Keywords Everywhere vs Serpstat API

Keywords Everywhere and Serpstat API are both SEO & Keyword Data APIs, compared here on pricing, compliance, capabilities, and developer experience from structured, cited data - not reviews or paid placement. Keywords Everywhere offers a free tier while Serpstat API does not, so Keywords Everywhere is easier to trial before committing. For coding-agent use, Serpstat API scores higher on agent-friendliness (55 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 2026-06-06, with every field cited on each profile.

Head-to-head, from published, cited fields (auto-generated; no paid placement)
Field	Keywords Everywhere	Serpstat API
Starting price	$84 100,000 credits/year	$100 month
Pricing model	Hybrid	Subscription
Free tier	✓	✗
Self-serve signup	✓	✓
SOC 2	·	·
HIPAA	·	·
GDPR	✓	✓
Webhooks	·	·
Sandbox	✗	✗
Documented actions	12	51

Full data and citations: Keywords Everywhere · Serpstat API. See more SEO & Keyword Data APIs.