OpenPhone vs Stax: which one fits your business?
Side-by-side comparison of OpenPhone and Stax — fees, features, ease, support, and which one fits your business. Scored on the same rubric.
Short answer: it's a tie on our scorecard — pick on fit, not score.
| Scored on | OpenPhone | Stax |
|---|---|---|
| Right fit for small biz | 8 | 9 |
| Ease of use | 7 | 6 |
| Fees & pricing | 8 | 7 |
| Customer support | 5 | 7 |
| Features | 9 | 9 |
| Starter Plan (Annual) | $15/user/mo | — |
| Business Plan (Annual) | $23/user/mo | — |
| A2P 10DLC Registration | Varies by carrier | — |
| Additional Numbers | $5/mo | — |
| Monthly Subscription | — | Starting at $99 |
| Interchange Markup | — | 0% |
| ACH Processing | — | Flat fee (varies by plan) |
| PCI Compliance | — | Included in subscription |
OpenPhone in one paragraph
OpenPhone is the best-in-class choice for tech-forward small teams that prioritize collaboration, provided they can navigate the strict 2026 messaging compliance rules.
Skip it if: Skip it if your business relies on high-volume outbound SMS marketing or if you require immediate 24/7 live phone support for troubleshooting.
Stax in one paragraph
Stax is the premier 'grown-up' choice for high-volume businesses that are tired of losing thousands to percentage-based markups.
Skip it if: You process less than $5,000 per month or need an instant, no-credit-check setup.
Frequently asked questions
Who should skip OpenPhone?
Skip it if your business relies on high-volume outbound SMS marketing or if you require immediate 24/7 live phone support for troubleshooting.
Who should skip Stax?
You process less than $5,000 per month or need an instant, no-credit-check setup.