# OpenRush, top-up from $10: Related keywords API

> Expand a seed term into a ranked demand list.

OpenRush's Prepaid credits plan for the related keywords API costs $0.15 per 1,000 keywords. OpenRush's docs list 1 of the 6 fields on our checklist: Search volume.
We haven't run OpenRush 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 63% 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/openrush/top-up-from-10
- [Related keywords API: the 9 best providers compared](https://datacircle.dev/best-related-keywords-api.txt)
- Get it: https://www.openrush.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Request: `POST https://api.openrush.com/v1/tools/research_keywords`
- API key: with the plan, on https://www.openrush.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Its API docs: https://www.openrush.com/docs/api-reference/tools?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing#research-keywords
- Sold by: OpenRush (https://www.openrush.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 17%
- Search volume: ✓

## Price

- $ per 1,000 keywords: $0.15
- Per: page of 200
- Billing: pay first

## Charges

- Also pays for: from the same budget: Inspect domain · Discover competitors · Compare keyword coverage · Inspect backlinks · Backlink gap · Inspect SERP · Inspect search visibility · Inspect AI visibility · Discover AI citations · Audit site · Inspect keyword · Inspect page · Export dataset · Get search performance · Get website analytics · Get ad performance

## Not found

- $ per 1,000: $30.00

## In their words

- Their pitch: Expand a seed term into a ranked demand list.

## Data

- Freshness: 1 day
- Keep data: no limit
- Use data: You may not use OpenRush, or anything you get from it, to copy, rebuild, or improve a competing service. You may not access or use the Service, or any outputs, data, documentation, or other materials obtained through it (together, "OpenRush Materials"), to build, train, improve, or operate any product or service that competes with or substitutes for OpenRush, or to help anyone else do so. This includes: copying, replicating, or reverse engineering the Service's features, functions, workflows, interfaces, prompts, tool designs, output formats, or data structures, extracting, compiling, or storing OpenRush Materials in bulk to create or enrich a dataset, index, or database, using OpenRush Materials to train, fine-tune, evaluate, or ground an AI model, agent, or tool that offers similar functionality, benchmarking, comparing, or testing the Service for competitive purposes, or publishing such results without our prior written consent, or accessing the Service if you are, or are acting for, a competitor of OpenRush, unless we give prior written consent. [...] This section does not limit your normal use of outputs in your own marketing work or client deliverables. [...] You agree not to use the Service to: break the law or violate another person's rights, send, store, or request illegal, harmful, or abusive content, attempt to bypass authentication, billing, limits, or security controls, probe, scan, overload, scrape, or disrupt the Service, resell or sublicense the Service without our written permission, submit data you are not allowed to use or share, misrepresent OpenRush outputs as guaranteed facts when they are estimates, summaries, or probabilistic recommendations, or use the Service in a way that could damage OpenRush, our users, our providers, or the public.

## Plan

- Pay: $10
- You get: 1,000 credits
- Enough for: about 333 pages

## Rate limit

- Per day: 10,000
- Per second: 0.28
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: seed. Optional: location, language, mode, limit, min_volume, intent
- Method: POST
- Path: /v1/tools/research_keywords

## About the plan

- Plan: Prepaid credits
- Who can get it: anyone at least 18 years old and legally able to enter into the terms, for business, professional or organizational use

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

seed keyword, location, mode, keywords, search volume

## OpenRush's plans (1)

- [OpenRush, top-up from $10](https://datacircle.dev/related-keywords-apis/openrush/top-up-from-10/llms.txt): $0.15 per 1,000, 17% complete, 1 day

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

- `POST /v1/tools/research_keywords`: [OpenRush, top-up from $10](https://datacircle.dev/related-keywords-apis/openrush/top-up-from-10/llms.txt)

## OpenRush's APIs (7)

- [OpenRush: SERP API pricing, 1 plan](https://datacircle.dev/serp-apis/openrush/top-up-from-10/llms.txt)
- [OpenRush: backlink API pricing, 1 plan](https://datacircle.dev/backlink-apis/openrush/top-up-from-10/llms.txt)
- [OpenRush: similar companies API pricing, 1 plan](https://datacircle.dev/similar-company-apis/openrush/top-up-from-10/llms.txt)
- [OpenRush: domain authority API pricing, 1 plan](https://datacircle.dev/domain-authority-apis/openrush/top-up-from-10/llms.txt)
- [OpenRush: keyword research API pricing, 1 plan](https://datacircle.dev/keyword-research-apis/openrush/top-up-from-10/llms.txt)
- [OpenRush: related keywords API pricing, 1 plan](https://datacircle.dev/related-keywords-apis/openrush/top-up-from-10/llms.txt)
- [OpenRush: ranked keywords API pricing, 1 plan, POST /v1/tools/inspect_domain](https://datacircle.dev/ranked-keywords-apis/openrush/top-up-from-10-prepaid-credits-post-v1-tools-inspect-domain/llms.txt)
- [OpenRush: ranked keywords API pricing, 1 plan, POST /v1/tools/inspect_page](https://datacircle.dev/ranked-keywords-apis/openrush/top-up-from-10-prepaid-credits-post-v1-tools-inspect-page/llms.txt)

## OpenRush: related keywords API alternatives

- [Omkar Cloud, free](https://datacircle.dev/related-keywords-apis/omkar-cloud/free/llms.txt): $0.00 per 1,000, 67% complete, live
- [AIsa, free, Starter, POST /apis/v1/dataforseo/keywords_data/google_ads/keywords_for_keywords/live](https://datacircle.dev/related-keywords-apis/aisa/free-starter-post-apis-v1-dataforseo-keywords-data-google-ads-keywords-for-keywords-live/llms.txt): $0.00 per 1,000, 67% complete, live
- [DataForSEO, top-up from $50, Pay as you go, POST /v3/keywords_data/bing/keywords_for_keywords/live](https://datacircle.dev/related-keywords-apis/dataforseo/top-up-from-50-pay-as-you-go-post-v3-keywords-data-bing-keywords-for-keywords-live/llms.txt): $0.03 per 1,000, 67% complete, live
- [QuanticData, $299 monthly](https://datacircle.dev/related-keywords-apis/quanticdata/299-monthly/llms.txt): $0.167 per 1,000, 0% complete, live

## 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://www.openrush.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://www.openrush.com/docs/api-reference/endpoint-index?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://www.openrush.com/docs/api-reference/tools?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://www.openrush.com/docs/fundamentals/credits-and-rate-limits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://www.openrush.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://www.openrush.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing