DataForSEO Competitors: 12 SEO Data and SERP APIs Ranked by Buyer Demand

By Jan Suski. I go deep on every review, checking every number against its source and digging up details other coverage misses, a habit from six years of SEO and link building for tech companies. Bylines at Brand24 and Senuto. How the scoring works.

Published 10 November 2026

The DataForSEO API sells no subscription. A $50 top-up opens a prepaid balance, a $1 trial credit covers the first tests, and every call is billed from the balance. A Google organic SERP of 10 results costs $0.0006 in the standard queue, or $0.60 per 1,000, $1.20 per 1,000 in the priority queue and $2.00 per 1,000 in Live mode.

This page lists twelve DataForSEO alternatives that developers and SEO teams search against it, ordered by coverage on this site, then by measured search demand. It's written for engineers building rank trackers, agencies running client reports, and SEO professionals pulling raw data into a spreadsheet or an AI agent. DataForSEO raised most non-SERP prices by 20% on 1 July 2026, so many teams are going back to the drawing board on their data costs this year.

Each entry names the one difference that decides the switch, puts a figure on it, and links to the page that argues it in full. Four of the twelve undercut DataForSEO's $2.00 Live rate on raw SERP data at some tier, and none undercuts its $0.60 standard queue at entry volumes. The others sell an index DataForSEO doesn't have, a flat subscription model or a single data type at depth.

Price your own workload before you switch

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$1 in free credit lands on signup and a $50 minimum top-up opens the account; standard Google SERPs run $0.60 per 1,000.

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Three SEO suites that sell their own index through an API, from $129 a month to quote-only

These three DataForSEO competitors built an SEO tool first and opened its database through an SEO API second. Each sells data DataForSEO can't match on one axis, and each charges a subscription before the first call. API units, rows or credits then meter what a team pulls.

01Semrush API

The Semrush API is an SEO API that opens the same database that powers the Semrush app: 27 billion keywords and 43 trillion backlinks. DataForSEO's own live counter shows 1,694,527,464,931 backlinks, about 1.7 trillion. For backlink profiles of large sites, the Semrush index is the deeper data source on raw size, and on that count DataForSEO's index is a drop in the bucket.

Access costs more before the first call. The Standard API needs the SEO Classic Business plan at $499.95 a month, and the API units themselves are sold in packages of 2, 5, 10 or 20 million with no published price; sales quotes them. Pro and Guru plans get no API. A DataForSEO account opens with $50, so the entry gap is ten times on the first month alone.

Units meter everything. A backlinks line costs 40 units in Semrush's own knowledge base example, historical data costs more units than live data, and unused units expire when the plan renews. Traffic and market data sit in a separate Trends API, sold by quote, with 10,000 requests a month as the default.

Vendr tracks a $11,999 median across all Semrush contracts, apps included, so API-only spend isn't broken out. Adobe completed its purchase of Semrush on 28 April 2026, which puts the roadmap with a new owner. For a team that already pays for Business, the API is a natural add-on; for a startup building a product, the $6,000 a year gate is a bitter pill to swallow.

Billing draws complaints on the app side too. A Trustpilot reviewer wrote in October 2026: "Semrush immediately charged my card $318 without making the immediate payment clear to me."

Where Semrush ranks and how it scored →

02Ahrefs API

Ahrefs moved its SEO API down market. Its help centre now states that API v3 works on "Lite and higher subscription plans", so access opens at $129 a month with 200,000 API units and 100 rows per request. Standard at $249 raises that to 800,000 units and 250 rows, and Advanced at $449 to 2 million units and 500 rows. Enterprise adds uncapped access and custom endpoints by quote.

The index is the draw. Ahrefs filters 29 billion keywords from 110 billion it has seen and holds 35 trillion historical backlink records. It publishes no live backlink count, so a straight comparison with DataForSEO's 1.7 trillion live counter isn't possible. Domain Rating, referring domains and anchor text data are all available as endpoints.

The row cap shapes what Lite can do. At 100 rows per request, pulling 10,000 backlinks for one domain takes 100 calls, and Ahrefs states no price for extra units. Pay-as-you-go units expire after three billing months. DataForSEO bills $0.024 a request plus $0.000036 a row on its Backlinks API, with no row cap per request in the same sense.

Ahrefs ships an MCP server on every paid tier with the same row caps as the direct API, which matters for teams wiring SEO data into Claude or ChatGPT. Vendr tracks a $21,980 median across all Ahrefs contracts. For an SEO team already on Lite, the API is part of the seat; for a SaaS product that needs millions of rows, Enterprise's uncapped access is the tier to price.

An SEO specialist on G2 wrote: "I especially like its backlink analysis, site audit, and detailed SEO performance insights."

Where Ahrefs ranks and how it scored →

03Similarweb API

Similarweb sells the one data type nobody else on this list sells: modelled traffic and engagement estimates for websites. DataForSEO offers organic traffic estimates inside its Labs database, but no visits, bounce rate or channel split for a domain. Similarweb's API returns those by country and by week, and its keyword endpoints cover 5 billion search terms.

Pricing runs on data credits. One credit buys one data point on a standard endpoint, or 100 keyword results, and Similarweb's own example prices traffic sources for 2 countries over 3 months of weekly data at 576 credits. Errors and empty responses aren't billed. The price of a credit isn't published, and an account manager sets the allocation.

The API can be bought without the platform, as a standalone package. Vendr tracks a $37,826 median for the whole Similarweb platform, and SpendHound reports a $13,602 average for small-business customers, also platform-wide. Similarweb has no backlink index and gives no data for small sites under 5,000 visits a month.

Trial terms draw complaints. A Trustpilot reviewer wrote in September 2026: "I applied for the 7 day free trial . But I found that I could not cancel it after 3 days ."

Where Similarweb ranks and how it scored →

Two proxy networks that sell live SERP scraping from $1 per 1,000 results

Bright Data and Oxylabs run proxy infrastructure first and sell SERP scraping on top of it. Both undercut DataForSEO's $2.00 Live rate for real time data. Neither sells keyword volume, backlink data or a keyword database, so a team switching for SERPs keeps DataForSEO or another API for keyword metrics.

04Bright Data SERP API

Bright Data charges $1.50 per 1,000 requests pay-as-you-go for live search results, under DataForSEO's $2.00 Live mode. The Scale plan, at $499 a month, buys 380,000 requests and bills $1.30 per 1,000 after that. The free tier gives 5,000 requests a month with no card, and only successful requests are billed.

Against DataForSEO's standard queue the sum flips. A team that can wait for results pays $0.60 per 1,000 at DataForSEO, so Bright Data costs 2.5 times as much for batch rank tracking. The case for Bright Data is live results at scale, and here it's on the ball: up to 5,000 simultaneous requests, Google, Bing, DuckDuckGo and Yandex, and LLM scrapers for ChatGPT, Google AI Mode, Gemini and Perplexity.

Bright Data sells no keyword volume, no CPC and no backlinks. Its Web Unlocker fetches any rendered page at the same $1.50 per 1,000, and an open-source MCP server shares the free credit pool. Vendr tracks a $27,000 median, but across all Bright Data spend, proxies included.

The terms are strict. Fees are non-cancelable and non-refundable under Section 4.1 of the service agreement, and notice by email ends service at the end of that calendar month. The first deposit is matched up to $500, which sweetens the first month, so read Section 4.1 before you bite off more than you can chew.

A verified small-business user on G2 wrote: "Pricing is the main pain point, especially for smaller customers."

Test live SERPs on the free tier

Start with Bright Data

5,000 free requests a month on the SERP API with no card; pay-as-you-go after that runs $1.50 per 1,000 requests.

Start with monthly free credits →

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Where Bright Data ranks and how it scored →

05Oxylabs

Oxylabs prices Google results without JavaScript rendering at $1.00 per 1,000 at entry, falling to $0.50 past 5 million results a month. With JavaScript rendering the range runs $1.35 to $0.90, and Google AI Mode $1.50 to $0.90. ChatGPT, Perplexity and Gemini answers cost $1.50 to $1.30 per 1,000.

The account opens with one $15 monthly subscription that unlocks every product, plus a $5 welcome credit. Basic costs $100, Flexible $500, and Enterprise starts at $2,500 a month. Past 5 million results, Oxylabs' $0.50 rate is below DataForSEO's $0.60 standard queue, which makes it the one tool here that can beat DataForSEO on raw SERP cost at the highest volumes, and for a team running 10 million SERPs a month that's a feather in the cap of whoever signs the contract.

The product line is broader than SERPs: residential, mobile, ISP and datacenter proxies, a Web Unblocker, an Agent Browser and datasets from $400 a month. OxyCopilot writes parser code from a prompt. Oxylabs bought ScrapingBee in June 2025, so entry 10 on this list belongs to the same group.

A Trustpilot reviewer in October 2026 described a paid renewal, a sudden suspension and contradictory support as "an appalling experience". Oxylabs holds a 3.9 TrustScore from 773 reviews.

Where Oxylabs ranks →

Three SEO data APIs sold on published plans or API credits, from a $50 deposit to $399.99 a month

SpyFu, Majestic and SE Ranking publish a price for API access on their own pages. Each one goes deep on a narrower slice of SEO data than DataForSEO, except SE Ranking, which matches all six functions.

06SpyFu API

SpyFu keeps Google Ads history back to 2007 and claims coverage of 99.93% of Google advertisers. DataForSEO sells Google Ads keyword data and SERP ads, but no long archive of which ads a competitor ran. For PPC competitive analysis, that archive is SpyFu's competitive edge, and it puts a PPC team ahead of the curve on rival ad copy.

The API comes inside the Pro plan at $79 a month, or $58 billed yearly, with a $40 monthly API credit. Rows cost $0.20 to $5.00 per 1,000 by endpoint: ad history and ranking history at $3.00, keyword research from $0.20 to $2.50. Usage past the credit is charged to the card on file. The Basic plan at $39 includes no API.

For keyword research, SpyFu indexes 8 billion keywords with detailed metrics on its developer pages and 1.6 trillion search results. Its API has no backlink endpoints. A team that wants SEO data and PPC history together can run SpyFu for ads and DataForSEO for backlinks, and keep both bills small: the best of both worlds.

One Reddit PPC user wrote: "SpyFu isn't very accurate. Put your own URL in there and check out what numbers it gives you and compare that to what you're actually spending."

Where SpyFu ranks and how it scored →

07Majestic

Majestic sells backlinks and nothing else. Its API plan costs a flat $399.99 a month, or $3,999.90 a year, for 100 million analysis units, and only the API plan can create OpenApps. Lite at $49.99 and Pro at $99.99 include no API.

The index is measured in URLs. Majestic's Fresh Index has crawled 190 billion URLs and found 552 billion between July and November 2026, and its Historic Index holds 4.5 trillion crawled URLs from 2006. Trust Flow and Citation Flow, Majestic's link metrics, come back on every call. DataForSEO stores backlinks back to 2019.

The Historic Index was last updated in May 2024, so recent link history comes from the Fresh Index only. Majestic sells no keyword data, no SERP data and no site audits. For a link building agency that lives in backlink profiles, a flat price with no per-row billing is a blessing in disguise at month end.

Full Majestic vs Ahrefs breakdown →

08SE Ranking API

SE Ranking offers the closest copy of the DataForSEO bundle, and for many teams it's the best DataForSEO alternative on scope alone. Its Data API covers keywords, backlinks, domains, SERP data, site audits and AI visibility, and it opens on the same $50 pay-as-you-go deposit, which buys 250,000 credits. Its index holds 5.5 billion keywords, 2.9 trillion backlinks and 411 million referring domains, across 188 countries.

Subscriptions bundle credits too. Core costs $129 a month, or $103.20 billed yearly, with 25,000 API credits and MCP access, and Growth costs $279 with 100,000 credits. An API add-on runs $45 to $48 a month on the subscription page and from $149 a month on the API page, two figures on two vendor pages. SE Ranking also tracks 25.5 million AI prompts for its AI visibility data.

The missing piece is a price per request. SE Ranking's API page doesn't show how many credits each endpoint costs, so a buyer can't model a month's bill the way DataForSEO's per-call price list allows. Ask for the credit table before moving a rank tracker, so the first invoice doesn't come out of the blue.

A Trustpilot reviewer wrote of the app in August 2026: "I think you get just as much as you do with the more expensive tools, but for 1/3 of the price."

Where SE Ranking ranks →

Four pay-monthly APIs that start between $19 and $25

Apify, ScrapingBee, SerpApi and Moz each publish an entry plan from $19 to $25 a month. Three of them scrape search results; Moz sells link and keyword metrics. All four bill by a monthly allowance, so the price per call depends on how much of the allowance a team uses.

09Apify

Apify is a scraping platform with 114,950 ready-made scrapers, called Actors, in its Store. Google SERPs cost $2.50 per 1,000 through its proxy on the Free and $19 Starter plans, falling to $2 on Scale and $1.70 on Business. The Google Search Scraper Actor starts at $1.80 per 1,000 result pages and captures organic results, ads and People Also Ask, with AI Overviews as a paid add-on.

At $2.50 per 1,000, Apify costs about four times DataForSEO's $0.60 standard queue. The case for Apify is everything that isn't Google: the same account scrapes marketplaces, maps, social networks and job boards, and Crawlee, its open-source library, runs the same code locally, which makes Apify a jack of all trades for scraping. The Free plan renews $5 of usage each month with no card.

Billing runs on compute units, $0.20 each on Free and $0.13 on Business, plus proxy traffic and any per-result fee a Store Actor adds. That makes the first month hard to predict, and unused prepaid usage expires each cycle. Annual billing takes 10% off.

A self-employed reviewer on TrustRadius wrote, as captured in this site's data extraction tools ranking: "The results are often incomplete, missing email addresses, names, or phone numbers."

Where Apify ranks →

10ScrapingBee

ScrapingBee sells a web scraping API on monthly credits, and its Google Search API is one endpoint on the same pool. A search costs 10 credits with Light Request enabled and 15 without, so the $19 Hobby plan's 75,000 credits buy 5,000 to 7,500 searches: $2.53 to $3.80 per 1,000. On Enterprise 120, at $5,799 a month for 120 million credits, the rate falls to $0.48 to $0.72.

Those per-1,000 figures are derived from ScrapingBee's credit rules; it doesn't publish a per-search price. JavaScript rendering costs 5 credits a request, premium proxies 10 or 25, and stealth proxies 75. ChatGPT and Gemini endpoints run on the same credits, and 1,000 free credits come with no card.

ScrapingBee has been part of the Oxylabs group since June 2025. It sells no keyword data and no backlinks. For a developer who wants one scraping API for Google, Amazon and arbitrary sites, the credit model is simple; for a rank tracker running 100,000 keywords a day, it's not rocket science: the sums favour DataForSEO's queue.

A manager on Capterra wrote, as captured in this site's web scraping tools ranking: "Credits are consumed quickly when using JavaScript rendering or advanced features, making it harder to justify for smaller projects."

Where ScrapingBee ranks →

11SerpApi

SerpApi draws 140 searches a month for "serpapi alternative" and 20 for the pair against DataForSEO, tied with Semrush and Ahrefs for the most measured pair demand. It charges per search on a monthly plan: Starter $25 for 1,000, Developer $75 for 5,000, Production $150 for 15,000 and Big Data $275 for 30,000. Production works out to $10 per 1,000, about 17 times DataForSEO's $0.60 standard queue.

The premium buys legal cover and simplicity. SerpApi's Legal Shield covers up to $2 million of liability from the Production plan, failed and cached results aren't counted, and every plan carries a 99.95% uptime SLA. It covers Google and other engines and marketplaces, plus Google AI Overview, AI Mode and Bing Copilot, and a Google Trends API for keyword trends.

Plans run month to month with 250 free searches, and SerpApi refunds in full within 7 days if under 20% of the plan was used. Each plan caps hourly throughput at 20% of its volume. Enterprise adds ZeroTrace Mode, which keeps no logs. For legal teams that worry about scraping risk, SerpApi goes the extra mile, and the price reflects it.

A telecoms reviewer on Capterra wrote in July 2026 that "they were only accessible by email, there is no live chat in their site or snything similar".

12Moz API

The Moz API is the cheapest paid SEO API entry on this list: $20 a month for 3,000 rows. Starter Large costs $75 for 15,000 rows, and Growth runs $125, $250 and $500 for 50,000, 120,000 and 500,000 rows, with overage on every plan. Enterprise covers more than 4 million rows a month by quote.

Moz sells its own link metrics. Domain Authority, Page Authority and Spam Score come back as API fields from an index of 45.5 trillion links across 1 billion domains. For keyword research, Keyword Metrics returns volume, difficulty and organic CTR from 1.25 billion monthly volumes, and the API stores 25 billion historical SERPs, adding 440 million a month.

Moz has no on-page crawl endpoint and no LLM data in its call list. For an agency whose client reports quote Domain Authority, the Moz API is the source of record, and switching would leave the agency back to square one on historical comparisons; for a product that needs raw SERP data daily, DataForSEO stays cheaper. An MCP server is in beta on every plan.

DataForSEO pricing against the 12 alternatives: cost per 1,000 SERPs and entry price

On raw SERP data, DataForSEO's standard queue is the cheapest published entry rate here, at $0.60 per 1,000. Only Oxylabs past 5 million results and ScrapingBee's top Enterprise plan go lower. On SEO data, the comparison runs on entry price, since every vendor meters calls differently.

Vendor pricing pages and API documentation, Vendr marketplace headers, checked 10 November 2026. SERP prices are per request or per results page as each vendor defines it.

A worked example shows the spread in cost efficiency. A rank tracker checking 1,000 keywords a day, top 10 results only, runs 30,000 SERPs a month. That costs $18 in DataForSEO's standard queue, $60 in Live mode, $45 at Bright Data pay-as-you-go and $30 at Oxylabs. At SerpApi it needs the Big Data plan at $275. Pull the top 100 results and DataForSEO's bill rises to $180, because each page of 10 is billed.

Subscriptions change the arithmetic for SEO data. A year of Ahrefs Lite costs $1,548 with API access included, Moz's smallest plan $240, and Majestic's API plan $3,999.90 billed yearly. Semrush's Business gate costs $5,999.40 a year before units. A DataForSEO account that spends $50 a month costs $600 a year, and a quiet month costs nothing.

The vendors disagree with themselves in places, and the table uses the figure tied to a purchasable plan:

• Bright Data's site menu says "from $1/1k" while its SERP plan card says $1.50.
• SE Ranking lists its API add-on at $45 to $48 on the subscription page and from $149 on the API page.
• DataForSEO's pricing page lists Backlinks at $0.024 a request, while its help centre still shows $0.02 and a $100 monthly minimum.

What a DataForSEO replacement has to cover

DataForSEO aggregates six distinct APIs behind one DataForSEO API key, one account and one balance, and each data type sits on its own endpoint. A full replacement has to cover each, and only SE Ranking claims all six. Most teams replace one or two functions with specialized APIs and keep the rest:

• SERP data: live and queued results from Google and other search engines, with featured snippets, local results and AI Overviews. Bright Data, Oxylabs, SerpApi, Apify and ScrapingBee sell this.
• Keyword data: search volume, CPC and trends from Google Ads. Semrush, Ahrefs, SpyFu, SE Ranking and Moz sell this from their own databases.
• Backlink data: links, referring domains and anchor text data. Semrush, Ahrefs, Majestic, SE Ranking and Moz sell this.
• Keyword and domain research database: ranked keywords, competitors and organic traffic estimates per domain. Semrush, Ahrefs, SpyFu, SE Ranking and Similarweb sell versions of this.
• On-page and site crawl data: site audits, page checks and Core Web Vitals. SE Ranking and the Semrush Projects API come closest.
• AI and LLM visibility data: brand mentions in ChatGPT and other models. SE Ranking tracks 25.5 million prompts; Bright Data and Oxylabs scrape LLM answers.

Integration complexity rises with each vendor added. Each of the different APIs returns its own response schema, so a team that splits DataForSEO across three providers writes three parsers and watches three balances. That cost belongs in the comparison next to the price per 1,000, because a cheap SERP rate can cost an arm and a leg in engineering time.

Where each data source gets its data

SERP data has one source: the search engine itself, fetched through scraping infrastructure at the moment of the request or from a queue. DataForSEO, Bright Data, Oxylabs, SerpApi, Apify and ScrapingBee all fetch live pages and return them as structured data, with snippets and local packs parsed in the same call. Differences come from proxies, rendering and parsing, which is why the same 50 queries can return different link formats on different days.

SEO data comes from each vendor's own crawler and models. Ahrefs, Majestic, Moz and Semrush crawl the web to build their backlink indexes, which is why their counts differ by trillions. Keyword volume starts with Google Ads data and is adjusted by each vendor's model, so two APIs can return different volumes for the same keyword without either being wrong.

Traffic estimates are modelled from panels, clickstream and public data. Similarweb's figures are estimates, which is why it returns nothing for sites under 5,000 visits a month. Fresh data and data depth trade off against each other: Majestic's Fresh Index refreshes daily, while its Historic Index stopped updating in May 2024.

How to test search results and data quality before switching from DataForSEO

A one-week test settles most switching decisions, and most tools offer free trials or free credits large enough to run it. Bright Data gives 5,000 free requests a month, SerpApi 250 searches, ScrapingBee 1,000 credits, Apify $5 of usage and DataForSEO a $1 credit, enough for about 1,600 standard SERPs.

1. Pick 200 keywords across three countries, including 20 with local packs and 20 that show AI Overviews.
2. Run them through DataForSEO and the challenger on the same day, from the same location settings; precise geo targeting decides what a local pack shows.
3. Compare the top 10 organic results URL by URL, and count matches out of 2,000.
4. Check that featured snippets, local packs and AI Overviews parse into the same fields every time.
5. Time the Live calls and note failures, retries and anything billed for a failed call.
6. Run the same keywords again a day later to see how stable each source is, and keep an eye on any field that changes shape between runs.

For SEO data, test each DataForSEO API alternative against your own site. Pull your domain's backlinks and keyword rankings from each API and compare them with Google Search Console. The tool closest to your own numbers on your own domain is the one to trust on a competitor's, and trusting a vendor's counter without that check is barking up the wrong tree.

How these 12 DataForSEO alternatives were chosen

The list starts from demand. Measured "DataForSEO vs" searches total 60 a month in the US: SerpApi, Semrush and Ahrefs at 20 each, Google Ads data via DataForSEO, 12-month average to September 2026. Every other tool on the list has measured demand for its API or as an "alternative" query, from 30 a month for "majestic api" to 720 for "semrush api".

Order follows coverage on this site first. Tools with a published review or comparison come first, then tools ranked in one of our lists, then tools named in our prose. Inside each step, measured search volume sets the order. Affiliate status plays no part. DataForSEO and Bright Data are the two tools on this page with affiliate links.

Run the one-week test on both sides

Open a DataForSEO account

The $1 trial credit covers about 1,600 standard SERPs, enough to compare against any API on this page.

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Serper, SearchApi, Scrapingdog, ValueSERP, Zenserp and Serpstat were checked and left out of the numbered entries for lack of measured comparison demand. Each tool's features, prices and terms come from its own site and SEO API documentation, the same way the DataForSEO API price list was read, and every price was checked on 10 November 2026.

Questions buyers ask about DataForSEO alternatives

What is the best DataForSEO alternative?

The best DataForSEO competitors depend on the job. For the full bundle, SE Ranking's API is the closest match, with all six functions on the same $50 pay-as-you-go entry. For live SERPs only, Bright Data at $1.50 per 1,000 and Oxylabs from $1.00 per 1,000 undercut DataForSEO's $2.00 Live rate. For backlink data depth, Semrush and Ahrefs hold the largest indexes.

What is the cheapest DataForSEO alternative?

For SERPs, none of the twelve beats DataForSEO's $0.60 standard queue at entry volume. Oxylabs falls to $0.50 per 1,000 past 5 million results a month, and Serper advertises from $0.30 per 1,000. For SEO data, Moz's $20 plan is the cheapest paid entry.

How much does DataForSEO cost?

DataForSEO bills per call from a prepaid balance with a $50 minimum top-up and a $1 trial credit. A Google SERP of 10 results costs $0.0006 standard, $0.0012 priority and $0.002 Live. Keywords Data costs $0.06 per task of up to 1,000 keywords, and Backlinks $0.024 a request plus $0.000036 a row.

What does DataForSEO do?

Its APIs sell SEO data: SERP results, keyword data from Google Ads, a backlink index, the Labs keyword and domain database, an On-Page crawler and AI Optimization endpoints for LLM mentions. Its homepage counters list 8,549,369,574 keywords and 1,694,527,464,931 live backlinks.

Is DataForSEO legit and accurate?

Yes. It's a legitimate data vendor with a 4.5 Trustpilot rating from 58 reviews and a published per-call price list. Its one-star reviews from 2026 cite a payment that wasn't credited and inaccurate data. Its own comparison page claims a Live API turnaround of 6 seconds at most and a rate limit of 10,000 requests a minute for most APIs.

What are the key differences between DataForSEO and SerpApi?

DataForSEO bills per call from a prepaid balance at $0.60 per 1,000 standard SERPs and also sells keyword, backlink and AI data. SerpApi bills per search on monthly plans, $10 per 1,000 on Production, sells SERPs only and adds Legal Shield cover of up to $2 million.

Is there a free alternative to DataForSEO?

Several SEO API vendors offer free trials or give a free account a monthly allowance: Bright Data 5,000 requests, SerpApi 250 searches, Apify $5 of usage and Moz a free tier. None replaces DataForSEO's keyword or backlink data for free.

Which are the best DataForSEO competitors for rank tracking?

For a rank tracker, DataForSEO's own standard queue is hard to beat at $0.60 per 1,000 SERPs. Oxylabs is the closest on price, from $1.00 per 1,000 and $0.50 past 5 million results, and Bright Data sells live results at $1.50 per 1,000 with 5,000 free requests a month. SE Ranking's Project API adds rank tracking as a managed service.

Do I need DataForSEO if I already use Ahrefs or Semrush?

For raw SERP data at volume, yes: neither Ahrefs nor Semrush sells live SERPs by the thousand the way DataForSEO's queue does, at $0.60 per 1,000. For backlink and keyword lookups, Ahrefs' API from the $129 Lite plan may cover what a team needs without a second vendor.