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Ahrefs pricing and alternatives: related keywords API, matching-terms, Matching terms, full

Ahrefs's sitellms.txtBest related keywords API in 2026: pricing compared

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50% complete: 3 of the 6 key fields we checkSee the 6 fields
$44.505per 1,000 keywordsHalf of the 66 plans we rank by price cost $0.623 per 1,000 keywords or less. This plan is the most expensive of the 66 plans.Mangools's $15 monthly plan is the cheapest paid plan 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: Lite one of Ahrefs's 7 plans
Call: GET /v3/keywords-explorer/matching-terms, Matching terms, full one of Ahrefs's 4 calls for this API
API: Related keywords API one of Ahrefs's 6 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • 3 of the 6 key fields we check. Search volume, Cost per click, Keyword difficulty.
  • A monthly subscription. You pay $129 a month for 200,000 credits, enough for about 2,898 results.
  • One call. You call GET /v3/keywords-explorer/matching-terms with the inputs in Product details. The call returns keywords like each one you send.
  • Who can get it: anyone with an Ahrefs account, only workspace owners and admins create API keys. Keep data: with conditions. Use data: with conditions.

Ahrefs: related keywords API alternatives

We list other providers' plans closest to this plan in price per 1,000 keywords.

This planAhrefs, $129 monthly, Lite, GET /v3/keywords-explorer/matching-terms, Matching terms, fullKeywords Everywhere, $84 yearly, Bronze, POST /v1/get_related_keywordsSE Ranking, top-up from $50, Wallet, GET /v1/keywords/similarSpyFu, $2,244 yearly, Team / Agency, GET /apis/keyword_api/v2/related/getRelatedKeywordsMoz, $20 monthly
$ per 1,000 keywords$44.505$1.68$2.00$2.50$6.667
Completeness50%0%100%67%0%
Billingmonthlyyearlypay firstyearlymonthly
Pay$129$84$50$2,244$20
Enough forabout 2,898 results a month50,000 results a year25,000 results40,000 results a month3,000 results a month
Freshnessunknownunknown1 month1 monthunknown
Who can get itanyone with an Ahrefs account, only workspace owners and admins create API keysanyone 13 or over with a Keywords Everywhere accountanyone who isn't a direct competitor of SE Rankinganyoneanyone

Every related keywords API provider we score, ranked

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-30.

  1. ahrefs.com/legal/terms
  2. ahrefs.com/pricing
  3. ahrefs.com/seo-api
  4. docs.ahrefs.com/
  5. docs.ahrefs.com/en/api/docs/introduction
  6. docs.ahrefs.com/en/api/docs/limits-consumption
  7. docs.ahrefs.com/en/api/reference/keywords-explorer/get-matching-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
  • Competition, not in the answer
  • Keyword difficulty
  • Search intent, not in the answer
Price
$ per 1,000 keywords$44.505
Perresult
Billingmonthly
$ a month$129
Charges
Start fee$0.00
Also pays forfrom the same budget: Domain rating · Backlinks stats · Batch analysis · Backlinks · Organic keywords · Overview · Related terms · SERP Overview
Overage
$ per 1,000 keywords$3.45
Not found
$ per 1,000$32.25
In their words
Their pitchVolume, difficulty, clickstream data, parent topics, keyword ideas for a single term or list.
Data
Keep dataUpon termination of your use of Ahrefs Services, any license rights granted to you under the Terms will terminate with immediate effect.
Use dataAhrefs grants you a limited, non-exclusive, non-transferable, non-sublicensable and revocable licence to access and use Ahrefs Services solely for the purposes of your internal business operations. [...] you shall not engage in any use of Ahrefs Services, Content or User Content in violation of intellectual property rights, including but not limited to: a) reproducing, duplicating, copying, selling, trading, transferring, assigning, publishing, or exploiting for any commercial purposes, any portion of Ahrefs Services, or use or access to Ahrefs Services or the computer code that powers Ahrefs Services, without our express written consent, [...] You agree that you will not [...] i) except through the software or search agents provided by Ahrefs Services, search, crawl, scrape or harvest data or information from Ahrefs Services through the use of any engine, software, tool, agent, device or mechanism, [...] l) use Ahrefs Services to develop a product or service which competes with us or any of our products and services
Plan
Pay$129
You get200,000 credits a month
Enough forabout 2,898 results a month
Rate limit
Per second1
The call
You sendcountry, select "keyword,cpc,cps,difficulty,first_seen,global_volume,intents,parent_topic,serp_features,serp_last_update,traffic_potential,volume,volume_desktop_pct,volume_mobile_pct,volume_monthly". Optional: where, order_by, limit, timeout, keyword_list_id, keywords, terms, match_mode
MethodGET
Path/v3/keywords-explorer/matching-terms
About the plan
PlanLite
Who can get itanyone with an Ahrefs account, only workspace owners and admins create API keys
The 15 fields the plan's answer can hold

keyword, cost per click, clicks per search, keyword difficulty, first seen, global search volume, search intents, parent topic, SERP features, SERP updated at, traffic potential, search volume, desktop volume percentage, mobile volume percentage, monthly search volume

Best GTM APIs