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Marketing

Best SEO APIs in 2026

Ahrefs leads this list of 27 (9.2/10, free plan). SEO PowerSuite is next (8.6/10, free plan), and Semrush is the next highest-placed option with a free plan (8.5/10). This list helps you choose an SEO API for rankings, backlink, keyword, domain or historical data. It is for people comparing tools before connecting one to their software or workflow.

  1. 01 Ahrefs

    Ahrefs suits people doing keyword, competitor, backlink and site-audit work who need web tools or API access.

    From $29/mo Free plan Web · API
    9.2 Visit Specs
  2. 02 SEO PowerSuite

    It suits people who need keyword research, rank tracking, site auditing, backlink analysis, or competitor research.

    From $29.08/mo Free plan Windows · macOS · Linux · API
    8.6 Visit Specs
  3. 03 Semrush
    From $10/mo Free plan API
    8.5 Visit Specs
  4. 04 Keyword Tool

    Keyword Tool suits solo marketers, businesses, in-house teams, agencies, SEO and content professionals, and PPC managers looking for keyword suggestions or competitor research.

    From $68/mo Free plan Web · API
    8.4 Visit Specs
  5. 05 Google Search Console

    Google identifies business owners, SEO specialists or marketers, site administrators, and web developers as users.

    Free plan Web · API
    8.3 Visit Specs
  6. 06 GeoRanker
    From $99/mo Free trial Web · API
    8.2 Visit Specs
  7. 07 LinkResearchTools

    LinkResearchTools suits SEO practitioners focused on backlink audits, link discovery, monitoring, and competitor research.

    From $17/mo Free trial Web · Browser extension
    8.2 Visit Specs
  8. 08 DataForSEO Labs API
    Free plan Web · API
    8.0 Visit Specs
  9. 09 DataForSEO SERP API
    Free plan Web · API
    8.0 Visit Specs
  10. 10 Keyword Discovery

    Keyword Discovery suits people doing SEO, PPC, niche marketing, or domain parking research.

    From $41.66/mo Free plan Web · API
    8.0 Visit Specs
  11. 11 BrightEdge
    Web · API
    7.9 Visit Specs
  12. 12 Semust API

    Semust says it serves people seeking to grow income through organic search and supports content creators.

    From $19/mo Free plan Web · API · Browser extension
    7.8 Visit Specs
  13. 13 backlinks.sh
    Web · API
    7.7 Visit Specs
  14. 14 Ranked AI API
    From $99/mo Free trial Web · API
    7.7 Visit Specs
  15. 15 SISTRIX
    From €119/mo Free trial Web · API
    7.7 Visit Specs
  16. 16 SpyFu

    SpyFu suits SEO, paid-search and agency users who need keyword, competitor, backlink and ranking data through web or API access.

    From $29/mo Web · API
    7.7 Visit Specs
  17. 17 Datacircle
    Free plan Web
    7.6 Visit Specs
  18. 18 SEOmonitor
    From €25/mo Free trial Web · API
    7.6 Visit Specs
  19. 19 Keyword.com
    From $3/mo API
    7.3 Visit Specs
  20. 20 seofetch
    Web · API
    7.2 Visit Specs
  21. 21 Newinterval
    From $20/mo API
    7.0 Visit Specs
  22. 22 SEO API
    API
    6.8 Visit Specs
  23. 23 Serpstat
    From $50/mo API
    6.8 Visit Specs
  24. 24 SE Ranking
    From $129/mo API
    6.7 Visit Specs
  25. 25 Majestic
    API
    6.6 Visit Specs
How this list is ordered. Specifiction scores each tool on how fully its maker documents it, whether its prices are published, where the research puts it, the platforms it runs on and whether it can be tried for free (how we rank). Makers can also buy a numbered place (how Specifiction is paid for).

Before choosing, compare the data types, rate limit, API format, supported platform and paid entry price. Check whether a free plan or trial fits your evaluation needs.

Compare Ahrefs and SEO PowerSuite Get a place on this list

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