Twilio Alternatives for Indie Developers (SMS and OTP Prices)
Twilio charges $0.0083 per US SMS segment, and Twilio Verify adds $0.05 per successful verification on top. Telnyx sends US local SMS from $0.004 a part, Plivo Verify charges no verification fee, and AWS lists US 10DLC SMS at $0.00774 plus a $0.00421 carrier fee. For 10,000 US OTPs a month, that is the difference between roughly $600 and roughly $120.
Key takeaways
- Twilio's US SMS rate is $0.0083 per segment plus carrier fees, and Twilio Verify costs $0.05 per successful verification plus the SMS fee.
- Telnyx lists US local SMS at $0.004 per message part plus carrier fees, and Telnyx Verify at $0.03 per successful verification plus SMS pricing.
- Plivo Verify and Bird charge no separate verification fee: you pay only for the messages, from $0.0077 per US SMS on Plivo.
- US A2P 10DLC registration has its own costs. AWS, for example, lists a $4.50 one-time company registration and $10 a month per regular campaign ($2 for low-volume).
- In our worked example, 10,000 US OTPs a month cost about $628 on Twilio Verify and about $120 to $125 on Plivo Verify or AWS End User Messaging.
On this page 23
- TL;DR
- Why indie developers look for Twilio alternatives
- Twilio alternatives compared
- The providers in a little more detail
- Telnyx
- Plivo
- AWS End User Messaging SMS
- Sinch and Bird
- Firebase Phone Auth and WhatsApp
- US 10DLC, toll-free and carrier fees
- Worked example: 10,000 US OTPs a month
- SMS pumping: the bill that actually hurts
- Do you even need SMS?
- Pick by situation
- Migration tips
- Frequently asked questions
- What is the cheapest Twilio alternative for SMS OTP in the US?
- Do I still need 10DLC registration if I leave Twilio?
- Is Twilio Verify worth $0.05 per verification?
- What is SMS pumping and how do I stop it?
- Do I even need SMS for login codes?
- Ship it, then launch it
- Sources
Short answer: If you only need cheap US SMS, Telnyx ($0.004 per local message part, with every carrier fee published) and Bird ($0.0035 per segment plus carrier fees) have the lowest base rates we found, and AWS End User Messaging is the simplest flat price if you already use AWS. If you want a hosted OTP product without Twilio's $0.05 verification fee, Plivo Verify and Bird charge only for the messages. Stay on Twilio if its trial, docs and Fraud Guard save you more time than the fee costs.
Every price below comes from each provider's own pricing page or docs, checked on 10 Nov 2026. The opinions in between are ours and are marked as such.
TL;DR#
- Twilio: $0.0083 per US SMS segment; Verify is "$0.05 per successful verification plus standard channel fees" (Twilio Verify pricing).
- Telnyx: "$0.004 per message part" for US local SMS; Verify adds $0.03 per successful verification (Telnyx messaging).
- Plivo: $0.0077 per US SMS; Verify has a "$0 verification fee" (Plivo Verify).
- AWS: $0.00774 per US 10DLC SMS plus a $0.00421 carrier fee.
- Everywhere: carrier fees, US 10DLC registration and SMS pumping risk still apply.
Disclosure: ZeroRaised publishes this guide and is a launch site for bootstrapped products. ZeroRaised has no commercial relationship with any provider named here and earns nothing if you sign up. Facts come from the linked sources as checked on 10 Nov 2026.
Why indie developers look for Twilio alternatives#
Twilio is the default for a reason: good docs, a free trial with no card, and a hosted OTP product. The trial includes "100 SMS messages" among other free units, expires after 30 days, and only sends to verified numbers, "up to 5 per account" (Twilio free trial docs).
The problem shows up when you go live. Twilio Verify's $0.05 per successful verification sits on top of the $0.0083 SMS fee, about six times the cost of the message. At 10,000 login codes a month, the fee alone is $500.
Our read: most indie developers need a cheaper SMS pipe, a hosted OTP product without a per-verification fee, or no SMS at all. We cover all three.
Twilio alternatives compared#
US prices for outbound SMS from a 10DLC or local number, per message or segment, before carrier fees unless stated.
| Provider | US SMS (local/10DLC) | Hosted OTP product and fee | Free trial or credit | Best for |
|---|---|---|---|---|
| Twilio | $0.0083 + carrier fees | Verify: $0.05 per successful verification + $0.0083 per SMS | Trial, no card, 100 SMS, 30 days | Fastest start, best docs |
| Telnyx | $0.004 per part + carrier at cost | Verify: $0.03 per successful verification + SMS pricing | Not shown; "A new account starts with no balance" | Cheap SMS with carrier fees published |
| Plivo | $0.0077 + carrier surcharge | Verify: $0 verification fee, pay for messages only | "Trial credits", amount not shown | Hosted OTP without a verify fee |
| AWS End User Messaging | $0.00774 + $0.00421 carrier fee | None; generate codes yourself | Not shown | Teams already on AWS |
| Sinch | $0.0078 + carrier fees | Verification: contact sales | "Free trial", amount not shown | Large-carrier option with public SMS prices |
| Bird | $0.0035 per segment + carrier fees | "No separate verification fee" | Not shown | Lowest listed base rate, verify included |
Sources: Twilio SMS, Twilio Verify, Twilio trial, Telnyx messaging, Telnyx Verify, Telnyx sign-up, Plivo US SMS, Plivo Verify, AWS price sheet, Sinch SMS, Sinch Verification, Bird pricing, Bird SMS pricing.
We left Vonage out because its pricing pages refused our requests today, and we do not quote prices we cannot see.
The providers in a little more detail#
Telnyx#
Telnyx's pitch is on the page: "$0.004 a part. Then the carrier, at cost." Toll-free is $0.0055 per part. Its US local carrier fees are listed separately: AT&T $0.0035, T-Mobile $0.0045, Verizon $0.0045 and U.S. Cellular $0.005 per message part (Telnyx messaging).
Telnyx Verify headlines "From $0.05 a verification", while its rate table lists "$0.03 per successful verification + SMS API pricing" (Telnyx Verify). We use the line items below; confirm with Telnyx before budgeting.
Our read: the best pick if you will check codes in your own backend and just want a cheap pipe.
Plivo#
Plivo charges $0.0077 per outbound US long code SMS and $0.0079 for toll-free, with carrier surcharges from $0.0035 (AT&T) to $0.0050 (Verizon). Number rental is $0.50 a month for a long code and $1.00 for toll-free (Plivo US SMS).
The interesting part is Plivo Verify: "Enjoy Verification & Fraud Shield for free. Only messaging (SMS/ WhatsApp) or voice costs apply." It also says "No charges for fraudulent or failed verification attempts" (Plivo Verify).
Our read: the closest drop-in for Twilio Verify if you want hosted OTP logic without the per-verification fee.
AWS End User Messaging SMS#
AWS publishes one flat US rate across networks: $0.00774 per 10DLC, long code or toll-free message, plus a $0.00421 carrier fee (AWS price sheet). A toll-free number has "a monthly lease price of $2" (AWS pricing).
Our read: predictable and boring in a good way, if your app already lives on AWS. There is no hosted verify product in this price, so you store and check codes yourself.
Sinch and Bird#
Sinch lists US 10DLC and toll-free outbound at $0.0078, "Carrier fees apply", with a 10DLC number at $1.00 a month (Sinch SMS). Its verification product has no public price.
Bird (formerly MessageBird) lists US long code and toll-free SMS at $0.0035 per segment, with carrier fees "on top of the rates shown" (Bird SMS pricing). Its pricing page says "Verification is included. Pay for the channel messages you send. No separate verification fee" (Bird pricing).
Firebase Phone Auth and WhatsApp#
Firebase Phone Auth is not on the free Spark plan; on Blaze it is "Billed per SMS sent" (Firebase pricing). The linked Identity Platform rate page would not load for us today, so we quote no US rate. New projects start with an SMS region policy where "the default policy allows no regions" (Firebase phone auth docs), a good anti-fraud default.
For WhatsApp authentication templates, Meta "charges on a per-message basis" (WhatsApp pricing); the US rate sits in a rate card we did not verify.
US 10DLC, toll-free and carrier fees#
Switching providers does not switch off US carrier rules. To send application-to-person SMS from a 10-digit number, you register a brand (your business) and a campaign (what you send) through A2P 10DLC. Twilio says campaign types "have varying monthly fees associated" (Twilio A2P 10DLC), but its fee article would not render for us today, so here are two other providers' published fees:
| 10DLC fee | AWS | Bird |
|---|---|---|
| Brand or company registration | $4.50 one-time | $4.50 per submission |
| Authentication and verification email | $12.50 one-time | Not listed |
| Vetting | $41.50 per vetting request | Campaign vetting $15.00 per submission |
| Campaign | $10/month regular, $2/month low-volume | $10.00 most use cases, $1.50 low volume, billed every 3 months |
| Number | $1/month per 10DLC number | $0.50/month per US local number |
Sources: AWS End User Messaging pricing, Bird SMS pricing, Bird pricing.
Toll-free is the alternative path. Instead of 10DLC, you can send from a toll-free number once it passes toll-free verification. Twilio is explicit: its toll-free numbers "can't send SMS messages to the United States and Canada until you've completed toll-free verification" (Twilio toll-free verification), and it says verification "is free to complete" (Twilio trial docs). Our read: for a solo founder sending only OTPs, toll-free is often the less painful route. Check each provider's current requirements before choosing.
Carrier fees are the hidden line. Every provider above passes through per-message carrier fees, often half or more of the base SMS price. Twilio also charges a "failed message processing fee of $0.001 per message" for messages that end in a Failed status (Twilio SMS pricing).
Worked example: 10,000 US OTPs a month#
This is our illustration, not a quote. Assumptions: 10,000 OTP texts a month, each one SMS segment, every verification succeeds, and every message goes to T-Mobile so we can use the same published carrier fee for registered 10DLC traffic ($0.0045 at Twilio, Telnyx and Plivo; unregistered traffic costs more at Twilio). AWS uses its flat $0.00421 carrier fee. Bird is left out because we did not verify its carrier fee page. 10DLC and number fees are excluded.
| Setup | Maths | Monthly total |
|---|---|---|
| Twilio Verify | 10,000 x ($0.05 + $0.0083 + $0.0045) | about $628 |
| Telnyx Verify | 10,000 x ($0.03 + $0.004 + $0.0045) | about $385 |
| Plivo Verify | 10,000 x ($0 + $0.0077 + $0.0045) | about $122 |
| AWS End User Messaging (own codes) | 10,000 x ($0.00774 + $0.00421) | about $120 |
| Twilio Programmable Messaging (own codes) | 10,000 x ($0.0083 + $0.0045) | about $128 |
| Telnyx Messaging (own codes) | 10,000 x ($0.004 + $0.0045) | about $85 |
The lesson: the verification fee, not the SMS rate, makes hosted OTP expensive. Roll your own codes on Twilio and the bill drops from about $628 to about $128. Without verify fees, most providers land within a few dollars of each other.
Our read: use a verify product with no per-verification fee, or generate six-digit codes yourself, hash them, expire them after a few minutes and cap attempts. That is an afternoon of work.
SMS pumping: the bill that actually hurts#
Twilio defines it plainly: "SMS pumping fraud happens when fraudsters take advantage of a phone number input field to receive a one-time passcode, an app download link, or anything else via SMS." Its advice: "Review your Verify Geographic Permissions and disable all countries that you do not plan to send messages to," and enable Verify Fraud Guard (Twilio SMS pumping).
Our checklist, whichever provider you use:
- Allow only the countries you actually serve. Firebase's empty default region policy is the right starting point.
- Rate-limit OTP sends per phone number, per IP and per account.
- Put a CAPTCHA or proof-of-work before the "send code" button, not after.
- Set a billing alert so a bad night costs tens of dollars, not thousands.
If fake signups are your real problem, our guide on how to prevent free trial abuse covers where phone verification fits next to the other defences.
Do you even need SMS?#
Often not. SMS OTP costs money per login, needs carrier paperwork and invites pumping fraud. Cheaper options:
- Email one-time codes or magic links. Close to free at indie scale through a transactional email API, and most auth libraries support them out of the box.
- Passkeys. No code to send at all. See passkeys vs passwords for SaaS for the trade-offs.
- Authenticator apps (TOTP) for a second factor, with no per-use cost.
Our read: keep SMS for when a phone number is genuinely the identity, or as an optional second factor. For plain "log me in", email and passkeys win on cost.
Pick by situation#
Our editorial picks, based on the prices above:
| Situation | Our pick |
|---|---|
| Prototype, under a few hundred codes a month | Twilio (trial, docs, Verify) |
| Hosted OTP without a per-verification fee | Plivo Verify or Bird |
| Cheap US SMS pipe, you write the OTP logic | Telnyx |
| Already all-in on AWS | AWS End User Messaging |
| Already on Firebase Auth | Firebase Phone Auth on Blaze, with a strict region policy |
| Login codes for a SaaS | Email OTP or passkeys, SMS optional |
Migration tips#
- Abstract the sender. Put "send OTP" and "check OTP" behind one function so the provider becomes a config change.
- Own your codes. Leaving a hosted verify product means storing hashed codes, expiry and attempt counts yourself.
- Register 10DLC or toll-free with the new provider before cutting over. You cannot send US traffic without it.
- Use a new number. For OTPs users do not reply, so porting is rarely worth it.
- Split traffic for a week and compare delivery before switching fully.
Frequently asked questions#
What is the cheapest Twilio alternative for SMS OTP in the US?#
On list prices checked on 10 Nov 2026, Plivo Verify and AWS End User Messaging came out cheapest in our 10,000-OTP example, at about $122 and $120 a month before 10DLC fees, because neither adds a per-verification fee. Telnyx's plain SMS was cheaper still at $0.004 per local message part if you generate codes yourself, but its Verify product adds $0.03 per successful verification.
Do I still need 10DLC registration if I leave Twilio?#
Yes. A2P 10DLC is a US carrier requirement for application-to-person SMS from ordinary 10-digit numbers, so every provider makes you register a brand and a campaign. Only the fees and paperwork differ. Toll-free numbers use a separate toll-free verification process instead; Twilio says toll-free verification is free to complete.
Is Twilio Verify worth $0.05 per verification?#
It can be if your volume is small and you want code generation, checking and Fraud Guard handled for you. At 10,000 verifications a month the fee alone is $500, so at that point it is worth comparing Plivo Verify or Bird, which do not charge a separate verification fee, or generating codes yourself and sending plain SMS.
What is SMS pumping and how do I stop it?#
Twilio defines SMS pumping fraud as fraudsters abusing a phone number input field to receive a one-time passcode or other SMS. Because you pay per message, it can run up a large bill. Twilio advises disabling every country you do not plan to send to in your geographic permissions. Our advice: also rate-limit by IP and phone number, and add a CAPTCHA before the send step.
Do I even need SMS for login codes?#
Often not. Email one-time codes, magic links, passkeys and authenticator apps cost little or nothing per login and avoid 10DLC registration and SMS pumping entirely. Keep SMS for cases where a phone number is genuinely the identity, such as a marketplace that needs a verified contact number, or as an optional second factor.
Ship it, then launch it#
Once your login flow is sorted, run through our product launch checklist for bootstrapped makers and submit your product to ZeroRaised for free. For more guides on building without investors, join the ZeroRaised newsletter.
Sources#
- Twilio US SMS pricing, last checked 10 Nov 2026
- Twilio Verify pricing, last checked 10 Nov 2026
- Twilio free trial docs, last checked 10 Nov 2026
- Twilio A2P 10DLC docs, last checked 10 Nov 2026
- Twilio toll-free verification docs, last checked 10 Nov 2026
- Twilio: what is SMS pumping fraud, last checked 10 Nov 2026
- Telnyx messaging pricing, last checked 10 Nov 2026
- Telnyx Verify pricing, last checked 10 Nov 2026
- Telnyx sign-up, last checked 10 Nov 2026
- Plivo US SMS pricing, last checked 10 Nov 2026
- Plivo Verify pricing, last checked 10 Nov 2026
- AWS End User Messaging pricing, last checked 10 Nov 2026
- AWS End User Messaging SMS price sheet (CSV), last checked 10 Nov 2026
- Sinch SMS pricing, last checked 10 Nov 2026
- Sinch Verification pricing, last checked 10 Nov 2026
- Bird pricing, last checked 10 Nov 2026
- Bird SMS pricing, last checked 10 Nov 2026
- Firebase pricing, last checked 10 Nov 2026
- Firebase phone auth docs, last checked 10 Nov 2026
- WhatsApp Business Platform pricing, last checked 10 Nov 2026
Frequently asked questions
What is the cheapest Twilio alternative for SMS OTP in the US?
On list prices checked on 10 Nov 2026, Plivo Verify and AWS End User Messaging came out cheapest in our 10,000-OTP example, at about $122 and $120 a month before 10DLC fees, because neither adds a per-verification fee. Telnyx's plain SMS was cheaper still at $0.004 per local message part if you generate codes yourself, but its Verify product adds $0.03 per successful verification.
Do I still need 10DLC registration if I leave Twilio?
Yes. A2P 10DLC is a US carrier requirement for application-to-person SMS from ordinary 10-digit numbers, so every provider makes you register a brand and a campaign. Only the fees and paperwork differ. Toll-free numbers use a separate toll-free verification process instead; Twilio says toll-free verification is free to complete.
Is Twilio Verify worth $0.05 per verification?
It can be if your volume is small and you want code generation, checking and Fraud Guard handled for you. At 10,000 verifications a month the fee alone is $500, so at that point it is worth comparing Plivo Verify or Bird, which do not charge a separate verification fee, or generating codes yourself and sending plain SMS.
What is SMS pumping and how do I stop it?
Twilio defines SMS pumping fraud as fraudsters abusing a phone number input field to receive a one-time passcode or other SMS. Because you pay per message, it can run up a large bill. Twilio advises disabling every country you do not plan to send to in your geographic permissions. Our advice: also rate-limit by IP and phone number, and add a CAPTCHA before the send step.
Do I even need SMS for login codes?
Often not. Email one-time codes, magic links, passkeys and authenticator apps cost little or nothing per login and avoid 10DLC registration and SMS pumping entirely. Keep SMS for cases where a phone number is genuinely the identity, such as a marketplace that needs a verified contact number, or as an optional second factor.