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Bandwidth Messaging API vs MSG91

Bandwidth Messaging API and MSG91 are both SMS APIs, compared here on pricing, compliance, capabilities, and developer experience from structured, cited data - not reviews or paid placement. Bandwidth Messaging API starts lower at $0.004 per message vs $0.0065 for MSG91. MSG91 supports self-serve signup; the other routes through a sales conversation. On compliance, Bandwidth Messaging API additionally documents HIPAA.

Comparedby a transparent data-readiness score computed from each API's published, sourced fields. No reviews, no paid placement. How we rank.

Data last verified 2026-06-10, with every field cited on each profile.

Head-to-head, from published, cited fields (auto-generated; no paid placement)
FieldBandwidth Messaging APIMSG91
Starting price$0.004 message$0.0065 1 SMS
Pricing modelHybridUsage
Free tier✗✗
Self-serve signup✗✓
SOC 2Type IIType II
HIPAA✓·
GDPR✓✓
Webhooks✓✓
Sandbox✗✗
Documented actions718

Full data and citations: Bandwidth Messaging API · MSG91. See more SMS APIs.