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Paid plans start at $99/mo. There's also a free plan.
Sinch Functions starts free, with charges for compute time; SMS and Voice API usage is billed per message or minute. The vendor does not publish those rates or API usage limits, so a free start does not tell you what production traffic will cost. For teams using Sinch Engage, monthly plans start at $99 for 3,000 SMS and one user. Those application plans are separate from API usage pricing.
01Every plan, line by line
| Plan | Billed annually | Billed monthly | Built for |
|---|---|---|---|
| Pay-as-you-go (Functions / APIs) | — | $0 | Developers building on Sinch APIs |
| Custom Solution / Enterprise | — | Quote | Businesses needing tailored solutions |
| Basics | — | $99 | Small teams starting with SMS |
| Conversations | — | $249 | Teams managing shared customer conversations |
| Pro | — | $799 | Teams needing SSO and subaccounts |
| Pro Plus | — | $1,799 | Teams needing onboarding and more volume |
| Advanced | — | $2,399 | Teams with higher SMS volume |
| Custom | — | Quote | Businesses sending over 150,000 messages monthly |
Add-ons and overages
- Functions compute time and SMS/Voice usage charges; rates not published
- Sinch Engage add-ons and overage costs not published
02What the plan grid doesn't tell you
API usage rates
SMS and Voice are billed per message or minute, and Functions charges for compute time. Ask Sinch for the rates and expected bill at your forecast volume.
Unpublished usage limits
API usage limits are not published. Confirm applicable limits and any changes to pricing or service as traffic scales.
Engage overages
Engage overage costs and add-ons are not published. Confirm the charges if your monthly SMS volume exceeds the plan allowance.
Annual billing
Sinch Engage lists a 16% annual-billing discount, but annual dollar amounts are not listed. Request a quote to compare total costs.
03Which plan should you buy?
| If you are… | Get | Why |
|---|---|---|
| Developer evaluating Functions | Pay-as-you-go (Functions / APIs) | Functions starts free; compute time and SMS or Voice usage are billed. Get rates and limits from Sinch before production. |
| Small team using Engage | Basics | $99 per month includes one user and 3,000 SMS per month. |
| Business above 150,000 messages | Custom | Sinch lists custom pricing for businesses sending more than 150,000 messages monthly. |
04Is Sinch worth the money?
Sinch can be worth paying for when a product needs several communication channels or a team wants APIs alongside ready-made applications. Functions gives developers a free starting point, but compute and message usage become billable, and the vendor does not publish API rates or limits. Sinch Engage has clear monthly prices through Advanced, with Custom pricing above 150,000 messages. Before choosing, get an API cost estimate and confirm Engage overages, add-ons and annual billing totals in writing.
Sinch pricing FAQ
How much does Sinch cost for API developers?
Functions starts free and charges for compute time. SMS and Voice are billed per message or minute. The vendor does not publish those rates or API usage limits, so contact Sinch with your expected traffic and regions for a production cost estimate.
What is the cheapest Sinch Engage plan?
Basics is the lowest-priced monthly Engage plan listed, at $99 per month. It includes one user, 3,000 SMS per month, three automation workflows and a free dedicated number. Confirm applicable overages and any add-on charges with Sinch.
Does Sinch offer annual billing?
The Sinch Engage pricing information lists a 16% discount for annual billing, but does not give annual dollar amounts. Ask Sinch for a quote that shows the annual total, included SMS and charges for any usage above the plan allowance.
What does Sinch charge above 150,000 messages?
Sinch lists Custom pricing for businesses sending more than 150,000 messages monthly. The price and user limits are not published, so contact sales with your expected volume and ask for the full pricing and overage terms.