Quo (formerly OpenPhone) vs KaiCalls: the OpenPhone alternative for contractors
KaiCalls is a Quo alternative for contractors who want one flat price instead of per-call credit math. KaiCalls runs $10 to $349 per month and includes the number, Kai answering when you can't, booking, and texting. Quo, the new name OpenPhone took in September 2025, charges $15 to $19 per user a month plus AI credits that grow with call volume.
Quo is a good fit for teams that answer most calls themselves and need HubSpot or Salesforce built in. KaiCalls is a better fit when you want one predictable bill and calls booked into your calendar while the caller is on the line. See Quo's published rates at quo.com/pricing and KaiCalls pricing at /pricing.
Cost Comparison at Real Call Volumes
Quo cost uses its published base price plus the AI credit pack that covers the calls. KaiCalls uses published plan tiers.
| Monthly Volume | Quo Cost | KaiCalls Plan | KaiCalls Cost |
|---|---|---|---|
| 40 calls | $40/mo ($15 base + $25 credit pack) | Kai Line | $79/mo flat (~170 Kai-answered calls/mo) |
| 80 calls | $64/mo ($15 base + $49 credit pack) | Kai Line | $79/mo flat (~170 Kai-answered calls/mo) |
| 160 calls | $114/mo ($15 base + $99 credit pack) | Kai Line | $79/mo flat (~170 Kai-answered calls/mo) |
| 320 calls | $214/mo ($15 base + $199 credit pack) | Kai Office | $349/mo flat (~800 Kai-answered calls/mo) |
Quo cost is the Starter base ($15 per user a month, billed yearly) plus the smallest AI credit pack that covers the calls, as listed on quo.com on November 4, 2026. It assumes AI answers every call. Your actual cost depends on seat count and how many calls go to AI.
Quo, formerly OpenPhone: per-user seats plus AI credits, row by row.
Quo wins on some points. KaiCalls wins on others. Here's the real breakdown.
| What you get | Quo | KaiCalls |
|---|---|---|
| Who answers the call | Your team, in the Quo app. Sona, their AI, can answer when you set it to. | Your cell rings first. Kai, your secretary, picks up when you can’t. |
| Starting price | $15 per user a month billed yearly, or $19 monthly. Includes 10 AI-answered calls a month. | $10/month for ~20 Kai-answered calls/mo. |
| Past the plan | AI calls use credits: $1.00 a call past the free 10, or packs from $25/month for 40 calls to $199/month for 600. | No per-minute or per-call charges on any plan. |
| Per-seat fee | Yes. $19 to $47 per user a month, or $15 to $35 billed yearly. | No per-user fee. Teammates’ cells ring free. A desk phone past your plan is $29/month. |
| Per-minute charges | No for US and Canada calls (unlimited, fair use). Sona AI calls cost $0.45 to $1.00 each past the 10 free a month. | None, on any plan. The price is flat each month. |
| Books appointments | Sona texts the caller a scheduling link. Booking into a calendar is not listed. | Yes, into Google Calendar, on every plan. |
| Texts the caller back | Yes. Sona texts during calls and after missed calls (free during beta). | Yes, on every plan: Kai texts the link or details the caller asked for, once your number is approved for texting. |
| Nights, weekends and busy times | Sona answers 24/7. | Same answer 24/7, and any number of calls at once. No after-hours charge. |
| Contract and cancelling | Monthly or yearly. Cancel anytime in the app. 7-day free trial. | Month to month. 30-day money-back guarantee. |
Quo facts checked November 4, 2026 from Quo pricing, Quo Sona, OpenPhone is now Quo (their blog). Spot something out of date? Tell us and we’ll fix it.
Pick Quo if
- You need a full team phone system with shared numbers, call routing and phone menus.
- You need HubSpot or Salesforce built in (their Business plan and up).
- Your team answers most calls and only a few go to AI. Ten AI calls a month come free.
Pick KaiCalls if
- You want the call booked into Google Calendar while the caller is on the line.
- You want one flat bill, not per-user seats plus AI credits.
- You run a small shop and don’t need a seat for every person.
Common Questions
What is Quo (formerly OpenPhone)?
Quo is the new name for OpenPhone, a business phone app billed per user. As of November 4, 2026, it starts at $15 per user a month billed yearly ($19 monthly). Its AI, Sona, answers calls for credits: 10 calls a month are free, then $1.00 a call or a monthly credit pack. KaiCalls is one flat monthly price that includes the number, Kai answering when you can't, booking into Google Calendar, and texting the caller back.
Is Quo or KaiCalls less expensive for a contractor taking 80 calls per month?
If AI answers all 80 calls, Quo runs about $64 a month for one user ($15 base plus the $49 pack for 100 AI calls). KaiCalls Kai Line is $79/mo flat for ~170 Kai-answered calls/mo. If you answer most calls yourself and only a few go to AI, Quo can come out lower. KaiCalls is the predictable one: no credits and no per-minute or per-call charges.
Do long calls cost more on Quo or KaiCalls?
Neither charges by the minute for answered calls. Quo's AI uses 100 credits per call, whatever the length. KaiCalls is a flat monthly price sized by how many calls Kai answers, with no per-minute or per-call charges.
Does KaiCalls integrate with HubSpot and Salesforce like Quo?
KaiCalls books into Google Calendar and texts callers on every plan. For HubSpot, Salesforce and other CRMs, KaiCalls sends call details through webhooks and Zapier. Quo has HubSpot and Salesforce built in on its Business plan and up. If that is a hard requirement, Quo wins on that point.
Can I try KaiCalls before signing up?
Yes. Call the demo line right now at 1 (802) 232-8873 and hear Kai answer. No signup, no form, no email required. Try Kai in the browser for free. Choose and pay for a plan to activate a real number, live calls, and forwarding. Every paid plan includes a 30-day money-back guarantee.
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