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DataForSEO: related keywords API pricing, 3 plans, POST /v3/keywords_data/google_ads/keywords_for_keywords/live

DataForSEO's sitellms.txtBest related keywords API in 2026

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67% complete: 4 of the 6 key fields we checkSee the 6 fields
$0.00per 1,000 keywordsWe rank 53 plans by price. Mangools's $15 monthly plan costs the least per 1,000 keywords: $0.0001. Mangools charges for each page of results. We count 10,000 keywords on each page to get the $0.0001 price.Mangools, DataForSEO and SE Ranking are the best related keywords API providers in our benchmark.
Plan: $1 trial credit one of DataForSEO's 3 plans
Call: POST /v3/keywords_data/google_ads/keywords_for_keywords/live one of DataForSEO's 5 calls for this API
API: Related keywords API one of DataForSEO's 9 APIs

About this item

  • Live. DataForSEO finds keywords like the keyword you send when you call the API.
  • 4 of the 6 key fields we check. Search volume, Monthly trend, Cost per click, Competition.
  • Nothing to pay. You get $1 of credit once, enough for about 11 pages. Credit never expires.
  • One call. You send keywords to POST /v3/keywords_data/google_ads/keywords_for_keywords/live. The call returns keywords like each one you send.
  • Who can get it: with conditions. Keep data: no limit. Use data: with conditions.

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-29.

  1. dataforseo.com/apis/domain-analytics-api
  2. dataforseo.com/help-center/how-does-your-free-unlimited-trial-work
  3. dataforseo.com/pricing
  4. dataforseo.com/pricing/keywords-data/google-ads
  5. dataforseo.com/terms-of-service/
  6. docs.dataforseo.com/v3/domain_analytics/technologies/domain_technologies/live/
  7. docs.dataforseo.com/v3/keywords_data/google_ads/keywords_for_keywords/live/

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, not in the answer
  • Search intent, not in the answer
Price
$ per 1,000 keywords$0.00
Perpage of 20,000
Billingfree
Charges
Repeat freenever
Also pays forfrom the same budget: SERP API · AI Optimization API · Backlinks API · Content Analysis API · DataForSEO Labs API · Keywords Data API · OnPage API · Merchant API · App Data API · Business Data API · Reviews API · Domain Analytics API
Not found
$ per 1,000$0.00
In their words
Their pitchThis endpoint will provide relevant keywords for the specified terms. Set up to 20 keywords in the keywords array and get keyword suggestions from Google Ads.
Data
Freshnesslive
Keep datano limit
Use dataany search engine results page (SERP) data or content obtained through the Service, including but not limited to data from Google, Bing, Yahoo, and other search engine providers, shall not be used to compete with or adversely affect the business interests of the search engine providers from which such data originates
Plan
Pay$0
You get$1
Enough forabout 11 pages, once
Expiresnever
Rate limit
Per second0.2
Batch20
The call
You sendkeywords. Optional: location_name, location_code, location_coordinate, language_name, language_code, search_partners, date_from, date_to, sort_by, include_adult_keywords, tag
MethodPOST
Path/v3/keywords_data/google_ads/keywords_for_keywords/live
About the plan
Plan$1 trial credit
Who can get itnew accounts, one each, not in Russia, Belarus, Cuba, Iran, Syria, Myanmar, North Korea or Russian-occupied Ukraine
The 12 fields the plan's answer can hold

keyword, location code, language code, search partners, competition, competition index, search volume, low top of page bid, high top of page bid, cost per click, monthly searches, keyword concepts

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