Both Twilio and Amazon SNS send US SMS, but they sit at opposite ends of the spectrum: SNS is cheap infrastructure, Twilio is a full messaging platform. Here is how they compare on price and fit. Figures are a June 2026 snapshot.
Estimate — verify with each vendor. SMS pricing and carrier fees change; confirm on the Twilio and Amazon SNS pricing pages.
The answer first
| Twilio | Amazon SNS | |
|---|---|---|
| Base US SMS rate | ~$0.0079 | ~$0.00645 |
| Carrier pass-through fees | Yes (on top) | Yes (on top) |
| Free tier | Trial credit | First 100 US SMS/mo free |
| Number rental | ~$1.15/month | Not required for basic sends |
| Product depth | Full platform | Notifications only |
On price, Amazon SNS wins. On capability, Twilio wins. See the full SMS API comparison and the detailed Twilio vs SNS matchup.
The carrier-fee trap
The single biggest mistake in SMS budgeting is reading the base rate as the all-in cost. In the US, carriers add pass-through fees (around $0.003 per message) on top of whatever your provider charges, and A2P 10DLC registration is mandatory for application messaging. So Twilio’s ~$0.0079 is really closer to $0.011–$0.013 delivered, and SNS rises similarly. Both providers pass these through; neither absorbs them.
When each one wins
- Choose SNS if you send one-way notifications and alerts from an AWS-native stack and want the lowest base rate. The free first 100 US SMS/month is a nice touch for low volume.
- Choose Twilio if you need a messaging product: OTP/Verify, WhatsApp and RCS, Studio flows, deliverability tooling and analytics. You pay more per message for a lot more capability.
If raw price is the priority, also look at Plivo (~$0.0050 base), the cheapest product-level rate in our SMS comparison.
Sources and accuracy
Rates are snapshots of the Twilio and Amazon SNS public pricing pages captured in June 2026, excluding carrier fees. Estimates only — verify before relying on them. See our methodology.