minimothMiniMoth vs Twilio: OTP Pricing for Indian Developers
21 August 2026
Twilio is the default reach for OTP delivery — it’s the first result for “SMS API” and the most-integrated messaging platform in most stacks. But Twilio prices SMS and verification globally, and India’s routing rules (and Twilio’s own carrier fees) push the per-OTP cost well past what a India-only provider charges.
The actual numbers
| Per OTP (India) | Free tier | |
|---|---|---|
| MiniMoth | ₹0.35 | ₹20 for 3 months (~57 OTPs) |
| Twilio Verify (SMS channel) | ≈₹11 | None |
| Twilio Programmable Messaging (SMS only, self-built OTP logic) | ≈₹7 | None |
Twilio’s own pricing page lists outbound SMS to India at $0.0832/message. If you use Verify — Twilio’s packaged OTP product — that’s on top of the $0.05-per-successful-verification base fee, so $0.1332 total. If you skip Verify and send raw SMS through Programmable Messaging (building your own OTP generation, hashing, and expiry logic), you pay just the $0.0832 message fee. Both convert to well over ₹6 per OTP at current exchange rates ($1 ≈ ₹83.2, per the Federal Reserve’s August 2026 rate).
At 1,000 OTPs a month, that’s roughly ₹350 on MiniMoth versus ≈₹11,000 on Twilio Verify, or ≈₹7,000 if you build OTP logic yourself on top of raw Twilio SMS.
Why the gap exists
Twilio is a global messaging platform — its India rate reflects the same per-message carrier-fee model applied everywhere else, not India-specific infrastructure. Twilio’s own India SMS guidelines are explicit that DLT registration is the customer’s job: “Completion of company and Sender ID registration within the mobile operators’ DLT portal is necessary before submitting a registration request to Twilio.” Twilio doesn’t register your entity or sender ID with TRAI — it only accepts a sender ID after you’ve already done that paperwork yourself. (Twilio does offer an International Gateway route that skips DLT, but it delivers from a random short code rather than your own registered sender, and doesn’t change the per-message cost.)
MiniMoth only does one thing: phone OTP for Indian numbers. It’s TRAI DLT-registered directly, sends OTP via WhatsApp first (which doesn’t require DLT registration at all, since it goes through Meta’s Cloud API) and falls back to SMS automatically if WhatsApp fails. You’re not charged for an OTP that wasn’t delivered on either channel — the charge is reversed automatically to your credits balance if both channels fail, unless the number shows a recent pattern of repeated delivery failures.
What you don’t have to build
Beyond price, the OTP-specific parts of MiniMoth’s API save you from building what Twilio leaves to you:
- OTP generation, hashing, expiry, and attempt-limiting (Twilio Verify includes this; raw Programmable Messaging does not)
- Rate limiting per phone number (send and verify)
- Session management with access + refresh token rotation
- DLT sender registration and carrier approval paperwork
- WhatsApp-first delivery with automatic SMS fallback
If Twilio already handles other parts of your messaging stack (two-way SMS, voice, WhatsApp campaigns) and you only want to swap the OTP piece for Indian numbers, MiniMoth’s REST API is two endpoints — POST /v1/otp/send and POST /v1/otp/verify — so it drops in alongside Twilio rather than requiring you to rip it out.
See the full pricing breakdown or the quickstart to send your first OTP.