The Best SEO APIs in 2026
We researched SEO APIs through official websites, including pricing pages, plan tables and product documentation. Rankings reflect each product’s core job, value for money and verified features, so you can compare access to rankings, backlink, keyword and domain data for SEO software, analytics or internal workflows.
Our top picks
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Top ranked
Semust API#1 of 269.4/10Broad SEO data coverage with request-based pricing starting at $0.01.
14-day trial
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Runner-up
SEO API#2 of 269.2/10A broad SEO data API for enterprise workflows, dashboards and white-label platforms.
Pricing on request
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Top-ranked free plan
Ahrefs#3 of 269.1/10A broad SEO platform with API access, audits, research, tracking, and reporting.
Free plan
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
The full ranking 26 tools, best first
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Best forBroad, low-cost SEO data API access
Broad SEO data coverage with request-based pricing starting at $0.01.
- Rankings data
- Backlink data
- Keyword data
9.4/10★★★★★Visit Semust -
Best forEnterprise SEO API deployments
A broad SEO data API for enterprise workflows, dashboards and white-label platforms.
- Rankings data
- Backlink data
- Keyword data
9.2/10★★★★★Visit SEO API -
Best forEstablished teams needing broad SEO coverage
A broad SEO platform with API access, audits, research, tracking, and reporting.
9.1/10★★★★★Visit Ahrefs -
Best forIntegrated SEO and marketing analytics
A broad SEO and marketing analytics suite with API access and a limited free plan.
Free plan · 7-day trial Our Semrush verdict → Visit SemrushFor vendors Sponsor this spot · #4 · $69/mo →9.0/10★★★★☆Visit Semrush -
Best forOne-time-credit SEO API workloads
A credit-based REST API for developers building SEO and AI-visibility tools.
- Rankings data
- Backlink data
- Keyword data
8.8/10★★★★☆Visit seofetch -
Best forAI-search visibility API use cases
A focused API for teams combining traditional SEO data with AI-search visibility.
- Rankings data
- Backlink data
- Keyword data
8.7/10★★★★☆Visit Ranked AI -
Best forDomain, backlink, and keyword metrics
A broad SEO data API with free access and row-based paid plans.
- Rankings data
- Backlink data
- Keyword data
8.6/10★★★★☆Visit Moz API -
Best forHistorical SERP and competitor research
A focused API for historical SERP, rankings, keyword and competitor research.
- Rankings data
- Keyword data
- Domain data
8.5/10★★★★☆Visit DataForSEO -
Best forAffordable full-suite SEO API access
Affordable SEO API access with broad research, audit, rank, backlink, and reporting tools.
8.4/10★★★★☆Visit Serpstat -
Best forCompetitor-focused SEO research
A competitor-focused SEO and PPC research suite with free access, API tools, and tiered limits.
8.3/10★★★★☆Visit SpyFu -
Best forAgencies needing connected SEO workflows
A broad SEO workspace with APIs, automation, and agency-focused reporting.
8.2/10★★★★☆Visit SE Ranking -
Best forDesktop-based SEO suites with API access
A broad desktop SEO suite for teams that need research, tracking, audits, and API access.
8.1/10★★★★☆Visit SEO PowerSuite -
Best forSmall teams needing affordable SEO automation
Affordable SEO automation with rank tracking, audits, research and API access on higher tiers.
8.0/10★★★★☆Visit Newinterval -
Best forEnterprise SEO reporting and integrations
A broad enterprise SEO suite with API access, AI assistance, and ten integrations.
7.9/10★★★★☆Visit BrightEdge -
Best forVisibility-focused SEO teams
A broad SEO analytics suite for teams that need visibility tracking and API access.
7.8/10★★★★☆Visit SISTRIX -
Best forAdvanced rank-tracking API reporting
A strong choice for multi-location rank tracking and API reporting.
- Historical data
7.7/10★★★★☆Visit SEOmonitor -
Best forFree Google search performance data
A free source of Google Search performance, indexing, links, and site issue data.
7.6/10★★★★☆Visit Search Console -
Best forLow-cost keyword and trend data APIs
A pay-as-you-go API for keyword, advertising, and trend data.
- Keyword data
7.4/10★★★★☆Visit DataForSEO -
Best forBacklink data with workflow integrations
A focused backlink API with flexible usage billing and workflow integrations.
- Backlink data
- Domain data
- Historical data
7.3/10★★★★☆Visit DataForSEO -
Best forBacklink-focused API users
A backlink-led SEO API with free access, bulk analysis, rank tracking, and reporting.
7.2/10★★★★☆Visit Majestic -
Best forLong-tail keyword discovery APIs
A broad keyword research API for long-tail discovery, with free access and AI assistant support.
7.1/10★★★★☆Visit Keyword Tool -
Best forKeyword databases and seasonal research
A focused keyword database for regional, competitor, historical, and seasonal research.
7.0/10★★★★☆Visit site -
Best forLow-cost rank and AI visibility tracking
A low-cost SEO API for Google rankings, local visibility, and AI search tracking.
6.9/10★★★☆☆Visit Keyword.com -
Best forLocal and multi-engine rank tracking
A focused rank-tracking platform for local, mobile, image, Maps, and multi-engine SEO data.
- Historical data
6.8/10★★★☆☆Visit GeoRanker -
Best forSimple pay-as-you-go backlink lookup
A focused, pay-as-you-go API for backlink and referring-domain lookups.
- Rankings data
- Backlink data
- Domain data
6.7/10★★★☆☆Visit backlinks.sh -
Best forSpecialist backlink risk auditing
A deep backlink auditing suite for teams focused on link risk and recovery.
6.6/10★★★☆☆Visit site
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | Score |
|---|---|---|---|---|
| 1 | Semust API | No | $0.01/unit usage-based | 9.4 |
| 2 | SEO API | 9.2 | ||
| 3 | Ahrefs | Yes | $29/mo | 9.1 |
| 4 | Semrush | Yes | 9.0 | |
| 5 | seofetch | No | 8.8 | |
| 6 | Ranked AI API | No | $99/site/mo | 8.7 |
| 7 | Moz API | Yes | $20/mo | 8.6 |
| 8 | DataForSEO Labs API | No | 8.5 | |
| 9 | Serpstat | Yes | $50/mo | 8.4 |
| 10 | SpyFu | Yes | $29/mo | 8.3 |
| 11 | SE Ranking | No | $103.20/mo | 8.2 |
| 12 | SEO PowerSuite | Yes | $349/yr | 8.1 |
| 13 | Newinterval | No | $20/mo | 8.0 |
| 14 | BrightEdge | No | 7.9 | |
| 15 | SISTRIX | No | €119/mo | 7.8 |
| 16 | SEOmonitor | No | €25/mo | 7.7 |
| 17 | Google Search Console | Yes | Free | 7.6 |
| 18 | DataForSEO Keywords Data API | No | $0.0012/unit usage-based | 7.4 |
| 19 | DataForSEO Backlinks API | No | $0.02/unit usage-based | 7.3 |
| 20 | Majestic | Yes | 7.2 | |
| 21 | Keyword Tool | Yes | $68/mo | 7.1 |
| 22 | Keyword Discovery | Yes | 7.0 | |
| 23 | Keyword.com | No | $3/mo | 6.9 |
| 24 | GeoRanker | No | $99/mo | 6.8 |
| 25 | backlinks.sh | No | $10/unit usage-based | 6.7 |
| 26 | LinkResearchTools | No | $599/mo | 6.6 |
Head-to-head All 27 comparisons →
- Semust API vs SEO API
- Semust API vs Ahrefs
- Semust API vs Semrush
- Semust API vs seofetch
- Semust API vs Ranked AI API
- Semust API vs Moz API
- Semust API vs DataForSEO Labs API
- SEO API vs Ahrefs
- SEO API vs Semrush
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How we rank SEO APIs
Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update