# 12backlinks, contact us: Keyword research API

> Measure how many referring domains the pages ranking on Google page 1 have, for each keyword in a market: median and q25 to q75 range of the top 10, compared with positions 11 to 30, with a significance test.

12backlinks's Credits 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. 12backlinks's docs list none of the 6.
We haven't run 12backlinks through [our keyword research API benchmark](https://datacircle.dev/best-keyword-research-api.txt) yet.
12backlinks gives this plan's price on request. We rank 331 plans for keyword research APIs by price. Half the plans cost $2.388 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/12backlinks/contact-us
- [Keyword research API: the best SEO keyword data providers](https://datacircle.dev/best-keyword-research-api.txt)
- Get it: https://12backlinks.com/developers?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing
- Request: `POST https://12backlinks.com/api/v1/batches`
- API key: with the plan, on https://12backlinks.com/developers?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing
- Its API docs: https://12backlinks.com/developers?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing
- Sold by: 12backlinks (https://12backlinks.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing)
- Checked: 2026-11-10

## In the answer

- Completeness: 0%

## Price

- Per: result
- Billing: contact

## Charges

- Repeat free: never
- Also pays for: from the same budget: launch_link_gap

## In their words

- Their pitch: Measure how many referring domains the pages ranking on Google page 1 have, for each keyword in a market: median and q25 to q75 range of the top 10, compared with positions 11 to 30, with a significance test.

## Data

- Freshness: 7 days
- Keep data: no API terms
- Use data: no API terms

## Rate limit

- Concurrent: 1
- Batch: 100

## Speed

- Answer: in the call or by polling

## The call

- You send: items[].keyword. Optional: items[].domain, items[].lang, domain, lang, name, wait, idempotency_key
- Method: POST
- Path: /api/v1/batches

## About the plan

- Plan: Credits
- Who can get it: anyone

## The 26 fields the plan's answer can hold

batch ID, analysis ID, status, keyword, Google domain, language, median referring domains of top 10 pages, 25th percentile referring domains of top 10 pages, 75th percentile referring domains of top 10 pages, median referring domains of pages in positions 11 to 30, top 10 gap significant, top 10 gap p-value, top 10 pages measured, top 10 pages, top 10 measure insufficient, median referring domains of top 10 domains, 25th percentile referring domains of top 10 domains, 75th percentile referring domains of top 10 domains, median referring domains of domains in positions 11 to 30, top 10 domain gap significant, top 10 domain gap p-value, top 10 domains measured, top 10 domains, top 10 domain measure insufficient, SERP results, amount charged

## 12backlinks's plans (1)

- [12backlinks, contact us](https://datacircle.dev/keyword-research-apis/12backlinks/contact-us/llms.txt): 0% complete, 7 days

## 12backlinks's calls for this API (1)

- `POST /api/v1/batches`: [12backlinks, contact us](https://datacircle.dev/keyword-research-apis/12backlinks/contact-us/llms.txt)

## 12backlinks's APIs (2)

- [12backlinks: backlink API pricing, 1 plan](https://datacircle.dev/backlink-apis/12backlinks/contact-us/llms.txt)
- [12backlinks: keyword research API pricing, 1 plan](https://datacircle.dev/keyword-research-apis/12backlinks/contact-us/llms.txt)

## 12backlinks: keyword research API alternatives

- [DataForSEO, contact us, Custom pricing quote, POST /v3/keywords_data/bing/search_volume/live](https://datacircle.dev/keyword-research-apis/dataforseo/contact-us-custom-pricing-quote-post-v3-keywords-data-bing-search-volume-live/llms.txt): 67% complete, live
- [kwrds.ai, contact us, Higher limits or enterprise solutions, POST /keywords-with-volumes](https://datacircle.dev/keyword-research-apis/kwrds-ai/contact-us-higher-limits-or-enterprise-solutions-post-keywords-with-volumes/llms.txt): 83% complete, live
- [AIsa, contact us, Enterprise, POST /apis/v1/dataforseo/keywords_data/google_ads/search_volume/live](https://datacircle.dev/keyword-research-apis/aisa/contact-us-enterprise-post-apis-v1-dataforseo-keywords-data-google-ads-search-volume-live/llms.txt): 67% complete, live
- [Exploding Topics, contact us, More than 25,000 requests per month, or commercial use, GET /database-search](https://datacircle.dev/keyword-research-apis/exploding-topics/contact-us-more-than-25000-requests-per-month-or-commercial-use-get-database-search/llms.txt): 33% complete, 24 hours

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-10.

- https://12backlinks.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing
- https://12backlinks.com/api/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing
- https://12backlinks.com/developers?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing
- https://12backlinks.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=keyword-research-api-pricing