# Chinaz, free, 100次, GET /single/index/so: Keyword research API

> 根据关键词返回360PC指数（数据来源：index.chinaz.com 最近七天平均指数）

Chinaz's keyword research API on its 100次 plan. It costs $0.00 per 1,000 keywords. It returns 1 of the 6 key fields we check: Monthly trend.
We haven't run Chinaz through [our keyword research API benchmark](https://datacircle.dev/best-keyword-research-api.txt) yet.
This plan is free. We rank 130 plans for keyword research APIs by price. Half the plans cost $1.797 per 1,000 keywords or less.
[Mangools's $15 monthly plan](https://datacircle.dev/keyword-research-apis/mangools/15-monthly/llms.txt) is the cheapest paid plan per 1,000 keywords: as little as $0.0001. Mangools's $15 monthly plan covers up to 5,000,000 keywords a day.
[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), [Bing Webmaster Tools](https://datacircle.dev/keyword-research-apis/bing-webmaster-tools/free-get-webmaster-api-svc-json-getkeywordstats/llms.txt) and [Mangools](https://datacircle.dev/keyword-research-apis/mangools/15-monthly/llms.txt) are the best keyword research API providers in our benchmark.

- This page: https://datacircle.dev/keyword-research-apis/chinaz/free-100-get-single-index-so
- [Keyword research API: 4 providers compared on price and data](https://datacircle.dev/best-keyword-research-api.txt)
- Get it: https://api.chinaz.com/home/browseapi?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing
- Request: `GET https://apidatav2.chinaz.com/single/index/so`
- API key: with the plan, on https://api.chinaz.com/home/browseapi?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing
- Its API docs: https://api.chinaz.com/ApiDetails/SoIndex?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing
- Sold by: Chinaz (https://api.chinaz.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing)
- Checked: 2026-11-04

## In the answer

- Completeness: 17%
- Monthly trend: ✓

## Price

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

## Charges

- Also pays for: from the same budget: 360 index, batch

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: 根据关键词返回360PC指数（数据来源：index.chinaz.com 最近七天平均指数）

## Data

- Keep data: no limit
- Use data: 除非法律允许或者经公司事先书面许可，你使用“站长之家”账号及相关服务不得具有下列行为： [...] 3.1.3 利用“站长之家”账号和相关服务，通过非正常使用手段增加公司服务器负担或影响公司的商业利益的行为 ，包括但不限于：（1）采集行为；（2）模拟点击行为；（3）转让API接口数据提供给第三方使用行为；（4）超出正常使用的请求、明显无意义的请求行为； [...] 4.2 经公司书面许可后，任何用户、第三方对 “站长之家”账号及相关服务的信息内容的分享、转发等行为，还应符合以下规范： [...] （4）不得把相关数据内容用于公司书面许可范围之外的目的，进行任何形式的销售和商业使用，或向第三方泄露、提供或允许第三方为任何方式的使用

## Plan

- Pay: CNY 0
- You get: 100 requests
- Enough for: 100 calls

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: keyword
- Method: GET
- Path: /single/index/so

## About the plan

- Plan: 100次
- Who can get it: anyone

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

search volume trend, start date, end date

## Chinaz's plans (5)

- [Chinaz, free, 100次, GET /single/index/so](https://datacircle.dev/keyword-research-apis/chinaz/free-100-get-single-index-so/llms.txt): $0.00 per 1,000, 17% complete
- [Chinaz, CNY 300 pack, 10000次, GET /single/index/baidu](https://datacircle.dev/keyword-research-apis/chinaz/cny-300-pack-10000-get-single-index-baidu/llms.txt): $4.487 per 1,000, 17% complete
- [Chinaz, CNY 400 pack, 80000次, GET /single/index/so](https://datacircle.dev/keyword-research-apis/chinaz/cny-400-pack-80000-get-single-index-so/llms.txt): $0.748 per 1,000, 17% complete
- [Chinaz, CNY 750 pack, 30000次, GET /single/index/baidu](https://datacircle.dev/keyword-research-apis/chinaz/cny-750-pack-30000-get-single-index-baidu/llms.txt): $3.739 per 1,000, 17% complete
- [Chinaz, CNY 800 pack, 200000次, GET /single/index/so](https://datacircle.dev/keyword-research-apis/chinaz/cny-800-pack-200000-get-single-index-so/llms.txt): $0.598 per 1,000, 17% complete

## Chinaz's calls for this API (4)

- `GET /single/index/so`: [Chinaz, free, 100次, GET /single/index/so](https://datacircle.dev/keyword-research-apis/chinaz/free-100-get-single-index-so/llms.txt)
- `POST /batch/index/so`: [Chinaz, free, 100次, POST /batch/index/so](https://datacircle.dev/keyword-research-apis/chinaz/free-100-post-batch-index-so/llms.txt)
- `GET /single/index/baidu`: [Chinaz, free, 100次, GET /single/index/baidu](https://datacircle.dev/keyword-research-apis/chinaz/free-100-get-single-index-baidu/llms.txt)
- `POST /batch/index/baidu`: [Chinaz, free, 100次, POST /batch/index/baidu](https://datacircle.dev/keyword-research-apis/chinaz/free-100-post-batch-index-baidu/llms.txt)

## Chinaz's APIs (5)

- [Chinaz: SERP API pricing, 7 plans, GET /single/sopc/keywordtop50](https://datacircle.dev/serp-apis/chinaz/free-100-get-single-sopc-keywordtop50/llms.txt)
- [Chinaz: SERP API pricing, 7 plans, GET /single/baidumobile/keywordtop50](https://datacircle.dev/serp-apis/chinaz/free-100-get-single-baidumobile-keywordtop50/llms.txt)
- [Chinaz: SERP API pricing, 7 plans, GET /single/baidupc/keywordtop50](https://datacircle.dev/serp-apis/chinaz/free-100-get-single-baidupc-keywordtop50/llms.txt)
- [Chinaz: keyword research API pricing, 5 plans, GET /single/index/so](https://datacircle.dev/keyword-research-apis/chinaz/free-100-get-single-index-so/llms.txt)
- [Chinaz: domain authority API pricing, 13 plans, GET /single/weight/somobile](https://datacircle.dev/domain-authority-apis/chinaz/free-100-get-single-weight-somobile/llms.txt)
- [Chinaz: domain authority API pricing, 13 plans, POST /batch/weight/somobile](https://datacircle.dev/domain-authority-apis/chinaz/free-100-post-batch-weight-somobile/llms.txt)
- [Chinaz: domain authority API pricing, 13 plans, GET /single/weight/sopc](https://datacircle.dev/domain-authority-apis/chinaz/free-100-get-single-weight-sopc/llms.txt)
- [Chinaz: domain authority API pricing, 13 plans, POST /batch/weight/sopc](https://datacircle.dev/domain-authority-apis/chinaz/free-100-post-batch-weight-sopc/llms.txt)
- [Chinaz: domain authority API pricing, 13 plans, GET /single/weight/baidumobile](https://datacircle.dev/domain-authority-apis/chinaz/free-100-get-single-weight-baidumobile/llms.txt)
- [Chinaz: domain authority API pricing, 13 plans, POST /batch/weight/baidumobile](https://datacircle.dev/domain-authority-apis/chinaz/free-100-post-batch-weight-baidumobile/llms.txt)
- [Chinaz: domain authority API pricing, 13 plans, GET /single/weight/baidupc](https://datacircle.dev/domain-authority-apis/chinaz/free-100-get-single-weight-baidupc/llms.txt)
- [Chinaz: domain authority API pricing, 13 plans, POST /batch/weight/baidupc](https://datacircle.dev/domain-authority-apis/chinaz/free-100-post-batch-weight-baidupc/llms.txt)
- [Chinaz: domain authority API pricing, 13 plans, GET /single/weight/all](https://datacircle.dev/domain-authority-apis/chinaz/free-100-get-single-weight-all/llms.txt)
- [Chinaz: domain authority API pricing, 13 plans, POST /batch/weight/all](https://datacircle.dev/domain-authority-apis/chinaz/free-100-post-batch-weight-all/llms.txt)
- [Chinaz: domain authority API pricing, 13 plans, GET /single/weight/sm](https://datacircle.dev/domain-authority-apis/chinaz/free-100-get-single-weight-sm/llms.txt)
- [Chinaz: domain authority API pricing, 13 plans, POST /batch/weight/sm](https://datacircle.dev/domain-authority-apis/chinaz/free-100-post-batch-weight-sm/llms.txt)
- [Chinaz: domain authority API pricing, 13 plans, GET /single/weight/sogoupc](https://datacircle.dev/domain-authority-apis/chinaz/free-100-get-single-weight-sogoupc/llms.txt)
- [Chinaz: domain authority API pricing, 13 plans, POST /batch/weight/sogoupc](https://datacircle.dev/domain-authority-apis/chinaz/free-100-post-batch-weight-sogoupc/llms.txt)
- [Chinaz: business verification API pricing, 6 plans](https://datacircle.dev/business-verification-apis/chinaz/cny-100-pack-100-1000/llms.txt)
- [Chinaz: company enrichment API pricing, 2 plans](https://datacircle.dev/company-enrichment-apis/chinaz/cny-160-pack/llms.txt)

## Chinaz: keyword research API alternatives

- [Rush Analytics, $49 monthly, Pro, POST /create/wordstat](https://datacircle.dev/keyword-research-apis/rush-analytics/49-monthly-pro-post-create-wordstat/llms.txt): $0.42 per 1,000, 17% complete, live
- [Omkar Cloud, $48 monthly, Grow Plan, GET /keywords/volume](https://datacircle.dev/keyword-research-apis/omkar-cloud/48-monthly-grow-plan-get-keywords-volume/llms.txt): $0.48 per 1,000, 67% complete, live
- [Ahrefs, $129 monthly, Lite, GET /v3/keywords-explorer/overview, Overview](https://datacircle.dev/keyword-research-apis/ahrefs/129-monthly-lite-get-v3-keywords-explorer-overview-overview/llms.txt): $0.645 per 1,000, 50% complete
- [SocQ, top-up from $5, Starter, POST /v1/seo/keyword-overview](https://datacircle.dev/keyword-research-apis/socq/top-up-from-5-starter-post-v1-seo-keyword-overview/llms.txt): $0.75 per 1,000, 100% 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 2026-11-04.

- https://api.chinaz.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing
- https://api.chinaz.com/ApiDetails/SoIndex?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing
- https://api.chinaz.com/home/browseapi?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing
- https://api.chinaz.com/home/usehelp?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing
- https://www.chinaz.com/aboutus/agreement.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing