Vonage Messages API (WhatsApp) vs WATI

Vonage Messages API (WhatsApp) and WATI are both WhatsApp Business APIs, compared here on pricing, compliance, capabilities, and developer experience from structured, cited data - not reviews or paid placement. On compliance, Vonage Messages API (WhatsApp) additionally documents HIPAA. For coding-agent use, WATI scores higher on agent-friendliness (65 vs 40).

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 2026-06-16, with every field cited on each profile.

Head-to-head, from published, cited fields (auto-generated; no paid placement)
Field	Vonage Messages API (WhatsApp)	WATI
Starting price	$0.0002 per message	$59 month + per-message markup
Pricing model	Usage	Hybrid
Free tier	✗	✗
Self-serve signup	✓	✓
SOC 2	?	·
HIPAA	✓	·
GDPR	✓	✓
Webhooks	✓	✓
Sandbox	✓	✗
Documented actions	21	21

Full data and citations: Vonage Messages API (WhatsApp) · WATI. See more WhatsApp Business APIs.