |
Real people answer, usually briefed from a script you write. They handle nuance, awkward callers and judgement calls better than any AI does, and they always will. The trade is cost and shape: these services typically bill per call or per minute, so a busy month costs more than a quiet one and the price scales with your success.
Choose a human service if your calls are high-stakes or emotionally difficult — a law firm taking distressed callers, a clinic handling sensitive results — or if your call volume is low enough that per-call pricing works out cheaper than a subscription.
The closest comparison, and the honest answer is that several are good. What actually differs between them is the billing axis — flat, per minute, or per unique caller — and how deeply each one connects to the systems you already run. Compare on the integration you cannot live without, not on the demo voice.
Choose one of these instead if it books into a calendar or POS we do not support, if it is built specifically for your industry, or if their billing shape fits your call pattern better than a flat monthly plan.
These are developer platforms rather than products, and they are genuinely powerful. We say so from experience: Open Lines runs on Vapi. What we add on top is everything between a working voice agent and a business phone line — the number, the knowledge base built from your site, calendar availability, deposits, call summaries, and the dashboard.
Build on a platform directly if you have engineers and a workflow specific enough that no product will fit it. You will get exactly what you want, and you will own it for as long as it runs.
Most missed calls do not go to a competitor, they go to voicemail — and most callers do not leave one. This is the option almost every business is really comparing against, and the only one where doing nothing has a running cost that never appears on an invoice.
Stay on voicemail if callers reliably leave messages and you reliably return them the same day. Plenty of businesses do.
Better you find this out here than three weeks in.
You need outbound calling or cold outreach. Open Lines answers inbound calls only.
You need a number in a country we cannot issue one for. Today that is Canada, the United States, Ireland, the United Kingdom, Australia and New Zealand.
You need emergency call handling. Open Lines is not a route to 911, 999 or 112 and must never be used as one.
You want a human on the line. We are AI on every call — that is the product, not a stage we are at.
Your callers need a language we do not support well. Test it on your own calls during the trial before you commit.
Neither is better in general. AI answers every call at a flat monthly cost and books directly into your calendar, which suits appointment-driven businesses with steady call volume. A human service handles nuance and difficult callers better, and bills per call, which can be cheaper at low volume. Choose on your call pattern, not on the technology.
Three things you can check: it builds its knowledge from your own website and uploaded documents rather than a script you maintain; it reads live availability in Google Calendar, Outlook or Square Appointments before offering a caller a time, so it cannot double-book; and it can take a deposit by text during the call on Pro and Business plans.
Plans start at $99/month USD with no setup fee and no contract. The 7-day free trial requires a card and is not charged until the trial ends. Current prices are on the pricing page.
Canada, the United States, Ireland, the United Kingdom, Australia and New Zealand. Irish numbers require a short business verification before activation — that is an Irish regulatory requirement, and we provide a temporary test number while it is reviewed.
No. Open Lines answers inbound calls only. If you need outbound calling or cold outreach, it is the wrong tool and another product will serve you better.
No. You get a dedicated number and can either use it directly or forward your existing line to it, which is what most businesses do.