# APIHZ, free: Related keywords API

> 查询百度搜索指定搜索内容的相关搜索内容。即百度搜索结果页最下方的相关搜索内容。

APIHZ's Registered user plan for the related keywords API costs $0.00 per 1,000 keywords. We check each provider's docs for 6 fields: Search volume, Monthly trend, Cost per click, Competition and 2 more. APIHZ's docs list none of the 6.
You get as many results as you like.
We haven't run APIHZ 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 or less per 1,000 keywords. [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/apihz/free
- [Related keywords API: the best SEO keyword data providers](https://datacircle.dev/best-related-keywords-api.txt)
- Get it: https://www.apihz.cn/template/miuu/faqadmin.php?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Request: `GET https://cn.apihz.cn/api/wangzhan/soubaiduxg.php`
- API key: with the plan, on https://www.apihz.cn/template/miuu/faqadmin.php?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Its API docs: https://www.apihz.cn/api/wangzhansoubaiduxg.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Sold by: APIHZ (https://www.apihz.cn?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 0%

## Price

- $ per 1,000 keywords: $0.00
- Per: result
- Billing: free

## Charges

- Also pays for: 438 other calls

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: 查询百度搜索指定搜索内容的相关搜索内容。即百度搜索结果页最下方的相关搜索内容。

## Data

- Freshness: 7 days
- Keep data: no limit
- Use data: 接口盒子提供的所有服务不得用于任何违法行为。接口盒子提供的信息，使用者应当自行判断准确性，适用性。使用者所造成的一切后果责任，损失等，由使用者自行承担。使用者产品所需资质应由使用者自身办理，接口盒子仅提供接口技术，不对使用者产品所需资质负责。从使用接口盒子的服务起默认遵守此协议。

## Plan

- Pay: CNY 0
- Enough for: no limit

## Rate limit

- Per second: 0.17
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: words. Optional: tn, ck
- Method: GET
- Path: /api/wangzhan/soubaiduxg.php

## About the plan

- Plan: Registered user
- Who can get it: anyone with a registered account

## The only field the plan's answer can hold

keyword

## APIHZ's plans (2)

- [APIHZ, free](https://datacircle.dev/related-keywords-apis/apihz/free/llms.txt): $0.00 per 1,000, 0% complete, 7 days
- [APIHZ, contact us](https://datacircle.dev/related-keywords-apis/apihz/contact-us/llms.txt): 0% complete, 7 days

## APIHZ's calls for this API (1)

- `GET /api/wangzhan/soubaiduxg.php`: [APIHZ, free](https://datacircle.dev/related-keywords-apis/apihz/free/llms.txt)

## APIHZ's APIs (11)

- [APIHZ: domain authority API pricing, 2 plans, GET /api/wangzhan/aizhanqz.php](https://datacircle.dev/domain-authority-apis/apihz/free-registered-user-get-api-wangzhan-aizhanqz-php/llms.txt)
- [APIHZ: domain authority API pricing, 2 plans, GET /api/wangzhan/seo1.php](https://datacircle.dev/domain-authority-apis/apihz/free-registered-user-get-api-wangzhan-seo1-php/llms.txt)
- [APIHZ: web scraping API pricing, 1 plan](https://datacircle.dev/web-scraping-apis/apihz/free/llms.txt)
- [APIHZ: web search API pricing, 2 plans](https://datacircle.dev/web-search-apis/apihz/free/llms.txt)
- [APIHZ: image search API pricing, 2 plans, GET /api/img/apihzimgbaidu.php](https://datacircle.dev/image-search-apis/apihz/free-registered-user-get-api-img-apihzimgbaidu-php/llms.txt)
- [APIHZ: image search API pricing, 2 plans, GET /api/img/apihzimgsougou.php](https://datacircle.dev/image-search-apis/apihz/free-registered-user-get-api-img-apihzimgsougou-php/llms.txt)
- [APIHZ: keyword research API pricing, 2 plans](https://datacircle.dev/keyword-research-apis/apihz/free/llms.txt)
- [APIHZ: related keywords API pricing, 2 plans](https://datacircle.dev/related-keywords-apis/apihz/free/llms.txt)
- [APIHZ: search autocomplete API pricing, 2 plans](https://datacircle.dev/search-autocomplete-apis/apihz/free/llms.txt)
- [APIHZ: SERP API pricing, 2 plans](https://datacircle.dev/serp-apis/apihz/free/llms.txt)
- [APIHZ: domain WHOIS API pricing, 1 plan, GET /api/wangzhan/whois.php](https://datacircle.dev/domain-whois-apis/apihz/free-registered-user-get-api-wangzhan-whois-php/llms.txt)
- [APIHZ: domain WHOIS API pricing, 1 plan, GET /api/wangzhan/whoisall.php](https://datacircle.dev/domain-whois-apis/apihz/free-registered-user-get-api-wangzhan-whoisall-php/llms.txt)
- [APIHZ: domain WHOIS API pricing, 1 plan, GET /api/wangzhan/whoisrdap.php](https://datacircle.dev/domain-whois-apis/apihz/free-registered-user-get-api-wangzhan-whoisrdap-php/llms.txt)
- [APIHZ: phone validation API pricing, 1 plan, GET /api/other/phonezt.php](https://datacircle.dev/validate-phone-apis/apihz/top-up-mengdian-credit-top-up-get-api-other-phonezt-php/llms.txt)
- [APIHZ: phone validation API pricing, 1 plan, GET /api/other/phonezts.php](https://datacircle.dev/validate-phone-apis/apihz/top-up-mengdian-credit-top-up-get-api-other-phonezts-php/llms.txt)
- [APIHZ: phone validation API pricing, 1 plan, GET /api/other/phoneztss.php](https://datacircle.dev/validate-phone-apis/apihz/top-up-mengdian-credit-top-up-get-api-other-phoneztss-php/llms.txt)
- [APIHZ: business verification API pricing, 1 plan, GET /api/shiming/qiye.php](https://datacircle.dev/business-verification-apis/apihz/top-up-mengdian-credit-top-up-get-api-shiming-qiye-php/llms.txt)
- [APIHZ: business verification API pricing, 1 plan, GET /api/shiming/qyinfo.php](https://datacircle.dev/business-verification-apis/apihz/top-up-mengdian-credit-top-up-get-api-shiming-qyinfo-php/llms.txt)

## APIHZ: 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
- [JSON SEO, free](https://datacircle.dev/related-keywords-apis/json-seo/free/llms.txt): $0.00 per 1,000, 17% 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 2026-11-08.

- https://www.apihz.cn?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://www.apihz.cn/api/wangzhansoubaidu.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://www.apihz.cn/api/wangzhansoubaiduxg.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://www.apihz.cn/template/miuu/faqadmin.php?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing