SMS and messaging APIs · Comparison
Plivo SMS API vs Sinch SMS API vs Twilio Programmable Messaging
3 products compared side by side: what you pay for with each one first, then the five access facts, entry prices, recorded plan limits and the bottom line of each review. The evidence note under the table says how each product was checked.
Side by side
| Metric | Plivo SMS API | Sinch SMS API | Twilio Programmable Messaging |
|---|---|---|---|
| What you're paying for | Worth the priceFor brands spending $1,000 a month or more, low published US rates and a full fee sheet, with opt-outs and 10DLC registration handled by the platform. | Built-in reachPrepaid SMS priced for 241 countries from one account, with US 10DLC registration in the same dashboard or API and a SOC 2 Type II that names the SMS API. | Compliance includedUS texting with every fee and the compliance paperwork on public pages, plus opt-outs and 10DLC registration handled through the API. |
| Overall score | 4.6 | 7.6Best | 7.2 |
| Free option | Paid only | Free trial | 30-day free trial |
| Card to start | –Not measured | No card needed | No card needed |
| Getting access | Sales call required | Self-serve | Self-serve |
| Starter priceCheapest paid plan | $1,000/mo minimum | $0.0078/message | $0.0083/SMS segment |
| Pricing model | Seat + usage | Usage-based | Usage-based |
| Pricing page | Public prices | Public prices | Public prices |
| US SMS rate (10DLC) | $0.0077 per segment, outbound or inbound (list rate) | $0.0078 per message, outbound or inbound | $0.0083 per segment, outbound or inbound |
| US carrier fees | Per carrier: AT&T $0.0035, T-Mobile $0.0045, Verizon $0.005 (outbound) | Per carrier: AT&T $0.0035, T-Mobile $0.0045, Verizon $0.0050 (outbound; carrier fee article of Oct 1, 2026) | Per carrier: AT&T $0.0035, T-Mobile $0.0045, Verizon $0.005 (outbound) |
| Local number | $0.50/mo | $1.00/mo plus $1.00 setup | $1.15/mo |
| 10DLC registration fees | Brand $4.50, campaign vetting $15, $1.50/mo low-volume campaign (billed quarterly) | Brand $4, campaign review $15 per submission, $10/mo standard or $1.50/mo low-volume mixed (under 10k SMS/mo); optional vetting $41.50 | Passed through: brand $4.50, campaign vetting $15, $1.50/mo low-volume mixed |
| Reference scenario (10,000 US texts/mo) | $1,046.46 with the $1,000 minimum, computed ($123.96 at list rates alone) | $134.00, computed | $130.61, computed |
| Free option | None for SMS; the $10 trial covers voice products | Trial credit, no card ($2 for US accounts per archived help); texting sandbox | 30-day trial: 100 SMS to up to 5 verified numbers, no card |
| Volume discounts | Enterprise plan only, by sales | Not published; contact sales | Mentioned but not published; committed use by sales |
| SOC 2 / ISO 27001 | SOC 2 Type II (FAQ); ISO 27001 not stated | SOC 2 Type II naming the SMS API; group ISO 27001 certificate | SOC 2 Type 2 (all services) and ISO 27001 |
| HIPAA BAA | Offered; listed on the Enterprise plan | Product-level BAAs offered; SMS API not named | Yes, SMS eligible; needs Security or Enterprise Edition |
| Non-US data region | No (the India region has no SMS) | EU (Ireland, Sweden), Australia, Brazil, Canada through the account manager | Ireland (IE1) for SMS; no +1 numbers there |
| Opt-out handling | Automatic STOP/HELP on US and Canadian long code and toll-free | Automatic STOP blocking once consent management is switched on (Conversation API) | Automatic STOP/HELP on long code and toll-free |
| SSO | Enterprise plan, by sales | SAML in Sinch Build; no plan condition stated | SAML 2.0 in Twilio Editions, by sales |
| Bottom line | From its public pages, Plivo lists low US rates and every US fee, with opt-outs and 10DLC registration built in. SMS now needs an Enterprise contract with a $1,000 monthly minimum, and some pages still describe pay-as-you-go. | From its public pages, Sinch offers a prepaid SMS API with per-country prices, SAML SSO, non-US servers and a SOC 2 Type II for SMS. Its US carrier and 10DLC fees sit in help articles that call them "only indications". | From its public pages, Twilio publishes every US fee and a full set of compliance documents for SMS, with opt-outs and 10DLC registration handled by the platform. Our scenario costs more than at Telnyx or AWS, volume tiers are not published, and a few pages disagree on fees. |
Evidence: Plivo SMS API: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run; Sinch SMS API: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run; Twilio Programmable Messaging: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run. Prices in USD as listed, excluding tax. "–" means not recorded.
When to pick each
In the words of each review, with the date its facts were checked.
From our Plivo SMS API review
Checked Oct 15, 2026- Pick Plivo SMS API when
- You will spend $1,000 a month or more and want a lower list rate ($0.0077 against $0.0083 per segment) and $0.50 numbers.
- Pick Twilio Programmable Messaging when
- You want to pay as you go online with no monthly minimum, a free trial, ISO 27001 and a DPA built into the terms.
From our Plivo SMS API review
Checked Oct 15, 2026- Pick Plivo SMS API when
- You want 10DLC and carrier fee tables in dated docs and a price sheet, and a BAA offered on the plan that carries SMS.
- Pick Sinch SMS API when
- You want prepaid pay-as-you-go with no monthly minimum ($134.00 a month for our scenario), EU and other API regions, and a DPA in the terms.
From our Sinch SMS API review
Checked Oct 15, 2026- Pick Sinch SMS API when
- You want SAML SSO with no plan condition stated, a texting sandbox, and prices for 241 countries in one prepaid account.
- Pick Twilio Programmable Messaging when
- You need a HIPAA BAA that names SMS, an audit log, carrier fees on the pricing page itself and a slightly lower scenario figure ($130.61 against $134.00).
From our Twilio Programmable Messaging review
Checked Oct 15, 2026- Pick Twilio Programmable Messaging when
- You want to pay as you go online, without a monthly minimum.
- Pick Plivo SMS API when
- You expect to spend $1,000 a month or more and want an Enterprise contract with slightly lower list rates ($0.0077 per segment).
Entry price
Baseline: each product's cheapest paid plan, per month. Included usage differs, so read the line under each price.
- Plivo SMS APILowest priceLong code number$0.50/moPer number; billed for the full month when removed mid-month
- Toll-free number $1.00/mo
- 10DLC: brand $4.50, campaign vetting $15, $1.50/mo low-volume or $10/mo standard campaign
- Sinch SMS APILocal number (10DLC)$1.00/moPlus $1.00 one-time setup
- 10DLC fees (fee article, updated Sep 17, 2026): brand $4, campaign review $15 per submission, low-volume mixed campaign $1.50/mo (under 10k SMS a month), most other campaigns $10/mo
- Campaign fees billed 3 months up front
- Twilio Programmable MessagingLocal number (10DLC)$1.15/moPer leased long code; bring your own number $0.5/mo
- 10DLC fees passed through at cost: brand $4.50, campaign vetting $15
- Low-volume mixed campaign $1.50/mo; standard campaign $10/mo
Prices as listed on each pricing page, in USD per month, excluding tax. Observed: Plivo SMS API 2026-10-15, Sinch SMS API 2026-10-15, Twilio Programmable Messaging 2026-10-15.
Which one fits
- If you need to start today without a sales call
- Sinch SMS APISelf-serve sign-up, no card needed; the highest score of the 2 self-serve products here (7.6/10).
- If you want to try it without entering a card
- Sinch SMS APIFree trial, no card needed, and the highest score of the 2 that skip the card (7.6/10).
- Lowest starter price
- Plivo SMS API$1,000/mo minimum for the Enterprise (USD 1,000/month minimum commitment) plan.
- Highest overall score
- Sinch SMS API7.6/10 (Good). The review shows the score breakdown and the run behind it.
Picked by fixed rules from the table above, not by hand. How we score
Full reviews
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