# Google Ads API, free, Standard: Related keywords API

> Using the KeywordPlanIdeaService, you can discover keyword suggestions that are relevant to your Google Search campaign, or retrieve historical metrics for an existing list of keywords.

Google Ads API's Standard plan for the related keywords API costs $0.00 per 1,000 keywords. Google Ads API's docs list 4 of the 6 fields on our checklist: Search volume, Monthly trend, Cost per click, Competition.
You get as many pages as you like.
We haven't run Google Ads API through [our related keywords API benchmark](https://datacircle.dev/best-related-keywords-api.txt) yet.
We rank 226 plans for related keywords APIs by price. Half the plans cost $0.596 or less per 1,000 keywords. This plan and 4 others tie for the lowest price per 1,000 keywords of the 226 plans. [See the best free related keywords API plan.](https://datacircle.dev/best-related-keywords-api.txt)
[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/google-ads-api/free-standard
- [Related keywords API: the best SEO keyword data providers](https://datacircle.dev/best-related-keywords-api.txt)
- Get it: https://developers.google.com/google-ads/api/docs/productionize/access-levels?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Request: `POST https://googleads.googleapis.com/v26/customers/{customer_id}:generateKeywordIdeas`
- API key: with the plan, on https://developers.google.com/google-ads/api/docs/productionize/access-levels?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Its API docs: https://developers.google.com/google-ads/api/docs/keyword-planning/generate-keyword-ideas?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Sold by: Google Ads API (https://developers.google.com/google-ads/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 67%
- Search volume: ✓
- Monthly trend: ✓
- Cost per click: ✓
- Competition: ✓

## Price

- $ per 1,000 keywords: $0.00
- Per: page of 10,000
- Billing: free

## Charges

- Also pays for: from the same budget: KeywordPlanIdeaService.GenerateKeywordForecastMetrics · KeywordPlanIdeaService.GenerateKeywordHistoricalMetrics

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Using the KeywordPlanIdeaService, you can discover keyword suggestions that are relevant to your Google Search campaign, or retrieve historical metrics for an existing list of keywords.

## Data

- Keep data: no limit
- Use data: Permitted Access. You will only access (or attempt to access) the Google Ads API by the means described in the Google Ads API Specifications. You will not misrepresent or mask your identity when using the Google Ads API. [...] Use of the Google Ads API is subject to applicable Google policies available at https://support.google.com/adspolicy/answer/6169371 or other URL as provided by Google from time to time ("Policies"). [...] Compliance with Law. You are responsible for complying with all applicable governmental laws, rules, and regulations. You must not use the Google Ads API in a manner that violates such laws, rules, and regulations, or in a manner that is deceptive, unethical, false, or misleading. Usage and Quotas. [...] You must not attempt to exceed automated use-quota restrictions. [...] Data Protection. (A) To the extent that you access, use or otherwise process (i) any information that directly or indirectly identifies a natural person, or (ii) information that is not specifically about an identifiable individual but, when combined with other information, may directly or indirectly identify a natural person ("Personal Information") made available by Google, you will: [...] use or otherwise access Personal Information only for purposes which are consistent with the consent obtained from the individual to whom the Personal Information relates or as expressly permitted in these terms by Google [...] Permissible use only applies to Google Cloud projects with Standard access level. Permissible use is allocated based on intended use of the Google Ads API. [...] Researching keywords and recommendations | Allow the Google Cloud project to access RecommendationService, KeywordPlanIdeaService, and KeywordPlanService. This is only used by tools requiring suggestions to help facilitate the creation and management of Google Ads campaigns.

## Plan

- Pay: $0
- Enough for: no limit

## Rate limit

- Per second: 1
- Batch: 20

## Speed

- Answer: in the call

## The call

- You send: Content-Type header "application/json", customer_id, one of keywordSeed.keywords, urlSeed.url, keywordAndUrlSeed.url with keywordAndUrlSeed.keywords, or siteSeed.site. Optional: language, geoTargetConstants, keywordPlanNetwork, includeAdultKeywords, keywordAnnotation, aggregateMetrics, historicalMetricsOptions, pageSize, pageToken
- Method: POST
- Path: /v26/customers/{customer_id}:generateKeywordIdeas

## About the plan

- Plan: Standard
- Who can get it: a Google Cloud project granted Standard access after a detailed manual audit (typically 10 business days), only for developers who require unlimited Google Ads API operations, such as large companies or tools that serve many users, the tool must comply with the Required Minimum Functionality, and a finding of non-compliance in the API Review Team's audit may require non-compliance fees

## The 12 fields the plan's answer can hold

keyword, close variants, search volume, monthly searches, competition, competition index, low top of page bid, high top of page bid, cost per click, keyword concepts, device breakdown, total results

## Google Ads API's plans (2)

- [Google Ads API, free, Standard](https://datacircle.dev/related-keywords-apis/google-ads-api/free-standard/llms.txt): $0.00 per 1,000, 67% complete
- [Google Ads API, free, Basic](https://datacircle.dev/related-keywords-apis/google-ads-api/free-basic/llms.txt): $0.00 per 1,000, 67% complete

## Google Ads API's calls for this API (1)

- `POST /v26/customers/{customer_id}:generateKeywordIdeas`: [Google Ads API, free, Standard](https://datacircle.dev/related-keywords-apis/google-ads-api/free-standard/llms.txt)

## Google Ads API's APIs (2)

- [Google Ads API: keyword research API pricing, 2 plans](https://datacircle.dev/keyword-research-apis/google-ads-api/free-standard/llms.txt)
- [Google Ads API: related keywords API pricing, 2 plans](https://datacircle.dev/related-keywords-apis/google-ads-api/free-standard/llms.txt)

## Google Ads API: related keywords API alternatives

- [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
- [Bing Webmaster Tools, free](https://datacircle.dev/related-keywords-apis/bing-webmaster-tools/free/llms.txt): $0.00 per 1,000, 17% complete
- [Bukvarix, free, Without registration, POST /v1/mkeywords/](https://datacircle.dev/related-keywords-apis/bukvarix/free-without-registration-post-v1-mkeywords/llms.txt): $0.00 per 1,000, 17% complete, as of 2026-09-11
- [Mangools, free](https://datacircle.dev/related-keywords-apis/mangools/free/llms.txt): $0.00 per 1,000, 83% 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://developers.google.com/google-ads/api/docs/api-policy/access-levels?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://developers.google.com/google-ads/api/docs/best-practices/quotas?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://developers.google.com/google-ads/api/docs/best-practices/test-accounts?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://developers.google.com/google-ads/api/docs/get-started/introduction?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://developers.google.com/google-ads/api/docs/keyword-planning/generate-keyword-ideas?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://developers.google.com/google-ads/api/docs/keyword-planning/overview?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://developers.google.com/google-ads/api/docs/productionize/access-levels?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://developers.google.com/google-ads/api/docs/rate-sheet?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://developers.google.com/google-ads/api/reference/rpc/v26/GenerateKeywordIdeaResponse?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://developers.google.com/google-ads/api/reference/rpc/v26/GenerateKeywordIdeaResult?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://developers.google.com/google-ads/api/reference/rpc/v26/KeywordPlanHistoricalMetrics?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://developers.google.com/google-ads/api/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing