# SEOLizer, €49.95 monthly: Similar companies API

> Finde thematisch ähnliche Domains (Similar Domains)

SEOLizer's Starter plan lets you call the similar companies API. We check each provider's docs for 13 fields. SEOLizer's docs list 1: Domain.
We haven't run SEOLizer through [our similar companies API benchmark](https://datacircle.dev/best-similar-companies-api.txt) yet.
This plan costs €49.95 a month. We rank 169 plans for similar companies APIs by price. Half the plans cost $1.00 or less per 1,000 companies.
[GovConAPI's $39 monthly plan](https://datacircle.dev/similar-company-apis/govconapi/39-monthly/llms.txt) is the cheapest paid plan per 1,000 companies, for the United States only, with no charge per call. You get as many companies as GovConAPI's rate limit allows. [Tomba's pay-as-you-go plan](https://datacircle.dev/similar-company-apis/tomba/pay-as-you-go/llms.txt) costs the least for 10,000 companies a month: $1.25.
[ZoomInfo's $45 pack](https://datacircle.dev/similar-company-apis/zoominfo/45-pack/llms.txt) covers any number of companies, and costs more up front than GovConAPI's $39 monthly plan.
[ScrapeAtlas](https://datacircle.dev/similar-company-apis/scrapeatlas/19-pack/llms.txt), [LeadMagic](https://datacircle.dev/similar-company-apis/leadmagic/499-monthly-professional-post-v3-companies-lookalike/llms.txt) and [Findymail](https://datacircle.dev/similar-company-apis/findymail/249-monthly/llms.txt) are the best similar companies API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/similar-company-apis/seolizer/49-95-monthly
- [Similar companies API in 2026: the best of 20+ compared](https://datacircle.dev/best-similar-companies-api.txt)
- Get it: https://www.seolizer.de/preise.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- Request: `GET https://api.seolizer.de/2.1/readdomain/`
- API key: with the plan, on https://www.seolizer.de/preise.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- Its API docs: https://doc.seolizer.de/seolizer-_api:domain-funktionen:readdomain?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- Sold by: SEOLizer (https://www.seolizer.de?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing)
- Checked: 2026-11-12

## In the answer

- Completeness: 8%
- Domain: ✓

## Price

- Billing: monthly
- $ a month: $56.21

## Aggregators

- Aggregators: none

## In their words

- Their pitch: Finde thematisch ähnliche Domains (Similar Domains)

## Data

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

## Plan

- Pay: €49.95
- You get: 2,167 credits a month
- Expires: end of the week

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: domain
- Method: GET
- Path: /2.1/readdomain/

## About the plan

- Plan: Starter
- Who can get it: anyone

## The 2 fields the plan's answer can hold

domain, total results

## SEOLizer's plans (3)

- [SEOLizer, €49.95 monthly](https://datacircle.dev/similar-company-apis/seolizer/49-95-monthly/llms.txt): 8% complete
- [SEOLizer, €89.95 monthly](https://datacircle.dev/similar-company-apis/seolizer/89-95-monthly/llms.txt): 8% complete
- [SEOLizer, €399.95 monthly](https://datacircle.dev/similar-company-apis/seolizer/399-95-monthly/llms.txt): 8% complete

## SEOLizer's calls (1)

- `GET /2.1/readdomain/`: [SEOLizer, €49.95 monthly](https://datacircle.dev/similar-company-apis/seolizer/49-95-monthly/llms.txt)

## SEOLizer's APIs (2)

- [SEOLizer Similar companies API pricing, 3 plans](https://datacircle.dev/similar-company-apis/seolizer/49-95-monthly/llms.txt)
- [SEOLizer Tech stack API pricing, 3 plans](https://datacircle.dev/company-technology-apis/seolizer/49-95-monthly/llms.txt)

## SEOLizer: similar companies API alternatives

[SEOLizer alternatives: other similar companies API providers by price](https://datacircle.dev/seolizer-alternatives.txt)

We list other providers' plans billed monthly.

- [SafeDeal, ₸50,000 monthly](https://datacircle.dev/similar-company-apis/safedeal/50000-monthly/llms.txt): 15% complete
- [Upspring, $149 monthly, Starter, GET /v1/advertisers/{id}/similar](https://datacircle.dev/similar-company-apis/upspring/149-monthly-starter-get-v1-advertisers-id-similar/llms.txt): 8% complete
- [Captapi, $9 monthly](https://datacircle.dev/similar-company-apis/captapi/9-monthly/llms.txt): 8% complete, live
- [InsightSocial, $9.99 monthly](https://datacircle.dev/similar-company-apis/insightsocial/9-99-monthly/llms.txt): 8% complete, live
- [Kampuni, $299 monthly](https://datacircle.dev/similar-company-apis/kampuni/299-monthly/llms.txt): 8% 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 2026-11-12.

- https://doc.seolizer.de/dein_seolizer-account:credits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- https://doc.seolizer.de/seolizer-_api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- https://doc.seolizer.de/seolizer-_api:domain-funktionen:readdomain?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- https://www.seolizer.de/domaininformationen.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- https://www.seolizer.de/preise.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- https://www.seolizer.de/sitemap-pages.xml?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing