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WhatsApp and SMS

WhatsApp Cloud API vs Z-API vs Twilio

WhatsApp Cloud API, Z-API, Twilio side by side: price, free tier, who each one fits and when to skip it.
Item
WhatsApp Cloud API
Z-API
Twilio
What it doesMeta's own API for sending and receiving WhatsApp messages from your app, hosted by Meta and billed per delivered message.Brazilian REST API that connects a regular WhatsApp number to your app for a flat monthly fee, outside Meta's official API.Developer API for SMS, WhatsApp, voice and email, with SDKs in every major language.
Best forA SaaS that sends login codes and billing reminders on WhatsApp and wants the lowest official rate with no middleman fee.An early MVP that needs to send free-form WhatsApp messages today, with no template approval and no per-message cost.A SaaS selling in several countries that wants SMS and official WhatsApp behind one API and one bill.
Skip it ifYou need to launch this week: every outbound template has to be approved by Meta and the business needs a verified Meta Business account.WhatsApp is core to your product: it isn't Meta's official API, so the number can get banned and you lose the channel overnight.Almost all your volume is WhatsApp: Twilio adds $0.005 to every message, sent or received, on top of Meta's rate.
SetupNeeds a developer. A first test message in an afternoon; plan 1 to 2 weeks for business verification and approved templates before real customers.Needs a developer. Same day: no business verification or template approval; the first message goes out in minutes.Needs a developer. First test message in an hour; plan 1 to 2 weeks for Meta approval on WhatsApp and up to 10 weeks if you want a US short code.
PricePer delivered message to US numbers: $0.0034 for utility, authentication and service, $0.025 for marketing.R$99.99/month per instance (number); R$89.99 each from 10 instances.WhatsApp: Meta's rate + $0.005 per message sent or received. SMS to the US: $0.0083 per segment plus carrier fees.
What it costs in practiceSaaS with 500 US customers: 4 billing reminders each is 2,000 utility messages × $0.0034 = $6.80. Plus 1,500 support replies: 1,000 free, 500 × $0.0034 = $1.70. About $8.50/month, estimated.One number for reminders and support: R$99.99/month whatever the volume, or R$1,079.89 paid yearly. A SaaS where 10 customers each connect a number pays 10 × R$89.99 = R$899.90/month, estimated.SaaS sending 2,000 WhatsApp reminders and getting 500 replies: 2,500 × $0.005 = $12.50 to Twilio, plus Meta's rate on the 2,000 sent. Add 300 SMS codes × $0.0599 ≈ $18. About $30/month plus Meta, estimated.
Free planNo monthly fee; 1,000 free service messages per number each month, then you pay per message.2-day free trial with no credit card; then a monthly fee per number.Free trial with no credit card; after that you pay per message.
Price per message$0.0034 (utility) to $0.025 (marketing), USNo per-message fee; R$99.99/month per numberMeta + $0.005 (WhatsApp); $0.0083 US SMS
Official WhatsApp APIYes, it's Meta's ownNo, unofficial alternativeYes, official Meta partner
ChannelsWhatsApp onlyWhatsApp onlySMS, WhatsApp, voice, email
Open sourceNo: noNo: noNo: no
Before you build
  • A new business can only start conversations with 250 different people in 24 hours. It rises to 2,000 only after Meta verifies your business or you send 2,000 good template messages in 30 days.
  • Outside the 24-hour window after the customer's last message you can only send pre-approved templates. Free-form text is blocked.
  • If Meta decides your 'utility' template is really marketing, it switches the category with one day's notice and you start paying the marketing rate, about 7 times more in the US.
  • Since October 1, 2026, support replies beyond the 1,000 free per month and utility messages sent inside the 24-hour window are charged.
  • Rates follow the recipient's country code, not where your company is: a marketing message costs $0.025 to a US number and $0.1365 to a German one.
  • WhatsApp's terms forbid using the service through automated or unauthorized means and allow WhatsApp to disable the account. A ban hits your number, not Z-API.
  • Z-API's own docs say no practice is 100% effective at avoiding bans, and that messaging many different contacts in a short time raises the chance of being flagged as spam.
  • Some blocks come with no appeal option at all; Z-API's docs say there is nothing they can do in that case.
  • The QR code expires every 20 seconds and some phones ask for an extra passkey check, so letting your customers connect their own number needs a careful screen.
  • Twilio's $0.005 fee applies to every WhatsApp message, received ones included, on top of Meta's rate. Failed messages cost $0.001 each.
  • In the US, a regular long code can't send automated texts from your app until your brand and campaign pass A2P 10DLC registration, and carriers can charge fees for non-compliant traffic.
  • Some countries swap your sender for a random number when you text from abroad, so customers don't recognize who wrote. Check each country's rules before you launch there.
  • On the trial you can't create your own WhatsApp templates and can only message verified numbers, so you can't test with real customers.
Price checked

Checked on Oct 28, 2026 · official pricing

Checked on Oct 28, 2026 · official pricing

Checked on Oct 28, 2026 · official pricing

Prices are read from each official pricing page on the date shown and can change. Always confirm before signing up.

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