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SISTRIX: related keywords API pricing, 5 plans

SISTRIX's sitellms.txtBest related keywords API in 2026

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17% complete: 1 of the 6 key fields we checkSee the 6 fields
€419 monthlyWe rank 54 plans by price. 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: Professional one of SISTRIX's 5 plans
Call: GET /keyword.questions SISTRIX's only call for this API
API: Related keywords API one of SISTRIX's 4 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • 1 of the 6 key fields we check. Search volume.
  • A monthly subscription. You pay €419 a month.
  • One call. You send kw to GET /keyword.questions. You can also send country, lang, limit and page. The call returns keywords like the 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. sistrix.com/api/
  2. sistrix.com/api/exports-and-credits
  3. sistrix.com/api/keyword/keyword-questions/
  4. sistrix.com/api/limitations/
  5. sistrix.com/faq/how-does-the-credit-system-work-within-the-toolbox
  6. sistrix.com/pricing
  7. sistrix.com/support/profiles

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
Perresult
Billingmonthly
$ a month$471.50
Charges
Also pays forfrom the same budget: links.list · keyword.seo.metrics · keyword.domain.seo · links.overview · links.linktexts · keyword.seo · marketplace.product.price · domain.overview · domain.ideas · domain.kwcount.seo
Not found
$ per 1,000$0.00
In their words
Their pitchDisplays Google queries that contain the specified keyword together with common question words (such as what, where, when, how).
Data
Keep datano limit
Use dataThe data, functions, and results provided by the API may not be shared with third parties without explicit written authorization. [...] Any misuse of the API, including circumventing rate limits, testing for security vulnerabilities, or intentionally overloading the API, is strictly prohibited.
Plan
Pay€419
Rate limit
Per second5
Batch1
The call
You sendkw. Optional: country, lang, limit, page
MethodGET
Path/keyword.questions
About the plan
PlanProfessional
Who can get itthe company named on the invoice only, with a personal email address on the company's domain for each user, no free email services
The 3 fields the plan's answer can hold

question, amount, traffic

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