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Comparison

OpenPhone vs Google Voice: which business number?

Reviewed by Sujan ThapaliyaLast updated

The short answer

Google Voice is free for personal use and cheap through Workspace, and it is the lightest way to get a second number. OpenPhone costs per user and is built for a team — shared numbers, a shared inbox, proper business messaging. The trade is price against whether more than one person needs to see the conversation.
Flat per-seat licensing plotted against metered usage over connected minutes: the licence is $750 a month regardless of use, metered calling starts at zero and rises at $0.020 a minute, and the two only meet at 37,500 connected minutes. Where your team sits on this chart decides most comparisons of this kind.
Most comparisons in this area resolve to volume rather than features.

Side by side

What is the difference between openphone and google voice?

The differences that change a decision, not a feature checklist.

OpenPhoneGoogle Voice
CostPer user, monthlyFree personal; low per-user through Workspace
Shared numbersYesRing groups only, no shared inbox
Team messaging on a numberYes, with internal notes and assignmentLimited
Business SMSYes, with 10DLC registration handledRestricted, and not in every plan or country
IntegrationsCRM and helpdesk integrationsGoogle Workspace only
AvailabilityBroadPersonal accounts are US-centric
Outbound dialling modesNoneNone

Which to choose

Which one should you use?

Google Voice for a second number at near-zero cost

One person, light use, already living in Google Workspace. It is genuinely hard to justify paying for a second line when this exists.

OpenPhone once it is a team's number rather than yours

Shared inboxes, assignment and business messaging are the things Google Voice does not do, and they are what a team hits within weeks of trying to share a line.

Neither, if business SMS or outbound volume matters

Google Voice's messaging restrictions catch people out constantly, and neither product has dialling modes. A team sending campaign SMS or working a call list needs a platform that registers 10DLC properly and dials more than one line.

Frequently asked questions

Why does business texting fail on Google Voice?
US carriers filter application-to-person messaging that is not registered under A2P 10DLC, and Google Voice is not positioned as a business messaging platform. Messages can silently fail to deliver, which is worse than being blocked outright because nothing tells you.
Can I port a Google Voice number out?
Personal Google Voice numbers can usually be ported out after unlocking them in settings, for a small fee. Workspace-managed numbers depend on how they were provisioned — check before assuming, because this is where migrations stall.

Sources

  1. Telemarketing Sales Rule — Federal Trade CommissionDo-not-call obligations, abandonment-rate limits for predictive dialing, and required call disclosures.
  2. 47 U.S.C. § 227 — Restrictions on the use of telephone equipment — Cornell Legal Information InstituteThe Telephone Consumer Protection Act itself — the consent requirements, calling-hours limits, and private right of action.
  3. National Do Not Call Registry — Federal Trade CommissionThe registry that outbound calling lists must be scrubbed against.

Run both modes on one platform

You do not have to choose a product to choose a mode. Power, parallel, and predictive dialing are all in the base product; switch per campaign, per list, per hour of the day.

  • Every dialing mode included
  • No seat licences
  • Compliance guardrails on by default
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