# SEO Tester Online, contact us: Keyword research API > Leverage our search algorithms and filters to peer into new ranking opportunities and millions of data points about your keywords. SEO Tester Online's Enterprise plan lets you call the keyword research API. We check each provider's docs for 6 fields: Search volume, Monthly trend, Cost per click, Competition and 2 more. SEO Tester Online's docs list none of the 6. We haven't run SEO Tester Online through [our keyword research API benchmark](https://datacircle.dev/best-keyword-research-api.txt) yet. SEO Tester Online gives this plan's price on request. We rank 317 plans for keyword research APIs by price. Half the plans cost $2.127 or less per 1,000 keywords. [AppDrift's $14.99 monthly plan](https://datacircle.dev/keyword-research-apis/appdrift/14-99-monthly/llms.txt) costs the least per 1,000 keywords. AppDrift's keyword research API costs nothing beyond the plan price. [Pixel Tools's ₽99 pack](https://datacircle.dev/keyword-research-apis/pixel-tools/99-pack-guru-for-99-rubles-post-api-wordstatapi-wordstatapi/llms.txt) costs the least for 10,000 keywords a month: about $1.18. [seodata.dev's $4.99 monthly plan](https://datacircle.dev/keyword-research-apis/seodata-dev/4-99-monthly/llms.txt) covers any number of keywords. seodata.dev's $4.99 monthly plan costs less up front than AppDrift's $14.99 monthly plan. [DataForSEO](https://datacircle.dev/keyword-research-apis/dataforseo/top-up-from-50-pay-as-you-go-post-v3-dataforseo-labs-google-keyword-overview-live/llms.txt), [AppDrift](https://datacircle.dev/keyword-research-apis/appdrift/14-99-monthly/llms.txt) and [Bing Webmaster Tools](https://datacircle.dev/keyword-research-apis/bing-webmaster-tools/free-get-webmaster-api-svc-json-getkeywordstats/llms.txt) are the best keyword research API providers in the Datacircle benchmark. - This page: https://datacircle.dev/keyword-research-apis/seo-tester-online/contact-us - [Keyword research API: the best SEO keyword data providers](https://datacircle.dev/best-keyword-research-api.txt) - Get it: https://www.seotesteronline.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing - Request: Docs on request from sales - API key: with the plan, on https://www.seotesteronline.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing - Its API docs: https://www.seotesteronline.com/seo-api/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing - Sold by: SEO Tester Online (https://www.seotesteronline.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing) - Checked: 2026-11-09 ## In the answer - Completeness: 0% ## Price - Billing: contact ## In their words - Their pitch: Leverage our search algorithms and filters to peer into new ranking opportunities and millions of data points about your keywords. ## Data - Keep data: no limit - Use data: You are expressly prohibited from using the Services in the following ways or for each of the following purposes: [...] You must not, without our prior written consent, rent, release or sublicense, except as specifically stated in your subscription plan, (i) copy, distribute (including parts of our Services or our Website), modify, increase, translate, reproduce, sell, resell, sublicense, rent, rent, lease or any other attempt to exploit the Services or any other data contained in them, [...] (vi) provide the Website or the Services or any other usable part to third parties in the form of services or in the form of outsourcing or in any other form of commercial sharing, data processing or any other use of third party SEO products or services Online Tester. [...] All data associated with this API is the Company’s owner. ## The call - You send: Docs on request from sales ## About the plan - Plan: Enterprise - Who can get it: anyone 18 or over (13 or over with a parent or guardian's consent, by country), a human and not a bot, who gave truthful registration information ## The only field the plan's answer can hold keyword ## SEO Tester Online's plans (1) - [SEO Tester Online, contact us](https://datacircle.dev/keyword-research-apis/seo-tester-online/contact-us/llms.txt): 0% complete ## SEO Tester Online's calls (1) - Docs on request from sales: [SEO Tester Online, contact us](https://datacircle.dev/keyword-research-apis/seo-tester-online/contact-us/llms.txt) ## SEO Tester Online's APIs (3) - [SEO Tester Online: backlink API pricing, 1 plan](https://datacircle.dev/backlink-apis/seo-tester-online/contact-us/llms.txt) - [SEO Tester Online: domain authority API pricing, 1 plan](https://datacircle.dev/domain-authority-apis/seo-tester-online/contact-us/llms.txt) - [SEO Tester Online: keyword research API pricing, 1 plan](https://datacircle.dev/keyword-research-apis/seo-tester-online/contact-us/llms.txt) ## SEO Tester Online: keyword research API alternatives - [UnifAPI, contact us, Enterprise, POST /geo/keywords/search-volume](https://datacircle.dev/keyword-research-apis/unifapi/contact-us-enterprise-post-geo-keywords-search-volume/llms.txt): 0% complete - [VerifiedDR, contact us](https://datacircle.dev/keyword-research-apis/verifieddr/contact-us/llms.txt): 0% complete - [APIHZ, contact us](https://datacircle.dev/keyword-research-apis/apihz/contact-us/llms.txt): 0% complete - [Glimpse, contact us, API access, GET /v1/interest](https://datacircle.dev/keyword-research-apis/glimpse/contact-us-api-access-get-v1-interest/llms.txt): 0% complete ## Sources From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-09. - https://www.seotesteronline.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing - https://www.seotesteronline.com/seo-api/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing - https://www.seotesteronline.com/terms-conditions?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing