Datacircle

TheKeyword pricing: related keywords API

TheKeyword's siteThis page as plain textRelated keywords API: the 9 best providers comparedTheKeyword: related keywords API alternatives

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17% complete: 1 of the 6 fields on our checklistSee the 6 fields
$0.00per 1,000 keywordsWe haven't run TheKeyword through our related keywords API benchmark yet.This plan is free. We rank 226 plans for related keywords APIs by price. Half the plans cost $0.596 per 1,000 keywords or less. See the best free related keywords API plan.Keys.so's ₽34,900 (about $417) monthly plan is the cheapest paid plan per 1,000 keywords. Keys.so's ₽34,900 (about $417) 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 (about $417) 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 TheKeyword plan for that many keywords. The table below then sorts the other plans by what each costs.
Plan: Free one of TheKeyword's 5 plans
Call: GET /api/v1/keywords/{slug}/related TheKeyword's only call for this API
API: Related keywords API one of TheKeyword's 2 APIs

About this item

  • Stored. You get keyword data from TheKeyword's database. TheKeyword doesn't say how old the data is.
  • 1 of the 6 fields on our checklist. Search volume.
  • Nothing to pay. You get 3 credits a month, enough for 3 pages. Calls stop once your credits run out.
  • One call. You send slug to GET /api/v1/keywords/{slug}/related. You can also send geo. The call returns keywords like the one you send.
  • Who can get it: anyone at least 18 years old, one free account per person or entity. Keep data: no limit. Use data: with conditions.

TheKeyword: related keywords API alternatives

TheKeyword alternatives: other related keywords API providers by price

We list other providers' plans closest to this plan in price per 1,000 keywords. Each plan in the table gives stored data.

This planTheKeyword, freeYepAPI, free credit, POST /v1/seo/keywords/ideasAnyAPI, free trial key, POST /v1/run/ahrefs.keyword_ideasAlura, freeWordRadar, free
$ per 1,000 keywords$0.00$0.00$0.00$0.00$0.00
Completeness17%100%33%33%0%
Billingfreefreefreefreefree
Pay$0$0$0$0$0
Enough for3 pages a monthabout 16,666 results, onceabout 9 pages, once100 pages a month25 pages
Freshnessstoredstoredstoredstoredstored
Who can get itanyone at least 18 years old, one free account per person or entityanyoneanyone 18 or over, with no account, for business or professional use, not in an embargoed jurisdiction or on a restricted-party listanyone with an Alura account (workspace owners and admins create the API key)anyone with an invite code: sign-up is invite-only during the private beta

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-07.

  1. raw.githubusercontent.com/andginja/keywordskills/main/skills/keyword-analysis/SKILL.md
  2. raw.githubusercontent.com/andginja/keywordskills/main/skills/keyword-lookup/SKILL.md
  3. raw.githubusercontent.com/andginja/keywordskills/main/skills/thekeyword-setup/SKILL.md
  4. thekeyword.io
  5. thekeyword.io/pricing
  6. thekeyword.io/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, not in the answer
  • Cost per click, not in the answer
  • Competition, not in the answer
  • Keyword difficulty, not in the answer
  • Search intent, not in the answer
Price
$ per 1,000 keywords$0.00
Perpage, size not stated
Billingfree
Charges
Start fee$0.00
Also pays forfrom the same budget: Single Keyword Analysis
Overage
Units caphard
Not found
$ per 1,000$0.00
In their words
Their pitchEvery analysis includes available SERP data, related keywords and metrics at no extra cost.
Data
Freshnessstored
Keep datano limit
Use dataTerms of Service, 4. Acceptable Use: "You agree not to: Share or resell API keys or data to third parties without authorization, Attempt to circumvent rate limits or usage quotas, Use the Service for any unlawful purpose, Reverse-engineer, scrape, or systematically download data beyond your plan limits, Interfere with the Service's infrastructure or other users' access"
Plan
Pay$0
You get3 credits a month
Enough for3 pages a month
Rate limit
Batch1
Speed
Answerin the call
The call
You sendslug. Optional: geo
MethodGET
Path/api/v1/keywords/{slug}/related
About the plan
PlanFree
Who can get itanyone at least 18 years old, one free account per person or entity
The 2 fields the plan's answer can hold

keyword, search volume

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