The short answer
Twilio is billed per sms segment. It has a free tier: $15.50 trial credit, no card. The paid plans we list start at $1.15–$2.15 / month (Phone number rental).
Plans and prices
| Plan | Price | What it covers |
|---|---|---|
| US SMS (long code, base) | $0.0083 / segment | Per outbound or inbound message segment; US carrier pass-through fees apply on top. |
| US Toll-Free SMS | $0.0083 / segment | Default 3 MPS throughput; toll-free number rental $2.15/mo. |
| Phone number rental | $1.15–$2.15 / month | Local long code $1.15/mo; toll-free $2.15/mo. |
| Engagement Suite (link shorten/click track) | $0.015 / outbound msg | First 1,000/month free, then per-message charge. |
| Compliance Toolkit | $0.015 / outbound msg | AI-based SMS compliance review add-on. |
| International SMS | Varies (e.g. UK $0.04, India $0.0029, Brazil $0.075) | Pay-as-you-go per destination; volume and committed-use discounts available. |
How Twilio bills you
The pricing model is per sms segment. The category-defining CPaaS with the deepest docs, widest SDK coverage and largest community, at premium per-message pricing. Best suited to: full-stack cpaas for sms, voice, whatsapp, email.
What to watch for on the bill
- Effective per-message cost runs 40–60% above the headline rate once US carrier pass-through fees are added
- Unpredictable monthly bills at scale from layered A2P 10DLC brand/campaign fees, failed-message charges, and add-ons
The pricing page we read
Source: https://www.twilio.com/en-us/sms/pricing/usa. Prices change, so confirm there before you commit.
Compare Twilio with alternatives
Other sms & messaging apis: Vonage, Telnyx, Plivo, Sinch, AWS End User Messaging (SNS).
Looking at quality rather than price? See the Twilio score on APIbenchmarks. Full entry: Twilio pricing.