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Moz pricing and alternatives: related keywords API

Moz's sitellms.txtBest related keywords API in 2026

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0% complete: none 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: Free one of Moz's 7 plans
Call: POST /jsonrpc Moz's only call for this API
API: Related keywords API one of Moz's 5 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • None of the 6 key fields we check: Search volume, Monthly trend, Cost per click, Competition and 2 more.
  • Nothing to pay. You get 50 credits a month, enough for 50 results. Calls stop once your credits run out.
  • One call. You call POST /jsonrpc with the inputs in Product details. The call returns keywords like the one you send.
  • Who can get it: anyone with a valid, non-expired credit card. Keep data: no limit. Use data: with conditions.

Moz: related keywords API alternatives

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

Moz, $500 monthlyDataForSEO, top-up from $50, Pay as you go, POST /v3/dataforseo_labs/google/related_keywords/liveAnyAPI, top-up from $10, Manual top-up, POST /v1/run/seo.related_keywordsKeywords Everywhere, $168 yearly, Silver, POST /v1/get_related_keywordsSpyFu, $119 monthly, Pro + AI, GET /apis/keyword_api/v2/related/getAlsoBuysAdsForKeywords
$ per 1,000 keywords$1.00$0.12$0.16$0.84$1.00
Completeness0%100%100%0%33%
Billingmonthlypay firstpay firstyearlymonthly
Pay$500$50$10$168$119
Enough for500,000 results a monthabout 416,666 results62,500 results200,000 results a year40,000 results a month
Freshnessunknown1 month1 monthunknown1 month
Who can get itanyoneanyone not in Russia, Belarus, Cuba, Iran, Syria, Myanmar, North Korea or Russian-occupied Ukraineanyone 18 or over, for business or professional use, not in an embargoed jurisdiction or on a restricted-party listanyone 13 or over with a Keywords Everywhere accountanyone

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 2026-10-29.

  1. moz.com/api
  2. moz.com/api-general-conditions
  3. moz.com/api/docs
  4. moz.com/api/docs/guides/error-handling
  5. moz.com/api/docs/guides/getting-started
  6. moz.com/api/docs/guides/rate-limiting
  7. moz.com/help/links-api/getting-started/legal
  8. moz.com/products/api/pricing

Product details

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

  • Search volume, not in the answer
  • 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
Perresult
Billingfree
Charges
Start fee$0.00
Also pays forfrom the same budget: URL Metrics · Links · Brand Authority · Link Intersect · Linking Root Domains · Link Status · Anchor Text · Final Redirect · Top Pages · Global Top Pages · Global Top Root Domains · Index Metadata · Usage Data · Keyword Metrics · Search Intent · Ranking Keywords
Overage
Units caphard
Not found
$ per 1,000$0.00
In their words
Their pitchYou can use the API to retrieve keyword metrics such as monthly search volume, research ranking opportunities or strengthen content briefs by generating related keywords [...]
Data
Keep datano limit
Use datause the Service to access the Data for Subscriber’s internal business purpose requiring analyzing URLs, (ii) display Data internally within its business, and (iii) display Data externally provided such display is done in accordance with Our attribution policy [...] Subscriber will not (nor will permit anyone else to) : (a) sell or otherwise charge anyone specifically or solely for the access or use of the Service except as permitted under the Agreement, (b) create any derivative works of the Service, (c) combine Data with constant factors [...], (d) copy, store, archive or extract Data in a manner not explicitly permitted herein, [...] (f) permit third parties to use the API key, [...] When displaying Moz API data (links, metrics, and anchor text), use our approved logo and link it to https://moz.com/. [...] You may not white-label our metrics. When you display data from Moz API, you must label it as originating from the Moz API.
Plan
Pay$0
You get50 credits a month
Enough for50 results a month
Rate limit
Per second0.1
Batch1
The call
You sendContent-Type header "application/json", jsonrpc "2.0", id, method "data.keyword.serp.related-keyword.list", params.data
MethodPOST
Path/jsonrpc
About the plan
PlanFree
Who can get itanyone with a valid, non-expired credit card
The only field the plan's answer can hold

keyword

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