SEO APIs, compared on what they actually cost
49 providers, researched from their own pricing and documentation pages rather than their marketing. What each request costs, which datasets you get, what the rate limits are, and where the licence stops you reselling the output.
- 49
- providers reviewed
- 26
- usable free
- 11
- with no monthly floor
- 7
- return AI search data
Every provider, filtered by how it bills you
Filters are on the left. Billing model is the one worth starting with, because it decides your bill far more than the headline rate does.
Every one of the SEO APIs below was checked against its own pricing and documentation pages, not a comparison post. Where a provider publishes no public rate, the card says so rather than guessing, and the entry price shown is the cheapest published route to real data rather than a headline discount.
Showing 13 of 49 APIs
DataForSEO
FeaturedBest for pay-as-you-go volume
Twelve pay-as-you-go APIs covering SERPs, keywords, backlinks, on-page and AI search. No subscription, no monthly minimum, and the per-request rates are the lowest of any full-stack provider here.
- SERP data from Google, Bing, Yahoo, Baidu, Naver, YouTube and Seznam
- Keyword volume and CPC sourced from the Google Ads API
- Backlink index with per-row billing
- SERP results
- Keywords & search volume
- Backlinks
Best backlink data
Programmatic access to the backlink index most SEOs treat as the reference point, plus keyword and traffic data. Priced for teams that already run on Ahrefs.
- Backlink index built on one of the web's largest crawlers
- Keyword, traffic and rank data via API v3
- Site Explorer and Keywords Explorer endpoints
- Backlinks
- Keywords & search volume
- Competitor & traffic
Best for competitor research
Keyword, domain and traffic analytics from one of the two best-known SEO datasets. API access is gated behind the Business plan and units are bought on top.
- Domain and keyword analytics across 140+ databases
- Traffic Analytics for competitor benchmarking
- Projects API for site audit and position tracking
- Keywords & search volume
- Backlinks
- Competitor & traffic
Best value all-rounder
A full SEO dataset sold as a standalone credit-based API, with AI search results and a native MCP server. The most credible mid-market alternative to the big two.
- Keyword volumes, backlinks, SERP and site audit data
- AI Overview and LLM search result tracking
- Native Model Context Protocol server
- Keywords & search volume
- Backlinks
- SERP results
Best free first-party data
The only source of your site's real Google performance data, straight from Google, at no cost. Query, page and country level impressions, clicks and position.
- Search Analytics: clicks, impressions, CTR and position
- URL Inspection for index status and coverage
- Sitemaps submission and status
- Rank tracking
- Keywords & search volume
- Technical & on-page
Best documented SERP API
The best-documented SERP scraper, covering Google and a long list of other engines. You pay a clear premium for reliability, legal cover and parsing quality.
- Google, Bing, Baidu, YouTube, Maps, Shopping and more
- Structured JSON for almost every SERP feature
- Legal shield covering US customers
- SERP results
- Local & maps
- Content & SERP features
Cheapest credible SERP data
A fast, very cheap Google SERP API built for AI agents and high-volume pipelines. Prepaid credits, sub-second responses, minimal ceremony.
- Google search, images, news, places and scholar
- Sub-second response times
- Prepaid credits with no monthly commitment
- SERP results
- Local & maps
- Content & SERP features
Best for hard geotargeting
Enterprise-grade SERP collection on top of one of the largest proxy networks. Handles rotation, geotargeting and anti-bot without you thinking about it.
- SERPs from Google, Bing, DuckDuckGo, Yandex and more
- City-level geotargeting on any query
- Proxy rotation and anti-bot handling built in
- SERP results
- Local & maps
- Content & SERP features
Best structured SERP parsing
Enterprise SERP scraping with structured parsing and a per-result success guarantee. Cheaper than Bright Data at entry level, with the same class of infrastructure.
- Google, Bing, Yandex and Baidu SERPs
- Structured parsing into clean JSON objects
- Payment for successful results only
- SERP results
- Local & maps
- Content & SERP features
Best for Domain Authority
Domain Authority, Page Authority and link metrics from the index that made those scores an industry shorthand. Simple row-based pricing with a genuine free tier.
- Domain Authority and Page Authority scores
- Linking domains, anchor text and spam score
- Straightforward row-volume pricing
- Backlinks
- Competitor & traffic
Simplest credit model
An all-in-one SEO platform with API access from the Team plan up. One credit per request keeps the billing model unusually easy to reason about.
- Keyword research, backlinks and rank tracking
- Competitor and domain analysis endpoints
- One credit per API request, no multipliers
- Keywords & search volume
- Backlinks
- SERP results
Best bulk SERP value
A no-nonsense Google SERP API sold in credit packs with no subscription. Consistently one of the cheapest ways to pull real search results at volume.
- Google organic, local, news, shopping and maps
- Batch endpoint for bulk keyword sets
- Credit packs with no monthly commitment
- SERP results
- Local & maps
- Content & SERP features
Best SERP plus page scraping
A general web scraping API with a dedicated Google SERP endpoint. Useful when you need search results and arbitrary page content from the same provider.
- Google Search endpoint plus general web scraping
- JavaScript rendering and headless browser support
- Proxy rotation and CAPTCHA handling included
- SERP results
- Technical & on-page
- Content & SERP features
The six most-used, compared
Our featured pick leads. Every value below derives from the same fields as the cards above, so the table cannot disagree with them.
The APIs for enterprise SEO teams cluster at the top of this table, and they charge for depth rather than breadth: a proprietary crawl, a legal position, or a support contract. The cheaper providers are not returning worse organic results, they are returning fewer of the things around them.
Entry prices are the cheapest published route to real data, read from each vendor's own pricing page in August 2026. Rates move, so confirm before you budget.
How to choose between SEO APIs
Six things that decide whether a provider fits, in the order they usually bite. Every figure below is computed from the directory above.
Billing model decides the bill, not the rate card
The single most expensive mistake here is comparing published rates without normalising the unit behind them. One provider bills per SERP page, another per result, another per successful search, another wraps everything in credits whose cost varies by endpoint. The same workload can differ by an order of magnitude between two providers whose pricing pages look comparable.
Of the 49 providers listed, 6 bill purely per request, 38 require a monthly subscription, and 11 have no monthly floor at all. If your volume is uneven, that last number is the one that matters: a subscription charges the same in a quiet month.
What it costs to start
The spread is wider than most people expect. 26 of the 49 can be used at zero cost, either free outright or with a free tier large enough to build against. At the other end, several require four-figure monthly commitments before returning a single row.
Select a band to see which of the 49 providers sit in it. Several span more than one, so the counts add up to more than 49.
Coverage is uneven, and not where you would guess
SERP data is close to a commodity: 27 of 49 providers return it, and for plain organic results they largely agree. Backlinks are the opposite. Only 10 carry a link index, because building one means funding a web-scale crawler, which is exactly why the providers that have one charge what they do.
The newest gap is AI search. Just 7 of the 49 currently return AI Overview or LLM visibility data, so if that is on your reporting roadmap it narrows the shortlist fast.
Free does not mean limited
Two of the most useful APIs in this directory cost nothing. The Search Console API is the only authoritative source for how your own site performs in Google, and the PageSpeed Insights API returns both Lighthouse scores and real Core Web Vitals field data on a 25,000 request daily quota.
Wire both up before paying for anything. Most commercial APIs here are best understood as filling the gap those two leave, which is competitor visibility.
Read the licence before you build a product
Buying API access is not the same as buying the data. Several providers explicitly prohibit reselling or repackaging their output inside a third-party product, and accounts have been suspended for it. Others treat exactly that use case as their core market, which is why so much commercial SEO tooling runs on them.
If what you are building is internal, this rarely matters. If it is customer-facing, it decides your shortlist before price does.
Check what the data has to become
A cheap API that returns rows is only cheap if someone on your team turns those rows into an answer. The providers charging a premium are largely charging for interpretation: clustering, intent mapping, competitor gaps and a report a client can read without a translator.
That calculation is shifting. 3 of these providers now ship a Model Context Protocol server, which lets an AI client query the data directly and closes some of the gap between raw rows and a usable answer. Budget for the layer you are no longer buying, then compare total cost rather than unit price.
What practitioners actually say
Real, unedited comments from r/SEO, r/TechSEO, r/bigseo, r/SaaS and r/n8n on cost, data quality and what breaks in production. Every card links to the original.
Comments are quoted from public Reddit threads and belong to their authors. Opinions are their own, shared here for context, not endorsements.
What teams actually build
Each tile filters the directory to the providers that carry the dataset it needs.
Most SEO agency APIs get bought for one job and then quietly absorb four more. Client rank reporting is almost always the trigger; keyword research, content briefs and link qualification follow once the pipeline exists and the marginal cost of another query is a fraction of a cent.
Client rank reporting
19Nightly rankings for every client keyword, written into your own dashboard instead of exported from someone else's. The most common reason an agency goes programmatic in the first place.
See the 19Keyword research at scale
15Volume, CPC and difficulty for tens of thousands of terms at once, which is the only practical way to plan a programmatic content build or size a new market.
See the 15AI search visibility
7Tracking whether you appear in AI Overviews and LLM answers. Newer, less covered, and the fastest-moving reporting requirement most teams now have.
See the 7Link prospecting
10Qualifying thousands of link targets by authority, topical relevance and spam signals before anyone writes an outreach email.
See the 10Content briefs from live SERPs
27Pulling the current top ten for a target term, extracting what ranks and why, and feeding that into a brief or a model prompt automatically.
See the 27Technical health monitoring
22Scheduled crawls and Core Web Vitals checks that alert you when something regresses, rather than being discovered in next quarter's audit.
See the 22How we picked, and what we checked
This is a shortlist, not a census. We started from the providers that actually come up when engineering and SEO teams pick a data source, then cut it to the top SEO APIs for data integration work: the ones with public documentation, a published rate card and an endpoint you can call today.
Every price here was read from the vendor's own pricing page in August 2026, not from a comparison article. The strongest APIs for SEO work change their rates more often than their marketing, so treat every figure as a starting point for your own check rather than a quote.
Where a provider publishes no public rate, we say so. Where a Reddit comment reports a real bill, it is quoted as a user report and attributed, never restated as vendor pricing.
No affiliate links and no paid placements. Nobody here pays to be listed, to be featured, or to rank higher in the directory. Outbound links carry nofollow and we earn nothing if you sign up.
No invented ratings. We publish no star rating and no aggregate score. The scorecard on our featured review is an editorial read across six dimensions, and it stays out of the page's structured data. Third-party scores from G2 and Capterra are shown with a source, a count and the date we read them.
Reddit is a signal, not a fact. Community sentiment is quoted for context and linked back to the original comment. Where a claim contradicted the vendor's published terms, we checked the terms.
FAQ
Questions we get
What is an SEO API?
A paid or free endpoint that returns search data as structured JSON instead of a dashboard: search results, keyword volumes, backlinks, rankings or crawl data. You send a request, you get rows back, and what you do with them is up to you. It is how agencies build their own reporting and how SEO products get their data.Which provider is best?
It depends on what you are billed for. DataForSEO is the usual answer for broad coverage at per-request pricing with no monthly floor. Ahrefs has the deepest backlink index. SE Ranking is the best value all-rounder and one of the few carrying AI search data. Google Search Console is the best free option and should be wired up before you pay for anything.What is the cheapest option?
Among paid providers, DataForSEO starts at $0.0006 per SERP on its Standard queue, and Serper runs roughly $0.30 to $1 per 1,000 searches. Both beat subscription providers by an order of magnitude at volume. Google Search Console and PageSpeed Insights are free outright, though they only report on your own properties.Is there a free SEO API?
Yes. The Google Search Console API and the PageSpeed Insights API are both free with no paid tier, and Moz has a free 50-row monthly allowance. Several commercial providers also ship trial credits large enough to build a proof of concept, including SE Ranking at 100,000 credits and Serper at 2,500 free searches.Can I build a commercial product on one?
Check the licence first, because it varies sharply. Some providers explicitly prohibit reselling or repackaging their data in a third-party product and have suspended accounts for it. Others treat that as their core market, which is why so much SEO tooling is built on them. Buying access licenses you to use the data, not to redistribute it.Do I need a developer?
For most providers, yes, or at least someone comfortable with n8n, Make or a spreadsheet script. These return raw rows, not reports, and practitioners consistently warn that a non-technical team ends up spending more than a subscription tool would have cost. A handful now ship MCP servers, which lets an AI client query the data directly and lowers that bar considerably.Which ones return AI Overview data?
SE Ranking carries AI Overview and LLM search results as a first-class dataset, DataForSEO exposes them through its SERP and AI Optimization endpoints, and Scrapingdog detects AI Overview presence on its Google Search endpoint. Coverage is still thin across the market, so it narrows a shortlist quickly.How is usage normally billed?
Four models, and they are not comparable at face value. Pay as you go bills per request with no floor. Credit packs have you prepay a balance that different endpoints draw down at different rates. Subscriptions charge a fixed monthly fee whether you use it or not. Free means quota-limited but costless. Normalise to cost per useful row before comparing any two rate cards.
Want the pipeline, not just the provider?
Picking the API is the easy half. We build the layer on top: the rank tracking, the keyword pipelines, the AI search reporting and the automations that turn rows into something a client reads. Usually live in weeks, not quarters.