Quo (OpenPhone) vs. Dialpad vs. RingCentral: Which Business Phone System Fits a Small Team?

The pricing page says $15 per user per month. Your first invoice says something else — a higher monthly rate because you didn't prepay a year, a per-text overage because your team actually texts customers, and an AI add-on that turned out to be a separate product. None of the three most-compared small-business phone systems lies about its price, but all three price the thing you assumed was included a little differently.

This guide compares Quo (the company you may still know as OpenPhone), Dialpad, and RingCentral on the four questions that actually decide the bill: price per user, texting, AI call features, and integrations. Prices below are per user per month in US dollars, as published on the vendors' own pages in October 2026.

The Short Answer​

If you only have sixty seconds:

• Quo is the simplest buy for a small team that shares numbers and texts customers. Entry plan is the cheapest of the three with unlimited calls and texts to the US and Canada, and there are no seat minimums.
• Dialpad is the pick when AI on every call is the point — real-time transcription and recaps are included from the cheapest plan up, not sold as an add-on.
• RingCentral is the pick when one system has to cover phones, meetings, and a deep integration stack. It costs more per seat, meters texting tightly, and sells its fancier AI separately.

The rest of this post unpacks each row, because the footnotes are where the money goes.

First: OpenPhone Is Now Quo​

If you comparison-shop and find a provider called Quo where OpenPhone used to be, nothing went wrong. OpenPhone rebranded to Quo in September 2025, alongside a $105 million funding round and the launch of Sona, its AI voice agent. Same company, same apps, same phone numbers — existing accounts carried over, and the old OpenPhone web addresses redirect to the new site.

Why this matters for your search: reviews and roundups written before late 2025 say "OpenPhone," and current ones say "Quo." They are describing the same product. When you read older praise for OpenPhone's shared inbox or its startup-friendly pricing, it applies to Quo today.

Price Per User: The Sticker vs. the Real Bill​

All three vendors advertise their annual-billing price most prominently. The gap between annual and monthly billing is the first surprise, and seat minimums are the second.

Quo has three plans: Starter at $15 per user annually ($19 monthly), Business at $23 ($33 monthly), and Scale at $35 ($47 monthly). There is no seat minimum, which makes it the friendliest of the three for a team of two or three. The practical catch is that CRM integrations with HubSpot and Salesforce, plus AI call summaries and phone menus, start on Business — so a team that needs its calls logged to the CRM is really shopping at $23, not $15.

Dialpad prices its Connect phone product in two main tiers: Standard at $15 per user annually ($27 monthly) and Pro at $25 ($35 monthly). That monthly-billing markup — $12 more per seat — is the steepest of the three, so month-to-month buyers should budget on the $27 figure. Pro also carries a three-seat minimum, which rules it out for a two-person shop unless you pay for a seat nobody uses.

RingCentral's RingEX runs Core at $20 annually ($30 monthly), Advanced at $25 ($35 monthly), and Ultra at $35 ($45 monthly). CRM integrations start on Advanced, automatic call recording starts on Advanced (Core only records on demand), and toll-free minutes are capped at 100 on Core versus 1,000 on Advanced. Two more billing details worth knowing before you sign: the contract auto-renews unless you give 30 days' notice, and contact-center seats (RingCX) are a separate product from about $65 per agent.

A fair way to compare: price the tier that includes the CRM integration you need, on the billing term you will actually use, for your actual seat count. On that basis, a five-person team paying annually lands near $115/month with Quo Business, $125/month with Dialpad Pro, and $125/month with RingCentral Advanced — much closer than the three entry stickers suggest.

Texting: Where the Three Diverge Most​

If your team texts customers — appointment reminders, delivery updates, "running ten minutes late" — this section may decide the whole comparison, because the texting allowances differ by an order of magnitude.

Quo includes unlimited messaging to US and Canadian numbers on every plan, subject to a fair-use policy. One shared number can ring up to ten teammates, and the shared inbox means any of them can pick up the text thread. For a service business that lives in SMS, this is Quo's single biggest advantage. Note the boundary: the unlimited allowance covers the US and Canada, and international texting is an add-on.

Dialpad includes SMS and MMS, but outbound texting is capped (about 250 messages per user per month, with per-message overage beyond that) and limited to US and Canadian customers. Teams with modest texting volume will never notice; a dispatch-heavy operation will want to model the overage before committing.

RingCentral meters texting the most tightly: 25 SMS/MMS per user per month on Core, 100 on Advanced, and 200 on Ultra, with overage billed per message (a fraction of a cent each, which still adds up across a team that texts all day). Twenty-five texts per user is roughly one outbound text per business day — a team that confirms every appointment by text will blow through the Core allowance in the first week and should price Advanced or an SMS booster from the start.

The pattern to remember: Quo treats texting as part of the phone, Dialpad treats it as an included-but-bounded feature, and RingCentral treats it as a metered resource. Match that to how your team actually communicates, not to how the demo call goes.

AI Call Features: Included vs. Add-On​

Every provider now sells AI, but "AI included" means very different things across the three.

Dialpad built its reputation here: real-time transcription, voicemail transcription, and AI-generated recaps with action items are included on every Connect plan, including the $15 Standard tier. Live coaching cues during calls are part of the same package. The thing that costs extra is a different product — AI agents that autonomously handle customer conversations — which is sold separately on per-conversation pricing.

Quo bundles Sona, its AI voice agent, into its plans, with AI call summaries and transcripts arriving on Business and up. The Starter plan covers the phone basics; teams buying specifically for AI notes should note that the full AI set sits at the $23 tier, not the $15 one.

RingCentral now includes an AI Assistant in RingEX at no extra charge — real-time note-taking, call summaries, message drafting, and translation. But the two headline AI products remain paid add-ons: the AI Receptionist (which answers, routes, and handles FAQs) costs about $39 per month, and the sales-conversation intelligence product runs about $60 per user per month. A small team that wants an AI front desk on RingCentral should add that $39 to every plan comparison.

The honest question to ask each vendor's sales page: which AI features work on the tier I'm buying, on the day I sign up, with no second checkout? Dialpad's answer is the longest; RingCentral's has the most asterisks.

Integrations: 24 vs. 70 vs. 500​

The integration counts look lopsided until you ask which integrations your team will actually connect.

RingCentral lists 500 or more pre-built integrations — Salesforce, HubSpot, Zendesk, Microsoft Teams, Google Workspace, and long tail of industry tools — plus an API for custom builds. If your phone system must plug into an established stack with several systems of record, this depth is RingCentral's strongest argument. Remember that the CRM integrations unlock on Advanced ($25), not Core.

Dialpad offers 70 or more integrations, with native Salesforce, HubSpot, and Zendesk sync generally gated to Pro and up — confirm the current tier boundary on the live pricing page, since vendors move it. Enough for the standard small-business stack (CRM, helpdesk, calendar, Slack), though thinner than RingCentral's catalog for specialized tools.

Quo keeps about two dozen native integrations — HubSpot, Salesforce, Pipedrive, Slack, and similar — starting on the Business plan, and reaches thousands more through Zapier and Make. For a team whose stack is a CRM plus a handful of apps, the native list plus one automation account covers it; for a team with unusual or regulated tooling, verify each connector exists before you migrate numbers.

One practical note: count the integrations you need that require a specific tier, then re-check the price section. CRM sync is the feature most likely to push a buyer one tier up on all three platforms.

Booking the Phone Bill: Keep Per-Seat Costs Visible​

Whichever system you pick, the phone bill deserves its own line in your books rather than vanishing into a general office-expenses bucket. Per-seat SaaS spending is exactly the kind of cost that creeps — a forgotten seat here, an add-on there — and a dedicated account makes the creep visible at tax time and at every renewal.

A plain-text ledger entry for the monthly charge looks like this:

2026-10-01 * "Quo" "Business plan — 6 seats, October"
  Expenses:Office:Phone:Quo                       138.00 USD
  Assets:Checking:Business

If seats serve different functions, split them so each department carries its share:

2026-10-01 * "Dialpad" "Pro plan — 5 seats, October"
  Expenses:Office:Phone:Dialpad:Sales               75.00 USD
  Expenses:Office:Phone:Dialpad:Support             50.00 USD
  Assets:Checking:Business

Two habits pay off. First, reconcile the seat count on each invoice against your actual team — leavers whose seats were never deprovisioned are the most common leak. Second, book add-ons (AI receptionist, SMS boosters, toll-free overages) to sub-accounts of the same phone account rather than to generic software spend, so the renewal conversation starts from the true all-in number. If you want to see the trend, the Fava dashboard charts any expense account over time, which turns "the phone bill feels higher" into a number. The bookkeeping docs cover account structure in more depth if you are setting up department splits for the first time.

How to Choose: A Five-Question Decision Guide​

Work through these in order; most teams have a winner by question three.

1. How much do you text? Heavy US/Canada texting with shared numbers points to Quo. Light texting keeps all three in play. International texting needs a closer look at add-ons on any of them.
2. Is AI transcription the reason you're switching? If yes, Dialpad includes the most AI at the lowest tier. If AI is a nice-to-have, Quo's Business tier or RingCentral's included Assistant covers it.
3. What must the phone plug into? One CRM plus common apps: any of the three (verify the tier). A deep or unusual stack: RingCentral's catalog earns its premium.
4. How many seats, and how will you pay? Two seats on monthly billing strongly favors Quo (no minimum, smallest monthly markup). Five-plus seats prepaid annually makes the three surprisingly close on price.
5. Who answers when nobody can? If you want an AI receptionist, price it explicitly: bundled differently on Quo, a separate conversation-based product on Dialpad, and a $39 add-on on RingCentral.

Then run the trial like a trial: port nothing, connect the CRM integration on day one, send a week's worth of real text volume through it, and read one AI summary per call type you take. The provider whose trial week looks most like your normal week is the right one — sign the annual plan only after that week, not before.