# JSON SEO, free: Related keywords API

> Списки популярных и похожих запросов из Яндекс Вордстата - материал для расширения семантики.

JSON SEO's First 100 requests free plan for the related keywords API costs $0.00 per 1,000 keywords. JSON SEO's docs list 1 of the 6 fields on our checklist: Search volume.
We haven't run JSON SEO through [our related keywords API benchmark](https://datacircle.dev/best-related-keywords-api.txt) yet.
This plan is free. We rank 226 plans for related keywords APIs by price. Half the plans cost $0.596 per 1,000 keywords or less. [See the best free related keywords API plan.](https://datacircle.dev/best-related-keywords-api.txt)
[Keys.so's ₽34,900 (about $417) monthly plan](https://datacircle.dev/related-keywords-apis/keys-so/34900-monthly/llms.txt) is the cheapest paid plan per 1,000 keywords. Keys.so's ₽34,900 (about $417) monthly plan charges nothing per call. You get as many keywords as Keys.so's rate limit allows. [AnyAPI's pay-as-you-go plan](https://datacircle.dev/related-keywords-apis/anyapi/pay-as-you-go-pay-per-call-with-x402-and-mpp-post-v1-run-seo-related-keywords/llms.txt) costs the least for 10,000 keywords a month: $1.60.
[seodata.dev's $4.99 monthly plan](https://datacircle.dev/related-keywords-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 Keys.so's ₽34,900 (about $417) monthly plan.
[DataForSEO](https://datacircle.dev/related-keywords-apis/dataforseo/top-up-from-50-pay-as-you-go-post-v3-dataforseo-labs-google-keyword-ideas-live/llms.txt), [Bing Webmaster Tools](https://datacircle.dev/related-keywords-apis/bing-webmaster-tools/free/llms.txt) and [Bukvarix](https://datacircle.dev/related-keywords-apis/bukvarix/free-without-registration-post-v1-mkeywords/llms.txt) are the best related keywords API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/related-keywords-apis/json-seo/free
- [Related keywords API: the best SEO keyword data providers](https://datacircle.dev/best-related-keywords-api.txt)
- Get it: https://jsonseo.ru/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Request: `GET https://jsonseo.ru/api/wordstat`
- API key: with the plan, on https://jsonseo.ru/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Its API docs: https://jsonseo.ru/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing#wordstat
- Sold by: JSON SEO (https://jsonseo.ru?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 17%
- Search volume: ✓

## Price

- $ per 1,000 keywords: $0.00
- Per: page, size not stated
- Billing: free

## Charges

- Also pays for: from the same budget: /yandex · /yandex/xml · /yandex/suggest · /yandex/images · /yandex/video · /google · /google/xml · /google/suggest · /google/images · /google/video · /bing · /bing/suggest · /bing/images · /bing/video · /wordstat/frequency · /wordstat/graph · /wordstat/map · /direct

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Списки популярных и похожих запросов из Яндекс Вордстата - материал для расширения семантики.

## Data

- Freshness: live
- Keep data: no limit
- Use data: "Пользователь использует Сервис и полученную информацию в соответствии с законодательством и с соблюдением прав третьих лиц." "Запрещается обходить технические ограничения Сервиса, превышать установленные лимиты частоты запросов, передавать API-токен третьим лицам, использовать Сервис для рассылки спама и иных противоправных действий." "Исполнитель предоставляет Пользователю [...] право использования Сервиса на условиях простой (неисключительной) лицензии без права предоставления сублицензий"

## Plan

- Pay: $0
- You get: 100 requests
- Enough for: 100 pages

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: text. Optional: kind, region, device
- Method: GET
- Path: /wordstat

## About the plan

- Plan: First 100 requests free
- Who can get it: anyone who signs up and confirms their email address

## The 3 fields the plan's answer can hold

seed keyword, keyword, search volume

## JSON SEO's plans (2)

- [JSON SEO, free](https://datacircle.dev/related-keywords-apis/json-seo/free/llms.txt): $0.00 per 1,000, 17% complete, live
- [JSON SEO, top-up](https://datacircle.dev/related-keywords-apis/json-seo/top-up/llms.txt): 17% complete, live

## JSON SEO's calls for this API (1)

- `GET /wordstat`: [JSON SEO, free](https://datacircle.dev/related-keywords-apis/json-seo/free/llms.txt)

## JSON SEO's APIs (6)

- [JSON SEO: image search API pricing, 2 plans, GET /bing/images](https://datacircle.dev/image-search-apis/json-seo/free-first-100-requests-free-get-bing-images/llms.txt)
- [JSON SEO: image search API pricing, 2 plans, GET /google/images](https://datacircle.dev/image-search-apis/json-seo/free-first-100-requests-free-get-google-images/llms.txt)
- [JSON SEO: image search API pricing, 2 plans, GET /yandex/images](https://datacircle.dev/image-search-apis/json-seo/free-first-100-requests-free-get-yandex-images/llms.txt)
- [JSON SEO: search autocomplete API pricing, 2 plans, GET /bing/suggest](https://datacircle.dev/search-autocomplete-apis/json-seo/free-first-100-requests-free-get-bing-suggest/llms.txt)
- [JSON SEO: search autocomplete API pricing, 2 plans, GET /google/suggest](https://datacircle.dev/search-autocomplete-apis/json-seo/free-first-100-requests-free-get-google-suggest/llms.txt)
- [JSON SEO: search autocomplete API pricing, 2 plans, GET /yandex/suggest](https://datacircle.dev/search-autocomplete-apis/json-seo/free-first-100-requests-free-get-yandex-suggest/llms.txt)
- [JSON SEO: video search API pricing, 2 plans, GET /bing/video](https://datacircle.dev/video-search-apis/json-seo/free-first-100-requests-free-get-bing-video/llms.txt)
- [JSON SEO: video search API pricing, 2 plans, GET /google/video](https://datacircle.dev/video-search-apis/json-seo/free-first-100-requests-free-get-google-video/llms.txt)
- [JSON SEO: video search API pricing, 2 plans, GET /yandex/video](https://datacircle.dev/video-search-apis/json-seo/free-first-100-requests-free-get-yandex-video/llms.txt)
- [JSON SEO: related keywords API pricing, 2 plans](https://datacircle.dev/related-keywords-apis/json-seo/free/llms.txt)
- [JSON SEO: SERP API pricing, 2 plans, GET /bing, /bing](https://datacircle.dev/serp-apis/json-seo/free-first-100-requests-free-get-bing-bing/llms.txt)
- [JSON SEO: SERP API pricing, 2 plans, GET /bing, /bing, full](https://datacircle.dev/serp-apis/json-seo/free-first-100-requests-free-get-bing-bing-full/llms.txt)
- [JSON SEO: SERP API pricing, 2 plans, GET /google, /google](https://datacircle.dev/serp-apis/json-seo/free-first-100-requests-free-get-google-google/llms.txt)
- [JSON SEO: SERP API pricing, 2 plans, GET /google, /google, full](https://datacircle.dev/serp-apis/json-seo/free-first-100-requests-free-get-google-google-full/llms.txt)
- [JSON SEO: SERP API pricing, 2 plans, GET /google/xml](https://datacircle.dev/serp-apis/json-seo/free-first-100-requests-free-get-google-xml/llms.txt)
- [JSON SEO: SERP API pricing, 2 plans, GET /yandex, /yandex](https://datacircle.dev/serp-apis/json-seo/free-first-100-requests-free-get-yandex-yandex/llms.txt)
- [JSON SEO: SERP API pricing, 2 plans, GET /yandex, /yandex, full](https://datacircle.dev/serp-apis/json-seo/free-first-100-requests-free-get-yandex-yandex-full/llms.txt)
- [JSON SEO: SERP API pricing, 2 plans, GET /yandex/xml](https://datacircle.dev/serp-apis/json-seo/free-first-100-requests-free-get-yandex-xml/llms.txt)
- [JSON SEO: keyword research API pricing, 2 plans, GET /wordstat/frequency](https://datacircle.dev/keyword-research-apis/json-seo/free-first-100-requests-free-get-wordstat-frequency/llms.txt)
- [JSON SEO: keyword research API pricing, 2 plans, GET /wordstat/graph](https://datacircle.dev/keyword-research-apis/json-seo/free-first-100-requests-free-get-wordstat-graph/llms.txt)

## JSON SEO: related keywords API alternatives

- [DataForSEO, free, $1 trial credit, POST /v3/keywords_data/bing/keywords_for_keywords/live](https://datacircle.dev/related-keywords-apis/dataforseo/free-1-trial-credit-post-v3-keywords-data-bing-keywords-for-keywords-live/llms.txt): $0.00 per 1,000, 67% complete, live
- [Omkar Cloud, free](https://datacircle.dev/related-keywords-apis/omkar-cloud/free/llms.txt): $0.00 per 1,000, 67% complete, live
- [kwrds.ai, free](https://datacircle.dev/related-keywords-apis/kwrds-ai/free/llms.txt): $0.00 per 1,000, 67% complete, live
- [QuanticData, free](https://datacircle.dev/related-keywords-apis/quanticdata/free/llms.txt): $0.00 per 1,000, 0% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-07.

- https://jsonseo.ru?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://jsonseo.ru/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://jsonseo.ru/offer?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://jsonseo.ru/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://jsonseo.ru/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing