How much it costs to run 10, 25 or 50 WhatsApp numbers in 2026
Anyone running many numbers finds out that the price per number matters more than the price of the first connection. On ZapZap the math is R$15 per active number per month, prepaid, with no per-message fee and no volume tier: the 50th number costs the same as the first. This guide does the math for 10, 25 and 50 numbers and sets it beside other vendors' public prices, always with the source and the date of the check. We are an interested party, so where another vendor comes out cheaper, we say so.
Published on · 5 min read
ZapZap's math: multiplication, no tiers
| Active numbers | Monthly (R$15 per number) | Per year |
|---|---|---|
| --- | --- | --- |
| 5 | R$75.00 | R$900.00 |
| 10 | R$150.00 | R$1,800.00 |
| 25 | R$375.00 | R$4,500.00 |
| 50 | R$750.00 | R$9,000.00 |
The price is prepaid, with no lock-in and no per-message fee, so the cost does not grow with each client's message volume. When each instance is created there is a one-time activation fee (currently R$3 per number, which you confirm beforehand at GET /instances/cost) (the calculator mentions this item as part of what the math does not include). A removed number stops being billed. See the current price on pricing.
What other vendors publish, with source and date
The data below comes from each vendor's public pages and is already detailed in our comparisons. Prices change: recheck on the day you buy. Currencies appear as each page states them, with no conversion.
| Vendor | What the page says | Source and date |
|---|---|---|
| --- | --- | --- |
| ZapZap | R$15 per active number per month, prepaid, no per-message fee | zapzapapi.com/precos |
| Z-API | R$99.99 per channel per month on the Omni plan (up to 9 channels); R$89.99 per channel on the Partner plan (10 channels or more). The page does not define whether a channel equals one number | z-api.io, Nov 11, 2026 |
| WasenderApi | Business plan with 10 numbers at $45 per month ($4.50 per number); Pro with 3 at $15; Plus with 6 at $30. Larger volume through the Partner Program. The page does not name the currency | wasenderapi.com, Nov 11, 2026 |
| Wassenger | Professional US$39.90, Business US$69.90 and Enterprise US$99.90 per month, each plan with 1 number included | pricing page, Nov 8, 2026 |
Details and caveats for each one are in the comparisons ZapZap vs Z-API, ZapZap vs WasenderApi and ZapZap vs Wassenger.
Applying it to 10, 25 and 50 numbers
For Z-API, the only multiplication the page itself supports is per channel. If each channel corresponds to one number, 10 channels on the Partner plan (R$89.99) would be R$899.90 per month, 25 would be R$2,249.75 and 50 would be R$4,499.50. Since the page does not define channel, confirm with the vendor before using this math. On ZapZap, the same sequence is R$150, R$375 and R$750.
For WasenderApi, the page shows $45 per month for 10 numbers and points larger volumes to the Partner Program, with no published price for 25 or 50. In dollars, the price per number on the 10-number plan is $4.50. Convert to reais on the day you buy and also compare what each one includes. For Wassenger, each plan includes 1 number, and the page gives no math for multiple numbers; ask for a quote.
What the per-number monthly fee does not show
Compare by operation, not just by monthly fee. Items that change the real cost: whether the vendor charges per message, whether there is a message limit, whether there is an activation fee, who runs the infrastructure, whether support is in Portuguese, whether the dashboard includes AI and ready-made automations and whether the channel is official or not. In the comparisons, each line carries its source.
ZapZap is an unofficial API: WhatsApp may limit or block numbers, and that costs replacement chips. Set aside a replacement margin in the operation's budget, whichever unofficial vendor you use. If your case requires the official channel, the math changes in nature: see the official API and the per-message calculator.
What about hosting it yourself (Evolution, WAHA)?
The software is free, but running it is not: a server that stays on, a database, backups, updates when WhatsApp changes and someone on call. With many numbers and an idle infrastructure team, hosting can come out cheaper; with a small team, engineering time weighs more than R$15 per number. Build your own math with the formula in real cost (TCO) of hosting vs a managed API and read the three-way comparison.
How to build your margin if you resell
If you are an agency or reseller, your cost per client is one line: number of instances times R$15, plus the one-time activation of each new instance and the expected replacement. The sale price is yours. Since there is no per-message fee, the margin does not shrink when the client sends more, and since there are no tiers, it does not change as you grow. See the pages on resale under the client's brand and agencies.
Quick summary
- ZapZap: R$15 per active number per month, so 10 numbers are R$150, 25 are R$375 and 50 are R$750, with no tiers and no per-message fee.
- There is a one-time activation fee per instance created, checked beforehand at GET /instances/cost.
- Other vendors' prices are those on their pages in November 2026, in the original currency: recheck before buying.
- WasenderApi shows $4.50 per number on the 10-number plan; compare on the day, in reais, and what each plan includes.
- With any unofficial vendor, set aside a budget for chip replacement.
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Frequently asked questions
Does the price per number drop if I have 50 numbers?
No. The price is R$15 per active number per month for any quantity, with no tiers. The upside is predictability: the 50th number costs the same as the first.
Is there a per-message fee?
No. The price is per active number, prepaid, with no per-message fee and no lock-in.
What is the activation fee?
It is charged once when each instance is created, along with the prorated amount for the first month. The current amount appears before you create, at GET /instances/cost.
Isn't WasenderApi cheaper?
In dollars, its page shows $4.50 per number on the 10-number plan (Nov 11, 2026), and the page does not name the currency. Compare in reais on the day you buy and check what each one includes, such as support language, AI, funnel and dashboard.
Are the other vendors' prices up to date?
They reflect the check on the dates indicated (November 8 and 11, 2026). Vendors change prices without notice, so recheck each one's official page before deciding.
Does the math include chip replacement?
No. ZapZap is an unofficial API and WhatsApp may limit or block numbers. Set aside a budget for replacement, whichever vendor you use.
Run the numbers with your own count
See the cost per number, create the account and connect the first one. R$15 per active number per month, prepaid, no per-message fee. There is a welcome credit when you verify your phone, subject to the current campaign.