# Citable, pay as you go, Pay per call, GET /v1/keyword-ideas: Related keywords API

> Keyword research with the numbers attached: every result contains your seed, and arrives with search volume, CPC, difficulty and intent.

Citable's Pay per call plan for the related keywords API costs $0.50 per 1,000 keywords. Citable's docs list 5 of the 6 fields on our checklist: Search volume, Cost per click, Competition, Keyword difficulty, Search intent.
We haven't run Citable through [our related keywords API benchmark](https://datacircle.dev/best-related-keywords-api.txt) yet.
Half of the 226 plans we rank by price cost $0.596 per 1,000 keywords or less. This plan costs less per 1,000 keywords than 50% of the 226 plans.
[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.
[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.
[Bing Webmaster Tools](https://datacircle.dev/related-keywords-apis/bing-webmaster-tools/free/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 [Mangools](https://datacircle.dev/related-keywords-apis/mangools/15-monthly/llms.txt) are the best related keywords API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/related-keywords-apis/citable/pay-as-you-go-pay-per-call-get-v1-keyword-ideas
- [Related keywords API: the 9 best providers compared](https://datacircle.dev/best-related-keywords-api.txt)
- Get it: https://citable.run/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Request: `GET https://citable.run/v1/keyword-ideas`
- API key: not needed
- Its API docs: https://citable.run/docs/api/keyword-ideas?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Sold by: Citable (https://citable.run?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 83%
- Search volume: ✓
- Cost per click: ✓
- Competition: ✓
- Keyword difficulty: ✓
- Search intent: ✓

## Price

- $ per 1,000 keywords: $0.50
- Per: page of 100
- Billing: pay as you go

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Keyword research with the numbers attached: every result contains your seed, and arrives with search volume, CPC, difficulty and intent.

## Data

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

## Plan

- Pay: per call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: seed. Optional: limit, country, lang
- Method: GET
- Path: /v1/keyword-ideas

## About the plan

- Plan: Pay per call
- Who can get it: anyone, with no account or API key, paying each call in USDC from a Solana wallet over x402

## The 10 fields the plan's answer can hold

source keyword, keyword, search volume, cost per click, competition, keyword difficulty, search intent, total results, country code, language code

## Citable's plans (1)

- [Citable, pay as you go, Pay per call, GET /v1/keyword-ideas](https://datacircle.dev/related-keywords-apis/citable/pay-as-you-go-pay-per-call-get-v1-keyword-ideas/llms.txt): $0.50 per 1,000, 83% complete

## Citable's calls for this API (2)

- `GET /v1/keyword-ideas`: [Citable, pay as you go, Pay per call, GET /v1/keyword-ideas](https://datacircle.dev/related-keywords-apis/citable/pay-as-you-go-pay-per-call-get-v1-keyword-ideas/llms.txt)
- `GET /v1/keyword-research`: [Citable, pay as you go, Pay per call, GET /v1/keyword-research](https://datacircle.dev/related-keywords-apis/citable/pay-as-you-go-pay-per-call-get-v1-keyword-research/llms.txt)

## Citable's APIs (6)

- [Citable: domain authority API pricing, 1 plan](https://datacircle.dev/domain-authority-apis/citable/pay-as-you-go/llms.txt)
- [Citable: keyword research API pricing, 1 plan](https://datacircle.dev/keyword-research-apis/citable/pay-as-you-go/llms.txt)
- [Citable: ranked keywords API pricing, 1 plan](https://datacircle.dev/ranked-keywords-apis/citable/pay-as-you-go/llms.txt)
- [Citable: search autocomplete API pricing, 1 plan](https://datacircle.dev/search-autocomplete-apis/citable/pay-as-you-go/llms.txt)
- [Citable: related keywords API pricing, 1 plan, GET /v1/keyword-ideas](https://datacircle.dev/related-keywords-apis/citable/pay-as-you-go-pay-per-call-get-v1-keyword-ideas/llms.txt)
- [Citable: SERP API pricing, 1 plan, GET /v1/rank-check](https://datacircle.dev/serp-apis/citable/pay-as-you-go-pay-per-call-get-v1-rank-check/llms.txt)
- [Citable: SERP API pricing, 1 plan, GET /v1/serp](https://datacircle.dev/serp-apis/citable/pay-as-you-go-pay-per-call-get-v1-serp/llms.txt)

## Citable: related keywords API alternatives

- [Keyword Insights, $99 monthly](https://datacircle.dev/related-keywords-apis/keyword-insights/99-monthly/llms.txt): $0.495 per 1,000, 67% complete
- [Morningscore, $2,990 yearly](https://datacircle.dev/related-keywords-apis/morningscore/2990-yearly/llms.txt): $0.498 per 1,000, 50% complete
- [SocQ, top-up from $5, Starter, POST /v1/seo/keyword-suggestions](https://datacircle.dev/related-keywords-apis/socq/top-up-from-5-starter-post-v1-seo-keyword-suggestions/llms.txt): $0.50 per 1,000, 100% complete
- [Keywords Everywhere, $500 pack, 2,000,000 credits, POST /v1/get_pasf_keywords](https://datacircle.dev/related-keywords-apis/keywords-everywhere/500-pack-2000000-credits-post-v1-get-pasf-keywords/llms.txt): $0.50 per 1,000, 0% 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 2026-11-07.

- https://citable.run?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://citable.run/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://citable.run/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://citable.run/docs/api/keyword-ideas?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://citable.run/docs/paying?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://citable.run/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://citable.run/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing