# The Companies API, free: Similar companies API

> Search for similar companies (competitors, your customers, etc.)

The Companies API's similar companies API on its Free plan, $0.00 per 1,000 companies.

- This page: https://datacircle.dev/similar-company-apis/the-companies-api/free
- Get it: https://www.thecompaniesapi.com/pricing
- Its API docs: https://www.thecompaniesapi.com/api/search-similar-companies
- Sold by: The Companies API (https://www.thecompaniesapi.com)
- Checked: 2026-10-14

## Price

- $ per 1,000: $0.00
- Billing: free

## Charges

- Per: result

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Search for similar companies (competitors, your customers, etc.)

## Data

- Freshness: stored
- Keep data: no limit
- Use data: your internal business purposes only, no resale, commercial or derivative use of the data

## Plan

- Pay: $0
- You get: 500 credits
- Enough for: 500 results

## Rate limit

- Batch: 100

## The call

- You send: domains (1 to 100), page, proximityExact, proximityTerm, simplified, size, sortFields, sortKey, sortOrder
- Method: GET
- Path: /v2/companies/similar

## About the plan

- Plan: Free
- Who can get it: anyone

## The 132 fields in the plan's answer

company ID, company type, industries, industry, languages, name, alternative names, legal name, employee range, employee count, year closed, founded, founding place, Lighthouse accessibility score, Lighthouse best practices score, Lighthouse performance score, Lighthouse SEO score, max server latency, page font count, page request count, page script count, page stylesheet count, page task count, cumulative layout shift, largest contentful paint, time to interactive, total blocking time, estimated monthly visits, published app ID, published app name, published app rating, published app review count, published app type, published apps, primary color, cover image, logos, NAICS codes, SIC codes, acquisitions, parent company, subsidiaries, contact category, emails, LINE accounts, phone numbers, WhatsApp numbers, podcasts, podcast rating, podcast review count, Knowledge Graph description, LinkedIn description, description, tagline, website description, Wikipedia description, alias domains, domain registered date, domain, alternate domains, domain name, domain expiry date, NSFW, redirects to, domain registrant country, domain registrant phone, domain registrar, root domain, website status, HTTP status, domain TLD, domain updated date, estimated revenue range, stock exchange, ticker, coordinates, street address, city, ZIP code, continent, country code, country, county, state, data score, source count, last indexed, email patterns, followers, following, social profile ID, social likes, social members, social monthly views, social posts, social rating, social review count, social talking about count, social profiles, social video count, social check-ins, technologies, technology categories, technology detected at, technology detection method, technology versions, about us page, blog URL, careers page, contact page, Crunchbase URL, developers page, docs page, events page, Glassdoor URL, partnership page, pricing page, privacy policy page, domain registrar URL, Sales Navigator URL, sitemap URL, status page, terms page, updates page, website URL, Wellfound URL, Wikidata URL, Wikipedia URL, embedding vector, score, similar attributes, total results

## The Companies API's plans (7)

- [The Companies API, free](https://datacircle.dev/similar-company-apis/the-companies-api/free/llms.txt): $0.00 per 1,000, stored
- [The Companies API, $95 monthly](https://datacircle.dev/similar-company-apis/the-companies-api/95-monthly/llms.txt): $1.90 per 1,000, stored
- [The Companies API, $295 monthly](https://datacircle.dev/similar-company-apis/the-companies-api/295-monthly/llms.txt): $1.18 per 1,000, stored
- [The Companies API, $595 monthly](https://datacircle.dev/similar-company-apis/the-companies-api/595-monthly/llms.txt): $1.19 per 1,000, stored
- [The Companies API, $950 yearly](https://datacircle.dev/similar-company-apis/the-companies-api/950-yearly/llms.txt): $1.583 per 1,000, stored
- [The Companies API, $2,950 yearly](https://datacircle.dev/similar-company-apis/the-companies-api/2950-yearly/llms.txt): $0.983 per 1,000, stored
- [The Companies API, $5,950 yearly](https://datacircle.dev/similar-company-apis/the-companies-api/5950-yearly/llms.txt): $0.992 per 1,000, stored

## The Companies API's calls (1)

- `GET /v2/companies/similar`: [The Companies API, free](https://datacircle.dev/similar-company-apis/the-companies-api/free/llms.txt)

## Similar plans of other providers

- [CompanyEnrich, free](https://datacircle.dev/similar-company-apis/companyenrich/free/llms.txt): $0.00 per 1,000, stored
- [Tomba, free](https://datacircle.dev/similar-company-apis/tomba/free/llms.txt): $0.00 per 1,000, stored

## Sources

From each provider's own pricing page and docs. We read this row from these pages on 2026-10-14.

- https://api.thecompaniesapi.com/v2/openapi
- https://www.thecompaniesapi.com/
- https://www.thecompaniesapi.com/api
- https://www.thecompaniesapi.com/api/datapoints
- https://www.thecompaniesapi.com/api/rate-limits
- https://www.thecompaniesapi.com/api/search-similar-companies
- https://www.thecompaniesapi.com/pricing
- https://www.thecompaniesapi.com/product/terms