# StartupRadar, contact us, Basic, GET /web/domains/{domain}/similar: Similar companies API

> get similar domains

StartupRadar's similar companies API on its Basic plan. It returns 2 of the 13 key fields we check: Match, Domain.
We haven't run StartupRadar through [our similar companies API benchmark](https://datacircle.dev/best-similar-companies-api.txt) yet.
StartupRadar gives this plan's price on request. We rank 119 plans for similar companies APIs by price. Half the plans cost $1.20 per 1,000 companies or less.
[PublicWWW's $499 monthly plan](https://datacircle.dev/similar-company-apis/publicwww/499-monthly/llms.txt) costs the least per 1,000 companies: $0.000055. PublicWWW charges for each page of results. We count 1,000,000 companies on each page to get the $0.000055 price.
[ZoomInfo's $45 pack](https://datacircle.dev/similar-company-apis/zoominfo/45-pack/llms.txt) covers any number of companies. ZoomInfo's $45 pack costs less up front than PublicWWW's $499 monthly plan.
[LeadMagic](https://datacircle.dev/similar-company-apis/leadmagic/499-monthly-professional-post-v3-companies-lookalike/llms.txt), [Tomba](https://datacircle.dev/similar-company-apis/tomba/pay-as-you-go/llms.txt) and [Social Fetch](https://datacircle.dev/similar-company-apis/social-fetch/14-pack/llms.txt) are the best similar companies API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/similar-company-apis/startupradar/contact-us-basic-get-web-domains-domain-similar
- [Similar companies API: 9 providers compared](https://datacircle.dev/best-similar-companies-api.txt)
- Get it: https://startupradar.co/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- Request: `GET https://api.startupradar.co/web/domains/{domain}/similar`
- API key: with the plan, on https://startupradar.co/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- Its API docs: https://api.startupradar.co/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing#/web/get_domain_similar_web_domains__domain__similar_get
- Sold by: StartupRadar (https://startupradar.co?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing)
- Checked: 2026-11-04

## In the answer

- Completeness: 15%
- Match: ✓
- Domain: ✓

## Price

- Per: page, size not stated
- Billing: contact

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: 57 other calls

## In their words

- Their pitch: get similar domains

## Data

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

## Plan

- You get: 60 requests a day
- Enough for: 60 pages a day

## Rate limit

- Per day: 60
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: domain
- Method: GET
- Path: /web/domains/{domain}/similar

## About the plan

- Plan: Basic
- Who can get it: request access, in private beta with leading VC & PE firms

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

domain, similarity score

## StartupRadar's plans (4)

- [StartupRadar, contact us, Basic, GET /web/domains/{domain}/similar](https://datacircle.dev/similar-company-apis/startupradar/contact-us-basic-get-web-domains-domain-similar/llms.txt): 15% complete
- [StartupRadar, contact us, Standard, GET /web/domains/{domain}/similar](https://datacircle.dev/similar-company-apis/startupradar/contact-us-standard-get-web-domains-domain-similar/llms.txt): 15% complete
- [StartupRadar, contact us, Custom, GET /web/domains/{domain}/similar](https://datacircle.dev/similar-company-apis/startupradar/contact-us-custom-get-web-domains-domain-similar/llms.txt): 15% complete
- [StartupRadar, contact us, Unlimited, GET /web/domains/{domain}/similar](https://datacircle.dev/similar-company-apis/startupradar/contact-us-unlimited-get-web-domains-domain-similar/llms.txt): 15% complete

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

- `GET /web/domains/{domain}/similar`: [StartupRadar, contact us, Basic, GET /web/domains/{domain}/similar](https://datacircle.dev/similar-company-apis/startupradar/contact-us-basic-get-web-domains-domain-similar/llms.txt)
- `GET /organizations/{org_id}/competitors`: [StartupRadar, contact us, Basic, GET /organizations/{org_id}/competitors](https://datacircle.dev/similar-company-apis/startupradar/contact-us-basic-get-organizations-org-id-competitors/llms.txt)

## StartupRadar's APIs (4)

- [StartupRadar: backlink API pricing, 4 plans](https://datacircle.dev/backlink-apis/startupradar/contact-us-basic/llms.txt)
- [StartupRadar: company discovery API pricing, 4 plans](https://datacircle.dev/company-discovery-apis/startupradar/contact-us-basic/llms.txt)
- [StartupRadar: company enrichment API pricing, 4 plans, GET /organizations/{org_id}](https://datacircle.dev/company-enrichment-apis/startupradar/contact-us-basic-get-organizations-org-id/llms.txt)
- [StartupRadar: company enrichment API pricing, 4 plans, GET /web/domains/{domain}/organization](https://datacircle.dev/company-enrichment-apis/startupradar/contact-us-basic-get-web-domains-domain-organization/llms.txt)
- [StartupRadar: similar companies API pricing, 4 plans, GET /web/domains/{domain}/similar](https://datacircle.dev/similar-company-apis/startupradar/contact-us-basic-get-web-domains-domain-similar/llms.txt)

## StartupRadar: similar companies API alternatives

- [Skrapp, contact us, Custom plan, POST /api/v3/companies/bulk-enrich](https://datacircle.dev/similar-company-apis/skrapp/contact-us-custom-plan-post-api-v3-companies-bulk-enrich/llms.txt): 15% complete, stored
- [Upspring, contact us, Enterprise, GET /v1/advertisers/{id}/peers](https://datacircle.dev/similar-company-apis/upspring/contact-us-enterprise-get-v1-advertisers-id-peers/llms.txt): 15% complete
- [Zooq, contact us](https://datacircle.dev/similar-company-apis/zooq/contact-us/llms.txt): 15% complete, live
- [Autotouch AI, contact us](https://datacircle.dev/similar-company-apis/autotouch-ai/contact-us/llms.txt): 15% 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 2026-11-04.

- https://api.startupradar.co/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- https://api.startupradar.co/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- https://startupradar.co?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- https://startupradar.co/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing