Pick Vonage if
- You want video meetings from your phone vendor.
- Your developers will build on Vonage's APIs.
Compare / Vonage
Onyx Phone vs Vonage Business Communications
Vonage sells business phone plans per line alongside a large developer platform. Onyx Phone is a simpler shared business phone for small teams, with a lower entry price and unlimited texting on every plan.
Prices side by side
| Plan | Billed monthly | Billed yearly, per month | Charged |
|---|---|---|---|
| Vonage Mobile | $19.99 | $13.99 | Per user |
| Vonage Premium | $29.99 | $20.99 | Per user |
| Vonage Advanced | Not published | $27.99 | Per user |
| Onyx Phone Starter | $17 | $13 | Per user |
| Onyx Phone Business | $29 | $21 | Per user |
| Onyx Phone Scale | $42 | $32 | Per user |
Vonage's list prices from its pricing page, checked on October 24, 2026, before taxes and fees. Prices change, so check theirs before you decide.
What a team of five pays each month
Five people on Onyx Phone Starter cost $85 a month, billed monthly, with a number included for each person. Vonage Mobile is $99.95 a month, billed monthly for the same five people. That is $14.95 more each month, about $179.40 a year.
Vonage prices each line, with lower rates on a yearly term, and adds regulatory fees on top. Onyx Phone prices each user, with a number included for each one.
Where Vonage is stronger
- Video meetings and CRM integrations on Premium.
- A developer platform with voice, video, and messaging APIs.
- A lower yearly price on its Mobile plan.
Where Onyx Phone is stronger
- $17 per user billed monthly, against $19.99 for Vonage Mobile.
- The browser, the iPhone and Android apps, and desk phones on every plan.
- Phone menus on every plan, and call transfers on Business.
- A robocall screen and missed-call text-back.
- Unlimited texting for each user.
Which one fits
Pick Onyx Phone if
- You want a lower monthly price without a yearly term.
- You want desk phones and the browser on the entry plan.
Switching from Vonage
Start a 7-day free trial and you get a temporary local number right away, so calls work while your Vonage number moves over. Moving the number is free and usually takes 3 to 7 business days once you sign. Keep your Vonage service until the move is done. How to move your number from Vonage covers the account number and PIN it asks for.
Questions
How do I move my number from Vonage?
The Vonage porting guide covers business accounts.
Does Onyx Phone have an API like Vonage?
Yes, a smaller one: read calls, voicemails, and texts, send texts, and get signed webhooks. See the API.
Included on every plan
Starter is $17, Business is $29, Scale is $42 per user a month, or less billed yearly. The plan includes a business number for each user and unlimited calling and texting in the US and Canada. Every plan starts with a 7-day free trial, and moving your current number over is free.