MerchantWords pricing: related keywords API, POST /
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17% complete: 1 of the 6 fields on our checklistSee the 6 fields
$0.0073per 1,000 keywordsWe haven't run MerchantWords through our related keywords API benchmark yet.We rank 243 plans for related keywords APIs by price. Half the plans cost $0.598 or less per 1,000 keywords. This plan costs less per 1,000 keywords than 81% of the 243 plans.Keys.so's ₽34,900 (about $417) monthly plan 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. AnyAPI's pay-as-you-go plan costs the least for 10,000 keywords a month: $1.60.seodata.dev's $4.99 monthly plan 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, Mangools and Bing Webmaster Tools are the best related keywords API providers in the Datacircle benchmark.
Plan: Starter one of MerchantWords's 6 plans
- $79 monthly, StarterStarter$0.0073 per 1,000
- $499 monthly, ProPro$0.0058 per 1,000
- $1,499 monthly, EnterpriseEnterprise$0.0012 per 1,000
- $790 yearly, Starter annualStarter annual$0.0061 per 1,000
- $4,990 yearly, Pro annualPro annual$0.0048 per 1,000
- $14,990 yearly, Enterprise annualEnterprise annual$0.00096 per 1,000
Call:
POST / one of MerchantWords's 2 calls for this APIPOST /$79 monthly, Starter$0.0073 per 1,000keyword-search POST /$79 monthly, Starter$0.0073 per 1,000related-keywords
API: Related keywords API one of MerchantWords's 4 APIs
About this item
- Freshness. We don't know how fresh this plan's data is.
- 1 of the 6 fields on our checklist. Search volume.
- A monthly subscription. You pay $79 a month for up to 216,000 pages.
- One call. You send
keywordtoPOST /. You can also sendrelated-keywords country,minVolumeandlimit. The call returns keywords like the one you send. - Who can get it: anyone who subscribes and accepts the API Terms. Keep data: while your subscription is active. Use data: with conditions.
MerchantWords: related keywords API alternatives
MerchantWords alternatives: other related keywords API providers by price
We list other providers' plans closest to this plan in price per 1,000 keywords.
| This planMerchantWords, $79 monthly, Starter, POST /related-keywords | Marketing Miner, €69 monthly, Digger, GET /keywords/suggestions | Mangools, $5 monthly | Rakko Keyword, ¥19,800 monthly | 5118, CNY 6,000 pack, Package 3, POST /keyword/word/v2 | |
|---|---|---|---|---|---|
| $ per 1,000 keywords | $0.0073 | $0.0078 | $0.0083 | $0.0084 | $0.009 |
| Completeness | 17% | 17% | 83% | 67% | 17% |
| Billing | monthly | monthly | monthly | monthly | pay first |
| Pay | $79 | €69 | $5 | ¥19,800 | CNY 6,000 |
| Enough for | 216,000 pages a month | 100,000 pages a month | 100 pages a day | 3,000 pages a month | 1,000,000 pages |
| Who can get it | anyone who subscribes and accepts the API Terms | business customers: its terms are "not intended for consumers, but only for persons and companies who will use it exclusively in the course of their business" | anyone of legal age to form a binding contract | anyone | anyone with a 5118 account |
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.
Product details
The key fields this plan's answer can hold, then each filled column in its row on the sheet.
- Search volume
- Monthly trend, not in the answer
- Cost per click, not in the answer
- Competition, not in the answer
- Keyword difficulty, not in the answer
- Search intent, not in the answer
| $ per 1,000 keywords | $0.0073 |
|---|---|
| Per | page of 50 |
| Billing | monthly |
| $ a month | $79 |
| Also pays for | from the same budget: Keyword volume lookup · ASIN product lookup · Reverse ASIN search · SERP products · Keyword search |
|---|
| $ per 1,000 | $0.00 |
|---|
| Their pitch | Discover behaviorally related keywords via SERP overlap. Finds keywords that share product rankings with the seed keyword — even if they share no words. |
|---|
| Keep data | while your subscription is active |
|---|---|
| Use data | While you are an active subscriber, you may: Use the data for any internal purpose within your business. Build and sell derivative works -- products, tools, reports, and insights that incorporate MerchantWords data -- to your own customers. Cache and store API responses for reasonable operational use while your subscription is active. If your subscription ends, you agree to delete any cached or stored MerchantWords data. The one hard line: you may NOT redistribute, resell, sublicense, expose, or otherwise hand over the raw MerchantWords data itself (in whole or in substantial part) to any third party. [...] You also agree not to: misrepresent the source of the data, use the API in a way that could impair or harm MerchantWords or anyone's use of its services, attempt to gain unauthorized access to its systems, or reverse engineer the API except where applicable law expressly permits. [...] You agree to: Respect all rate limits and usage quotas applicable to your plan, Request from the API only the minimum data that your Application needs to offer its intended functionality, Not use the API in any manner that threatens the integrity, performance, or reliability of the API or any MerchantWords service, Not work around any technical limitations in the API, Not use the API for performance or stress testing |
| Pay | $79 |
|---|---|
| Enough for | 216,000 pages a month |
| Per second | 0.083 |
|---|---|
| Batch | 1 |
| Answer | in the call |
|---|
| You send | keyword. Optional: country, minVolume, limit |
|---|---|
| Method | POST |
| Path | /related-keywords |
| Plan | Starter |
|---|---|
| Who can get it | anyone who subscribes and accepts the API Terms |
The 9 fields the plan's answer can hold
keyword, search volume, depth, trend, 3-month average volume, 12-month average volume, monthly volumes, overlap score, total results