SMS API Comparisons

Kaleyra vs StartMessaging for OTP (India 2026)

Kaleyra vs StartMessaging compared for Indian OTP traffic: pricing, DLT model, monthly minimums, developer experience, and a clear recommendation by stage.

3 May 20267 min read

StartMessaging Team

Engineering

Kaleyra is a global CPaaS with India operations spanning SMS, voice, WhatsApp and email. StartMessaging is OTP-focused and DLT-free. Here’s how they compare for an Indian OTP workload.

Overview

  • Kaleyra — broad CPaaS, global reach, enterprise.
  • StartMessaging — OTP-only, India-first, no DLT.

Pricing

  • Kaleyra — contract-driven, often monthly minimums.
  • StartMessaging — Rs 0.25 per OTP, no minimums.

DLT

Kaleyra customer-side; StartMessaging absorbs.

Features

  • Both: idempotency, DLR webhooks, voice OTP fallback.
  • Kaleyra: WhatsApp BSP, voice IVR, email.
  • StartMessaging: hashed-storage, attempt-limit API, India-tuned defaults.

Developer Experience

  • Kaleyra — REST + multiple SDKs, broad docs.
  • StartMessaging — REST + JSON, OpenAPI spec, code samples in 12+ stacks, OTP-specific endpoints.

Who Each Suits

  • Kaleyra — global enterprises wanting one CPaaS vendor.
  • StartMessaging — India-first products of any size.

FAQ

For pure India OTP at any volume, StartMessaging ships faster and usually cheaper.

Ready to Send OTPs?

Integrate StartMessaging in 5 minutes. No DLT registration required.