The short answer
OpenPhone, rebranded as Quo in 2025, publishes three plans at $15, $23, and $35 per user per month on annual billing. Add-ons: $5 per extra number, $19.50 plus $1.50-$3 monthly for 10DLC texting, $0.01 per automated SMS segment, and credit-priced international calls. Sona AI covers 10 calls free, then $25-$199 a month.
Key takeaways
- OpenPhone, now Quo, costs $15-$35 per user per month on annual billing, $19-$47 monthly.
- Budget the add-ons: $5 per extra number, $19.50 10DLC setup plus $1.50-$3 monthly, $0.01 texts.
- Sona AI includes 10 free calls monthly; paid bundles price out at $0.33-$1.00 per call.
- A five-person Business team with Sona and extra numbers lands near $177 a month, not $115.
- If calls go unanswered, a better phone system fixes nothing; that is the AI agent case.
OpenPhone, which rebranded as Quo in 2025, publishes three plans: Starter at $15 per user per month, Business at $23, and Scale at $35, all on annual billing. Pay month to month and the same plans run $19, $33, and $47. Every price in this guide comes from the vendor's own pricing page, checked the week of publication.
| Plan | Per user, annual billing | Per user, monthly billing | Best for |
|---|---|---|---|
| Starter | $15/mo ($180/yr) | $19/mo | Solo operators and pairs who need a shared business number |
| Business | $23/mo ($276/yr) | $33/mo | Teams that want recording, IVR, and CRM integrations |
| Scale | $35/mo ($420/yr) | $47/mo | Larger teams that need onboarding help and phone support |
A 7-day free trial covers all three plans. The sections below go through what each plan includes, the fees that stack on top of the sticker, what the Sona AI answering credits cost in practice, and two worked monthly invoices.
The OpenPhone-to-Quo rebrand, in one minute#
OpenPhone the company is now Quo. The product, the team, and the legal entity (OpenPhone Technologies, Inc.) are unchanged; the name, the site, and the app are new. The pricing page is fully Quo-branded, with the schema still listing "OpenPhone" as an alternate name.
Why it matters for your search: most of the buying guides ranking today still say OpenPhone, because that is what people still type. Search volume tells the story: "openphone" is searched roughly twenty times as often as "quo," though the gap has closed every month since the rebrand. This guide uses both names. When a vendor page or your invoice says Quo, it is the same product your research calls OpenPhone.
OpenPhone's three plans, plan by plan#
Starter: $15 per user per month, annual#
Starter covers one local or toll-free number per user, unlimited calling and messaging to US and Canadian numbers (subject to a fair-use policy), voicemail transcripts, and the Quo API. Call recording is manual rather than automatic, shared numbers cap at 10 paid users, and support is email tickets.
Who it fits: a solo operator or a two-person shop that mainly needs a professional number that rings everyone's cell. What to know: the features most teams associate with a modern phone system (auto-recording, IVR menus, CRM integrations, analytics) all live one tier up.
Business: $23 per user per month, annual#
Business is the plan Quo marks most popular, and it is where the product gets useful for a busy team: AI call summaries and transcripts on all calls, automatic recording, phone menus (IVR), call transfers and group calling, analytics, live chat support, and the integration wall: HubSpot, Salesforce, Zoho, Pipedrive, Attio, Clio, Jobber, Gong, and HighLevel. This is also the tier where HIPAA-ready terms kick in.
Who it fits: teams of three to twenty who live in a CRM and want calls logged without manual work. What to know: at $33 month to month, the annual discount ($120 per user per year) earns its keep; a five-seat team saves $600 a year by committing.
Scale: $35 per user per month, annual#
Scale adds AI call tags, a dedicated onboarding rep, priority support, and inbound phone support on weekdays. It is aimed at larger rollouts where a botched migration costs more than the plan.
Who it fits: teams past ten seats, or anyone porting a meaningful call flow who wants a human on the other side during setup. What to know: the feature gap from Business is thin; you are mostly buying onboarding and support, so price the help, not the feature list.
The fees that stack on top of the plan price#
The per-seat price is the floor. Quo's own checkout and docs pages list the extras:
- Additional numbers: $5 per number per month, billed annually. One local or toll-free number per user is included; the second line for the marketing line or the after-hours line is not.
- A2P 10DLC registration: $19.50 one-time to The Campaign Registry, plus $1.50 to $3 per month in messaging fees. Any business texting US numbers from an app pays this somewhere; Quo at least itemizes it.
- Automated SMS: messages sent through the API, Zapier, or Make cost $0.01 per outgoing segment. A four-part appointment-reminder sequence to 500 contacts is 2,000 segments, or $20.
- International calling and messaging: credit-based, per-minute and per-message rates that vary by destination. There is no flat international bundle.
- Taxes and fees: added at checkout, on top of the published prices.
One more ceiling worth knowing: the "unlimited" calling and messaging carries a fair-use asterisk. Quo does not publish the thresholds on the pricing page; third-party coverage cites roughly 3,000 messages and 1,000 calling minutes per user per month before the policy bites. A team sharing a number for normal business traffic will never touch it. A team planning to run outbound volume through a shared number will.
Sona AI: what the AI receptionist costs#
Every plan includes Sona, Quo's AI answering agent, as a credit bundle: 1,000 free credits per month, and one answered call burns 100 credits. That is ten calls.
Past ten calls, you buy bundles:
| Monthly bundle | Credits | Calls included | Overage per call |
|---|---|---|---|
| Free with plan | 1,000 | 10 | $1.00 |
| $25 | 4,000 | 40 | $0.75 |
| $49 | 10,000 | 100 | $0.65 |
| $99 | 25,000 | 250 | $0.55 |
| $199 | 60,000 | 600 | $0.45 |
Worked into per-call terms, the bundles price Sona between $0.63 and $0.33 per call, with overage running higher if you blow past the bundle. A front line getting 100 overflow calls a month pays $49 on top of the plan. That is honest pricing for AI answering, and it is priced per call, which is the number to hold onto when you compare it against per-minute AI agents later in this guide.
What a monthly invoice looks like#
Sticker prices are for comparison charts. Here are two invoices closer to what leaves your bank account.
Scenario 1: solo operator on Starter, annual billing. One seat, one extra number for marketing, 10DLC registration so appointment texts deliver.
| Line item | Cost |
|---|---|
| Starter, 1 user, annual | $15/mo |
| Extra number | $5/mo |
| 10DLC messaging fee | $1.50/mo |
| 10DLC registration (month 1 only) | $19.50 once |
| Steady state | $21.50/mo |
First month lands at $41; after that, $21.50. The $15 headline is accurate if you need exactly one number and never text at volume.
Scenario 2: five-person team on Business, annual billing, with Sona covering overflow. Five seats, two extra numbers, 10DLC, and the 100-call Sona bundle.
| Line item | Cost |
|---|---|
| Business, 5 users, annual | $115/mo |
| 2 extra numbers | $10/mo |
| 10DLC messaging fee | $3/mo |
| Sona 100-call bundle | $49/mo |
| 10DLC registration (month 1 only) | $19.50 once |
| Steady state | $177/mo |
The comparison-chart math says $115. The working number is $177, 54% above sticker, and that still assumes nobody calls internationally and automated texting stays quiet.
Hear what answers the phone
Rezora IO's AI agent picks up every call, qualifies the caller, and books the appointment on your calendar. Book a demo and call it yourself.
Book a demoOpenPhone vs an AI calling agent#
Everything above prices a phone system: software that makes the calls your team already answers cheaper and better organized. Scenario 2's $177 buys five humans a good phone, plus 100 AI-answered overflow calls. The humans still carry the conversation load, and every call after the Sona bundle is a human's problem again.
An AI calling agent prices the other way: no seats, a flat platform fee, and per-minute usage. Rezora IO, for reference, is $289 per month plus $0.20 per conversational minute, and a minute only counts while the agent is talking with someone. Put the same 100 overflow calls on Rezora IO at three minutes each and the month is $289 plus $60 of usage: $349, with no seats, no bundles, and no ceiling on which calls get handled. It also works outbound, calling new leads back in seconds and working aged lists, which a shared-number phone system is not built to do.
The difference that matters more than the math is the model. Quo's Sona, like most built-in answering features, is a prompt layered on a general-purpose model. Rezora IO trains its own hosted models (supervised fine-tuning and preference optimization on real sales conversations), which is why it holds up when a caller goes off-script. If your problem is that calls come in and nobody is there to answer them, a better phone system fixes nothing. That is the gap an agent fills.
Who should pick OpenPhone (and who should not)#
Pick OpenPhone if your team answers its phone. For a shared-number team that lives in HubSpot or Salesforce, the Business plan is the best-value seat in this price band, and the published add-ons are itemized honestly enough to budget against.
Do not pick it expecting an outbound engine or an AI front desk. The fair-use policy and 10DLC mechanics make it the wrong tool for call volume, and Sona is an answering safety net, not an agent that qualifies and books. Teams shopping for the second thing should read our JustCall pricing breakdown for the dialer-suite angle, the Aircall and Kixie guides for the same seat math at other vendors, or our Retell AI pricing guide for what per-minute agent platforms cost.
FAQ#
Is OpenPhone the same company as Quo?#
Yes. OpenPhone rebranded as Quo in 2025. The legal entity is still OpenPhone Technologies, Inc., the product is unchanged, and openphone.com redirects to quo.com. Older guides saying "OpenPhone" and new invoices saying "Quo" describe the same phone system.
How much does OpenPhone cost per month?#
$15 to $35 per user per month on annual billing, or $19 to $47 month to month, per the vendor's pricing page. Budget add-ons on top: $5 per extra number, $19.50 plus $1.50-$3 monthly for 10DLC texting registration, and credit-based international rates.
Does OpenPhone have a free plan?#
No. Quo offers a 7-day free trial on all three plans, but there is no permanent free tier. The cheapest working setup is one Starter seat at $15 per month on annual billing.
What does OpenPhone charge for international calls?#
International calling and messaging are billed from credits at per-minute and per-message rates that vary by destination country. There is no flat-rate international add-on; heavy international teams should price their specific destinations before committing.
Is Sona AI included in every OpenPhone plan?#
Yes. Every plan includes 1,000 Sona credits per month, which covers about 10 answered calls at 100 credits per call. Higher volumes need a paid bundle: $25 to $199 per month for 40 to 600 calls, with per-call overage on top.
Can you use OpenPhone for cold calling?#
It is not built for that. The fair-use policy caps "unlimited" calling at normal business levels, US texting requires 10DLC registration, and the product is organized around shared inbound numbers and team messaging. Outbound teams need a dialer or an AI calling agent instead.
