Comparison
Cheapest SMS API:
the real price of one SMS in 2026
SMS APIs advertise a price per message, then add carrier surcharges, registration fees, number rental and per-segment billing. Here are the published prices of seven providers to France and the United States, every fee around them, and the route that costs nothing per SMS: sending from your own phone plan.
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GeminiThe short answer
Which SMS API is the cheapest?
There is no single cheapest SMS API: it depends on the destination. To the United States, Telnyx has the lowest published rate ($0.004 per message plus a carrier fee). To France, Brevo's credits are the cheapest we found (about €0.045 per SMS), while Twilio, Plivo and ClickSend sit between $0.066 and $0.08. Prices are on each provider's pricing page.
The headline price is rarely the bill. US carriers add a surcharge of $0.0035 to $0.005 to every message, sending from a US 10-digit number requires A2P 10DLC registration ($4.50 brand fee and $41.50 vetting at Twilio), and a message longer than 160 characters, or 70 with a single emoji, is billed as several segments.
There is a cheaper route for messages to people who know you: send from the SIM card of your own phone. In France, a Free Mobile plan at €2 a month includes unlimited SMS in mainland France. Unlimited Messaging's free Android app turns that phone into an SMS gateway with an API, at a human pace (Android allows 30 SMS per 30 minutes).
All prices below are the providers' published pay-as-you-go rates, read on their own pages on November 9, 2026, without volume discounts or taxes. They change often: each one links to its source.
Related guides: Twilio alternative: is Twilio worth the price?, Android SMS gateway apps compared and unlimited SMS by API.
The table
SMS API prices to France and the US, November 2026
Entry pay-as-you-go price for one outbound SMS segment, as published by each provider. The third column lists what gets added on top.
| One SMS to Franceentry price | One SMS to the USentry price | What comes on topfees and requirements | |
|---|---|---|---|
| Twilio | $0.0798 per segment | $0.0083 + carrier fee ($0.0035 to $0.005) | 10DLC: $4.50 brand + $41.50 vetting + campaign fees; number from $1.15/month |
| Vonage | Rate by country, shown on Vonage's pricing page and in the dashboard | Rate by country + carrier fee ($0.0035 to $0.005) | Registered 10DLC traffic required for US long codes; number rental |
| Plivo | From $0.0664 (most networks $0.07 to $0.0785) | $0.0077 + carrier fee ($0.0035 to $0.005) | 10DLC registration; number from $0.50/month |
| Telnyx | Not shown on the public page (rate card in the portal) | $0.004 + carrier fee ($0.0035 to $0.005) | 10DLC registration; number rental |
| ClickSend | €0.0687 (top-up from €20), down to €0.0475 | $0.0281 (top-up from $20), down to $0.0092 | Carrier fees on top; toll-free number $3.44/month |
| Textbelt | About $0.17 ($5 for 30), down to $0.086 | $0.06 ($3 for 50), down to $0.013 | Prepaid packs; 1 free text a day for tests |
| Brevo | About €0.045 (100 SMS credits from €4.50) | About $0.011 (1 credit) | Prepaid credits; US needs a registered toll-free number |
| Your own phone plan | €0 per SMS on a plan with unlimited SMS (Free Mobile: €2/month) | €0 per SMS on a plan with unlimited texting | Human pace (30 SMS per 30 min on Android), carrier fair use, your own number only |
Prices read on November 9, 2026 on twilio.com (pages dated October 2026), vonage.fr, plivo.com, telnyx.com, clicksend.com, textbelt.com and brevo.com, pay-as-you-go, before taxes and volume discounts. Vonage loads its per-country base rate dynamically, so we did not quote it. Brevo's US figure ($10.90 per 1,000 credits, 1 credit per US SMS) comes from its pay-as-you-go calculator as reported on October 24, 2026. Prices change: follow the sources.
Who is who
The seven SMS APIs and the free route
Twilio
The reference CPaaS: SMS, WhatsApp, voice and verification from one account, billed per segment. Among the dearest to France at $0.0798 per SMS, mid-pack to the US.
TwilioVonage
The communications API formerly known as Nexmo. Per-country rates shown on its pricing page and in the dashboard at purchase, with the same US carrier fees as everyone else.
VonagePlivo
A Twilio-style CPaaS that prices slightly lower: $0.0077 per US SMS and from $0.0664 to France, with cheap US numbers at $0.50 a month.
PlivoTelnyx
A developer-focused CPaaS with the lowest published US rate: $0.004 per message part plus carrier fees, and volume tiers below that.
TelnyxClickSend
A prepaid SMS platform with a web dashboard and an API. The entry price is high ($0.0281 to the US), but falls to $0.0092 for large top-ups.
ClickSendTextbelt
A minimal SMS API sold in prepaid packs, popular with developers for its one-line requests and a free test text per day. Simple, but expensive outside North America.
TextbeltBrevo
An email marketing suite that sells SMS as prepaid credits that never expire. Cheapest to France in this table, and usable on its free plan.
BrevoYour own phone plan + Unlimited Messaging
A free Android app sends SMS from your phone's SIM by API, web app, n8n or MCP. Each SMS counts against your own carrier plan, so a plan with unlimited SMS means no cost per message.
The fine print
What makes an SMS cost more than the advertised price?
Five costs sit outside the per-message rate. Add them before comparing providers.
US carrier surcharges
AT&T, T-Mobile and Verizon charge a pass-through fee on every application-to-person SMS: $0.0035 to $0.005 per message on Twilio, Plivo, Telnyx and Vonage. On Telnyx, that fee is larger than the base rate.
10DLC and toll-free registration
Sending from a US 10-digit number requires registering your brand and campaign with The Campaign Registry: $4.50 plus $41.50 standard vetting at Twilio, then a monthly campaign fee. Brevo requires a registered toll-free number for US recipients.
Segments, not messages
One SMS segment holds 160 GSM-7 characters. One emoji or curly quote switches the message to Unicode and cuts the segment to 70 characters, so a 150-character text can bill as three segments.
Sender IDs in France
To send under a brand name instead of a number in France, Twilio asks for a signed authorization to register the alphanumeric sender ID, and marketing SMS must include a STOP opt-out. Unregistered sender IDs risk being filtered.
Numbers and minimum top-ups
A US long code costs $0.50 to $1.15 a month, a toll-free number $2.15 to $3.44, a dedicated short code $500 to $1,000 a month. Prepaid platforms also set a minimum top-up, from $20 at ClickSend.
The free route
Can you send SMS by API from your own phone plan?
Yes: an Android app can send SMS from your phone's SIM on request from your code. You pay your carrier plan, not the API, in exchange for a human sending pace.
| Paid SMS APITwilio, Plivo, Telnyx, ClickSend... | Your own phone + Unlimited Messagingfree Android app | |
|---|---|---|
| Cost per SMS | $0.004 to $0.17, plus fees | €0 with a plan that includes unlimited SMS |
| Registration | 10DLC, toll-free or sender ID depending on the country | None on our side: your line, your carrier's terms |
| Sender | Rented number, short code or brand name | Your real mobile number, replies come back to you |
| Throughput | Carrier speed, thousands per minute | 30 SMS per 30 minutes (Android's limit) |
| Coverage | Any country, one account | Where your SIM works; international SMS at your carrier's rates |
| Reliability | Provider infrastructure with SLAs | Depends on the phone being on, charged and connected |
| Other channels | Usually SMS only, or WhatsApp and email billed separately | The same request can also go by WhatsApp or email |
Free Mobile plan at €2 a month with unlimited SMS/MMS in mainland France, from mobile.free.fr, read on November 9, 2026. Carrier plans reserve unlimited SMS for normal use: check your contract before sending business messages from a personal line.
Fair play
When is a paid SMS API worth it?
Sending from your own SIM is the cheapest route, not the right one for every job.
Volume and speed
Android lets an app send 30 SMS every 30 minutes. A campaign to 10,000 people or a burst of login codes belongs on a provider built for throughput.
Messages to strangers
Cold or bulk sends from a personal line break most carrier terms and get numbers blocked. Registered business routes exist for that.
A brand name as sender
Alphanumeric sender IDs, short codes and verified toll-free numbers are only available through an SMS provider.
Coverage and uptime guarantees
A provider sends to almost every country from one account, with an SLA. A phone needs to stay on, charged and in range.
FAQ
Questions about cheap SMS APIs
Sources
Sources & references
To check the information in this article for yourself:
- SMS pricing in the United States ($0.0083 per segment, carrier fees, numbers; October 2026)Twilio
- SMS pricing in France ($0.0798 per segment; October 2026)Twilio
- A2P 10DLC Brand Registration ($4.50 brand fee, $41.50 standard vetting)Twilio Docs
- France SMS guidelines (alphanumeric sender ID registration)Twilio
- SMS API pricing (US carrier fees, registered 10DLC traffic)Vonage
- SMS pricing for the United States ($0.0077, carrier surcharges, numbers)Plivo
- SMS pricing for France (from $0.0664)Plivo
- SMS API pricing ($0.004 per message part, carrier fees)Telnyx
- SMS pricing, United States (from $0.0281, toll-free number)ClickSend
- SMS pricing, France (from €0.0687)ClickSend
- Purchase SMS credits (packs by region)Textbelt
- Bulk SMS sender (100 SMS credits in France from €4.5, US toll-free registration)Brevo
- Brevo pricing: SMS credits per country read on Brevo's calculator (October 24, 2026)Kanal
- SMS and WhatsApp cost calculator (160 / 70 characters per segment)Brevo
- Forfait 2€ (unlimited SMS/MMS in mainland France)Free Mobile
- SmsUsageMonitor (30 SMS in 30 minutes threshold)Android Open Source Project
Written by
Ilian · Senior Software Engineer
A senior software engineer, he founds and runs several tech companies. He builds products around messaging APIs, automation and AI integration, and shares here what he learns while building.
Your plan already pays for your SMS.
Install the free Android app, sign in, and send SMS from your own number by API, web app, n8n or an AI assistant, with no cost per message.