Twilio vs Sinch: US Rates, Channels and Fit

Half a cent per ten texts. That's the list-price gap between these two on US 10DLC SMS, before anyone has negotiated anything. So don't pick on the SMS rate alone. The real differences show up elsewhere: what's priced in public, which channels sit behind one API, and whether a marketer can run it without filing a ticket with engineering. This comparison sticks to published US rates and says plainly where a vendor doesn't publish one.

The short answer

• Choose Twilio for product and engineering teams that want public pricing across SMS, RCS, WhatsApp, voice and verification, on a pay-as-you-go account.
• Choose Sinch for lower-rate 10DLC and toll-free traffic, an API that reaches 13 channels, or a marketing team that wants a texting app with plans instead of an API.
• Get a quote from both at high volume. Twilio sells committed-use discounts and Sinch offers custom pricing, and neither set of numbers is public.

Twilio vs Sinch at a glance

US pricing as of November 2026

Both vendors bill by usage and say prices can change without much warning. Twilio's page warns that prices may change without notice, and Sinch says it aims to update prices at midnight UTC and that the price at the time of use applies. Read the current Twilio US SMS pricing and Sinch SMS pricing before you budget.

The billing unit matters more than the fourth decimal place. Twilio charges SMS per 160-character segment, so a long message costs more than one segment. Sinch's price page says "per outbound message" and doesn't spell out how it counts a multi-part message, so ask before you model a program full of long texts.

What you pay on top of the rate

Carrier fees

Neither rate is the whole cost. Outbound long code (10DLC) SMS carries the same published carrier fees at both: $0.0035 for AT&T, $0.0045 for T-Mobile and $0.005 for Verizon. Sinch's carrier fee table lists many smaller networks too, and calls its figures indications to confirm with an account manager.

Here's what that does to a real send. Take 10,000 one-segment texts over 10DLC to Verizon numbers. Twilio: $83 in message fees plus $50 in carrier fees, so $133. Sinch: $78 plus $50, so $128. That's $5 on 10,000 messages at list price, before number fees and registration.

10DLC registration

US long code senders have to register a brand and a campaign, and both vendors pass on those fees. Twilio lists $4.50 one-time for Sole Proprietor and Low Volume Standard brands, $46 for a Standard brand (including secondary vetting), a $15 campaign vetting fee, and monthly campaign fees of $10 for standard use cases, $2 for Sole Proprietor and $1.50 for low-volume mixed. Sinch lists a $4 brand fee, a $15 campaign review fee, $41.50 for standard vetting and campaign fees from $0 to $30 a month, most of them $10, with the first three months charged up front. Toll-free verification is free at both. Sinch's fee article also lists T-Mobile non-compliance penalties, and they're worth reading whichever vendor you pick.

Add-ons and small print

Twilio itemizes more of this. Failed messages cost $0.001 each. The Engagement Suite (link shortening, click tracking and scheduling) is $0.015 per outbound SMS after the first 1,000 free each month, and the Compliance Toolkit is another $0.015 per outbound SMS. If you turned both on, those add-ons would cost more than the message itself. Sinch's SMS API page lists delivery reporting, message scheduling and a testing sandbox as features, and its price page shows no add-on line for them. Confirm what's included before you assume it's free.

Channels

For US marketers the core list is the same: SMS, MMS, RCS, WhatsApp, voice and email. Both also document RCS with automatic fallback to SMS or MMS for devices that can't receive it. Our RCS vs SMS guide explains when that upgrade is worth it, and our roundup of RCS business messaging platforms goes wider.

The gap is reach beyond the US. Sinch's Conversation API connects 13 channels through one integration: SMS, MMS, WhatsApp, RCS, Facebook Messenger, Instagram, Viber, Telegram, KakaoTalk, LINE, WeChat, Sinch Push and Sinch Live Chat. Twilio's messaging menu lists SMS, MMS, WhatsApp, RCS, Facebook Messenger, Chat and Apple Messages for Business. KakaoTalk, LINE and WeChat aren't on it. If South Korea, Japan or China matter to you, that settles a lot.

APIs, no-code tools and email

Twilio is built around developers. Its Programmable Messaging API, voice APIs and SDKs are the product, and Studio ($0.0025 per flow execution) adds a low-code, no-code canvas for building workflows. It also sells a wider stack under one brand: Twilio Segment for customer data and Twilio Engage for multichannel campaigns (both in custom-priced CDP plans), Flex for contact centers ($1 per active user hour or $150 per named user a month), and Conversation Memory, Orchestrator and Intelligence for AI agents, priced largely by characters processed.

Sinch sells APIs too, and it offers something with no match on Twilio's pricing page: a ready-made texting platform with published plans. Sinch Engage (formerly MessageMedia) runs from Basics at $99 a month billed annually or $119 monthly, with 3,000 SMS and one user, up to Advanced at $2,399 a month annually or $2,879 monthly, with 150,000 SMS and three users. Extra SMS on annual plans cost $0.033 on Basics, down to $0.016 on Advanced, which is well above the raw API rate. You're paying for the app. It adds an inbox, automations and integrations such as HubSpot, Salesforce and Shopify, plus a 14-day free trial. Sinch's site also lists SimpleTexting and ClickSend as products.

On email, Twilio has SendGrid (the Email API starts free at 100 emails a day, with paid plans from $19.95 a month) and Twilio Email from $0.0013 per email. Sinch has Mailgun, Mailjet and Email on Acid.

Voice and verification

Twilio charges $0.014 a minute to make a US call and $0.0085 to receive one on a local number ($0.022 on toll-free). Sinch's Voice API pricing starts at $0.01 a minute outbound, rising to $0.0348 for some destinations such as the US Virgin Islands, and lists $0.008 a minute inbound, with calls rounded up to 60-second intervals. Recording is $0.0025 a minute at Twilio and $0.002 at Sinch; answering machine detection is $0.0075 and $0.005 a call. Sinch bills a full call as the sum of its legs, so count each one.

Twilio Verify is $0.05 per successful verification plus a channel fee ($0.0083 per SMS in the US), across SMS, WhatsApp, voice, email, push, TOTP and Silent Network Auth. Sinch's Verification API offers flash call, SMS, data and phone call verification. Its page routes you to sales and shows no public rate.

Who each is for

• Twilio fits software teams adding texts, calls or verification to a product, especially if they want to estimate cost from public pages and start on a trial account. It also fits companies already using Segment or SendGrid.
• Sinch fits developers who need many messaging apps behind one integration, businesses sending high volumes of plain 10DLC or toll-free SMS, and, through Sinch Engage, marketing and service teams who want to text customers without writing code.

Limits of each

• Twilio: add-on pricing stacks up quickly, since link tracking and compliance tools can each cost more than the SMS.
• Twilio: a trial account can only reach verified recipients and expires after 30 days, so it is a test, not a soft launch.
• Twilio: there is no packaged texting plan on its pricing page. A marketing team needs developers, a third-party app, or a custom-priced CDP plan with Twilio Engage.
• Sinch: no public US domestic RCS rate, WhatsApp API rate or Verification API rate, so you can't model those channels without a sales conversation.
• Sinch: its fee articles call their figures indications and say to confirm with an account manager.
• Sinch: Engage is priced for its app, so its per-message cost is well above the API rate.

Which should you choose

Start with who will run this. If engineers are wiring messages into your product, compare Twilio and Sinch's APIs on your actual traffic mix and don't fuss over the half-cent per ten messages. Twilio's public rates make it easier to budget on day one. Sinch's 13-channel API makes it easier if you're going to Asia.

If marketers will run it, Sinch Engage is the more direct fit, because it has a plan with a price on it. Though at that point you should also compare it with SMS marketing tools, not with Twilio. Both vendors advertise high uptime and large carrier networks, measured in ways you can't compare, so skip those claims. Send the same test campaign through both, to your own countries and carriers, and read the delivery reports.

Alternatives worth a look

If you're really buying campaigns and not an API, start with our guide to SMS marketing platforms or, for stores, the best Shopify SMS apps. If text is one channel among several for an app, see our mobile marketing platforms list or our customer engagement platforms comparison. Those tools add journeys and segmentation that a messaging API leaves to you.

Frequently Asked Questions

Is Sinch cheaper than Twilio for US SMS?
On list price, slightly, on 10DLC and toll-free: Sinch publishes $0.0078 per outbound message and Twilio $0.0083 per segment as of November 2026. On short codes it flips: Sinch lists $0.009 and Twilio $0.0083. Carrier fees are added on top at both, and the published fees for AT&T, T-Mobile and Verizon long code traffic match.

Do Twilio and Sinch charge carrier fees?
Yes. Both add per-message carrier fees on top of their own rate. For outbound long code (10DLC) SMS, both list $0.0035 for AT&T, $0.0045 for T-Mobile and $0.005 for Verizon. Sender registration fees for 10DLC are separate.

Which is cheaper for RCS in the US?
It can't be compared from public pages. Twilio publishes US RCS rates: $0.0083 per segment for Rich and $0.022 per message for Rich Media, plus carrier fees. Sinch's RCS price page covers international traffic and says to contact it about domestic traffic. It does publish the US carrier pass-through fees.

Does Twilio or Sinch have a free trial?
Both let you start without a credit card. A Twilio trial lasts 30 days and includes free units such as 100 SMS, 100 WhatsApp messages, 3,000 emails and 75 voice minutes, and you can only message verified recipients. Sinch Build gives you trial credit, API keys and a free virtual number for testing. Sinch Engage has a separate 14-day free trial.

Which is better if my marketing team has no developers?
Sinch has the more direct answer: Sinch Engage is a packaged texting platform with plans, a web app, an inbox and integrations such as HubSpot and Shopify. Twilio's nearest options are Studio, a low-code and no-code visual builder for workflows, and Twilio Engage, which comes inside custom-priced CDP plans.

What does WhatsApp cost on Twilio and Sinch?
Twilio charges $0.005 per message, inbound or outbound, plus Meta's template fee, which starts at $0.0034 per message for utility and authentication messages in the US. Sinch says its WhatsApp API pricing is per message and depends on the initiator, template category and market, without a public API rate. Sinch Engage sells WhatsApp as a $10 a month add-on with 1,000 messages included, then $0.05 each, and says Meta surcharges may apply.