Datacircle

Seonio pricing: related keywords API

Seonio's siteThis page as plain textRelated keywords API: the 7 best providers comparedSeonio: related keywords API alternatives

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100% complete: all 6 key fields we checkSee the 6 fields
$0.00per 1,000 keywordsWe haven't run Seonio through our related keywords API benchmark yet.This plan is free. We rank 194 plans for related keywords APIs by price. Half the plans cost $0.60 per 1,000 keywords or less.Keys.so's ₽34,900 monthly plan is the cheapest paid plan per 1,000 keywords. Keys.so's ₽34,900 monthly plan charges nothing per call. You get as many keywords as Keys.so's rate limit allows.seodata.dev's $4.99 monthly plan covers any number of keywords. seodata.dev's $4.99 monthly plan costs less up front than Keys.so's ₽34,900 monthly plan.Bing Webmaster Tools, DataForSEO and Mangools are the best related keywords API providers in the Datacircle benchmark.
Type a number to see the cheapest Seonio plan for that many keywords. The table below then sorts the other plans by what each costs.
Plan: Free $1 one of Seonio's 10 plans
Call: POST /api/v1/keywords/suggestions Seonio's only call for this API
API: Related keywords API one of Seonio's 8 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • All 6 key fields we check. Search volume, Monthly trend, Cost per click, Competition, Keyword difficulty, Search intent.
  • Nothing to pay. You get $1 of credit once, enough for 50 pages. Calls stop once your credit runs out. Unused credit expires 30 days after the account is verified.
  • One call. You send keyword to POST /api/v1/keywords/suggestions. You can also send country. The call returns keywords like the one you send.
  • Who can get it: anyone with a verified account. Keep data: no limit. Use data: with conditions.

Seonio: related keywords API alternatives

Seonio alternatives: other related keywords API providers by price

The table starts with Seonio's cheapest paid plan. Next come plans from other providers with the price per 1,000 keywords closest to Seonio's.

Seonio, $480 yearlyWordtracker, $60 monthlyKeywordTool.io, $788 monthly, Agency, GET /v2/search/suggestions/googleSpyWords, ₽10,000 monthlyDataForSEO, top-up from $50, Pay as you go, POST /v3/dataforseo_labs/google/keyword_ideas/live
$ per 1,000 keywords$0.089$0.06$0.066$0.119$0.12
Completeness100%33%67%33%100%
Billingyearlymonthlymonthlymonthlypay first
Pay$480$60$788₽10,000$50
Enough for4,500 pages a month500 pages a month400 pages a day1,000,000 results a monthabout 416,666 results
Freshnessunknownunknownunknownunknown1 month
Who can get itanyone with an eligible accountanyoneanyone 18 or over with a Keyword Tool accountanyone who applies with the tasks they want to solve with the API: a token is generated once the application is processedanyone not in Russia, Belarus, Cuba, Iran, Syria, Myanmar, North Korea or Russian-occupied Ukraine

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-06.

  1. seonio.com/pricing
  2. seonio.com/product/api
  3. seonio.com/product/api/keywords/suggestions
  4. seonio.com/terms

Product details

The key fields this plan's answer can hold, then each filled column in its row on the sheet.

  • Search volume
  • Monthly trend
  • Cost per click
  • Competition
  • Keyword difficulty
  • Search intent
Price
$ per 1,000 keywords$0.00
Perpage of 100
Billingfree
Charges
Also pays forfrom the same budget: Keyword Research · Keyword Difficulty · Keyword Intent · Keyword Demographics · Keyword Clustering · Keyword Metrics by Country · SERP · SERP Scraper · Scraper · Website Traffic · Website Ranking · Website Category · Website Competitors · Similar Websites · URL Stats · URL Keywords · Website Stats · Backlink History · Backlink Table · AI Visibility Report · AI Visibility Result · Site Audit · Site Audit Result · Seonio SEO Agent · SEO Page Checker
Overage
Units caphard
Not found
$ per 1,000$0.00
In their words
Their pitchUp to 100 related keyword ideas — each with full metrics — from one seed keyword.
Data
Keep datano limit
Use data[...] you may use reports, API responses, and outputs generated through your account for: your internal business purposes, your own websites, products, applications, and projects, client work performed by you or your organization, integrations that use Seonio data as part of a broader product or workflow, provided that you comply with these Terms and applicable law [...] You must not: resell standalone access to Seonio, resell or sublicense API access, API keys, or your account, resell raw datasets, raw API responses, or raw outputs as a separate data product, use the Service or outputs to build a substantially similar competing service without our written permission, misrepresent Seonio outputs as official, guaranteed, real-time, or independently verified data, remove or obscure any usage restrictions, source notices, or attribution requirements that may be shown in the Service
Plan
Pay$0
You get$1
Enough for50 pages, once
Expires30 days after the account is verified
Rate limit
Per second5
Batch1
Speed
Answerin the call
The call
You sendkeyword. Optional: country
MethodPOST
Path/api/v1/keywords/suggestions
About the plan
PlanFree $1
Who can get itanyone with a verified account
The 11 fields the plan's answer can hold

seed keyword, country code, keyword, search volume, cost per click, low top of page bid, high top of page bid, competition index, monthly searches, keyword difficulty, search intent

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