# Aizhan, free: Related keywords API

> 获取百度推荐相关关键词/长尾关键词

Aizhan's related keywords API on its Free trial plan. It costs $0.00 per 1,000 keywords. It returns none of the 6 key fields we check: Search volume, Monthly trend, Cost per click, Competition and 2 more.
Aizhan limits how many pages you get but gives no number.
We haven't run Aizhan through [our related keywords API benchmark](https://datacircle.dev/best-related-keywords-api.txt) yet.
This plan is free. We rank 143 plans for related keywords APIs by price. Half the plans cost $0.486 per 1,000 keywords or less.
[XMLRiver's ₽15,000 monthly plan](https://datacircle.dev/related-keywords-apis/xmlriver/15000-monthly/llms.txt) is the cheapest paid plan per 1,000 keywords: $0.00009. XMLRiver charges for each page of results. We count 2,000 keywords on each page to get the $0.00009 price.
[Mangools](https://datacircle.dev/related-keywords-apis/mangools/15-monthly/llms.txt), [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) and [AnyAPI](https://datacircle.dev/related-keywords-apis/anyapi/top-up-from-10-manual-top-up-post-v1-run-seo-related-keywords/llms.txt) are the best related keywords API providers in our benchmark.

- This page: https://datacircle.dev/related-keywords-apis/aizhan/free
- [Related keywords API: 4 providers compared on price and data](https://datacircle.dev/best-related-keywords-api.txt)
- Get it: https://apistore.aizhan.com/detail/11/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Request: `GET https://apistore.aizhan.com/word/related/{key}`
- API key: with the plan, on https://apistore.aizhan.com/detail/11/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Its API docs: https://apistore.aizhan.com/detail/11/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Sold by: Aizhan (https://apistore.aizhan.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing)
- Checked: 2026-11-04

## In the answer

- Completeness: 0%

## Price

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

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: 获取百度推荐相关关键词/长尾关键词

## Data

- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: CNY 0

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: word. Optional: page
- Method: GET
- Path: /word/related/{key}

## About the plan

- Plan: Free trial
- Who can get it: anyone

## The 5 fields the plan's answer can hold

seed keyword, keyword, keyword index, PC keyword index, mobile keyword index

## Aizhan's plans (3)

- [Aizhan, free](https://datacircle.dev/related-keywords-apis/aizhan/free/llms.txt): $0.00 per 1,000, 0% complete
- [Aizhan, top-up](https://datacircle.dev/related-keywords-apis/aizhan/top-up/llms.txt): 0% complete
- [Aizhan, CNY 1,750 pack](https://datacircle.dev/related-keywords-apis/aizhan/cny-1750-pack/llms.txt): 0% complete

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

- `GET /word/related/{key}`: [Aizhan, free](https://datacircle.dev/related-keywords-apis/aizhan/free/llms.txt)

## Aizhan's APIs (6)

- [Aizhan: domain authority API pricing, 3 plans, GET /sorank/siteinfos/{key}](https://datacircle.dev/domain-authority-apis/aizhan/free-trial-get-sorank-siteinfos-key/llms.txt)
- [Aizhan: domain authority API pricing, 3 plans, GET /sogourank/siteinfos/{key}](https://datacircle.dev/domain-authority-apis/aizhan/free-trial-get-sogourank-siteinfos-key/llms.txt)
- [Aizhan: domain authority API pricing, 3 plans, GET /toutiaorank/siteinfos/{key}](https://datacircle.dev/domain-authority-apis/aizhan/free-trial-get-toutiaorank-siteinfos-key/llms.txt)
- [Aizhan: keyword research API pricing, 4 plans, GET /so/index/{key}](https://datacircle.dev/keyword-research-apis/aizhan/free-trial-get-so-index-key/llms.txt)
- [Aizhan: keyword research API pricing, 4 plans, GET /baidu/index/{key}](https://datacircle.dev/keyword-research-apis/aizhan/free-trial-get-baidu-index-key/llms.txt)
- [Aizhan: keyword research API pricing, 4 plans, GET /wechat/index/{key}](https://datacircle.dev/keyword-research-apis/aizhan/free-trial-get-wechat-index-key/llms.txt)
- [Aizhan: backlink API pricing, 3 plans](https://datacircle.dev/backlink-apis/aizhan/free/llms.txt)
- [Aizhan: related keywords API pricing, 3 plans](https://datacircle.dev/related-keywords-apis/aizhan/free/llms.txt)
- [Aizhan: SERP API pricing, 4 plans, GET /googlerank/addtasks/{key}](https://datacircle.dev/serp-apis/aizhan/free-trial-get-googlerank-addtasks-key/llms.txt)
- [Aizhan: SERP API pricing, 4 plans, GET /baidurank/mobileaddtasks/{key}](https://datacircle.dev/serp-apis/aizhan/free-trial-get-baidurank-mobileaddtasks-key/llms.txt)
- [Aizhan: SERP API pricing, 4 plans, GET /baidurank/pcaddtasks/{key}](https://datacircle.dev/serp-apis/aizhan/free-trial-get-baidurank-pcaddtasks-key/llms.txt)
- [Aizhan: ranked keywords API pricing, 4 plans, GET /smrank/mobileexport/{key}](https://datacircle.dev/ranked-keywords-apis/aizhan/free-trial-get-smrank-mobileexport-key/llms.txt)
- [Aizhan: ranked keywords API pricing, 4 plans, GET /toutiaorank/mobileexport/{key}](https://datacircle.dev/ranked-keywords-apis/aizhan/free-trial-get-toutiaorank-mobileexport-key/llms.txt)
- [Aizhan: ranked keywords API pricing, 4 plans, GET /sorank/mobileexport/{key}](https://datacircle.dev/ranked-keywords-apis/aizhan/free-trial-get-sorank-mobileexport-key/llms.txt)
- [Aizhan: ranked keywords API pricing, 4 plans, GET /sorank/pcexport/{key}](https://datacircle.dev/ranked-keywords-apis/aizhan/free-trial-get-sorank-pcexport-key/llms.txt)
- [Aizhan: ranked keywords API pricing, 4 plans, GET /baidurank/mobileemulation/{key}](https://datacircle.dev/ranked-keywords-apis/aizhan/free-trial-get-baidurank-mobileemulation-key/llms.txt)
- [Aizhan: ranked keywords API pricing, 4 plans, GET /baidurank/mobileexport/{key}](https://datacircle.dev/ranked-keywords-apis/aizhan/free-trial-get-baidurank-mobileexport-key/llms.txt)
- [Aizhan: ranked keywords API pricing, 4 plans, GET /baidurank/pcemulation/{key}](https://datacircle.dev/ranked-keywords-apis/aizhan/free-trial-get-baidurank-pcemulation-key/llms.txt)
- [Aizhan: ranked keywords API pricing, 4 plans, GET /baidurank/pcexport/{key}](https://datacircle.dev/ranked-keywords-apis/aizhan/free-trial-get-baidurank-pcexport-key/llms.txt)
- [Aizhan: ranked keywords API pricing, 4 plans, GET /sogourank/mobileexport/{key}](https://datacircle.dev/ranked-keywords-apis/aizhan/free-trial-get-sogourank-mobileexport-key/llms.txt)
- [Aizhan: ranked keywords API pricing, 4 plans, GET /sogourank/pcexport/{key}](https://datacircle.dev/ranked-keywords-apis/aizhan/free-trial-get-sogourank-pcexport-key/llms.txt)

## Aizhan: related keywords API alternatives

- [Mangools, free](https://datacircle.dev/related-keywords-apis/mangools/free/llms.txt): $0.00 per 1,000, 83% complete
- [DataForSEO, free, $1 trial credit, POST /v3/dataforseo_labs/google/keyword_ideas/live](https://datacircle.dev/related-keywords-apis/dataforseo/free-1-trial-credit-post-v3-dataforseo-labs-google-keyword-ideas-live/llms.txt): $0.00 per 1,000, 100% complete, 1 month
- [AnyAPI, free trial key, POST /v1/run/seo.related_keywords](https://datacircle.dev/related-keywords-apis/anyapi/free-trial-key-post-v1-run-seo-related-keywords/llms.txt): $0.00 per 1,000, 100% complete, 1 month
- [SE Ranking, free trial, GET /v1/keywords/questions](https://datacircle.dev/related-keywords-apis/se-ranking/free-trial-get-v1-keywords-questions/llms.txt): $0.00 per 1,000, 100% complete, 1 month

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-04.

- https://apistore.aizhan.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://apistore.aizhan.com/detail/11/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://apistore.aizhan.com/list/c0-1/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://apistore.aizhan.com/list/c0-2/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing