Company discovery API
TheirStack, free
$0.00per 1,000 companies
Plan: Free one of TheirStack's 13 plans
- FreeFree$0.00 per 1,000
- $49 monthly1,500 API credits$98.00 per 1,000
- $100 monthly5,000 API credits$60.00 per 1,000
- $169 monthly10,000 API credits$50.70 per 1,000
- $240 monthly20,000 API credits$36.00 per 1,000
- $400 monthly50,000 API credits$24.00 per 1,000
- $600 monthly100,000 API credits$18.00 per 1,000
- $900 monthly200,000 API credits$13.50 per 1,000
- $1,200 monthly500,000 API credits$7.20 per 1,000
- $1,500 monthly1,000,000 API credits$4.50 per 1,000
- $2,300 monthly2,000,000 API credits$3.45 per 1,000
- $5,500 monthly5,000,000 API credits$3.30 per 1,000
- Contact us5M+
Call:
POST / TheirStack's only callAbout this item
- Stored. You get companies from TheirStack's database. TheirStack's pages don't say how old its data is.
- Nothing to pay. You get 200 credits a month, enough for about 66 results a month.
- One call. You send its inputs to
POST /. The call returns the companies your filters find.v1/ companies/ search - Who can get it: anyone with a business email address who has never paid for any credits. Keep data: no limit, a whole dataset: deleted within 30 days of the term's end. Use data: with conditions.
Compare with similar plans
Other providers' plans with the closest prices per 1,000. Like this plan, each is a stored copy.
| This planTheirStack, free | DataForSEO, free | The Companies API, free | |
|---|---|---|---|
| $ per 1,000 | $0.00 | $0.00 | $0.00 |
| Billing | free | free | free |
| Pay | $0 | $0 | $0 |
| Enough for | about 66 results a month | about 833 results, once | 500 results |
| Freshness | stored | stored | stored |
| Who can get it | anyone with a business email address who has never paid for any credits | new accounts, one each, not in Russia, Belarus, Cuba, Iran, Syria, Myanmar, North Korea or Russian-occupied Ukraine | anyone |
Sources
From each provider's own pricing page and docs. We read this row from these pages on 2026-10-17.
- theirstack.com/en/docs/api-reference/companies/search_companies_v1
- theirstack.com/en/docs/api-reference/companies/technographics_v1
- theirstack.com/en/docs/data/job
- theirstack.com/en/docs/data/job/sources
- theirstack.com/en/docs/legal/terms-and-conditions
- theirstack.com/en/docs/pricing/credits
- theirstack.com/en/docs/pricing/plans
- theirstack.com/en/pricing
Product details
We list each column of this plan's row on the sheet that has a value.
| $ per 1,000 | $0.00 |
|---|---|
| Billing | free |
| Repeat free | never |
|---|---|
| Per | result |
| $ per 1,000 | $0.00 |
|---|
| Their pitch | This endpoint lets you search for companies by technology stack, hiring signals, and firmographics. |
|---|
| Freshness | stored |
|---|---|
| Keep data | no limit, a whole dataset: deleted within 30 days of the term's end |
| Use data | B2B sales, marketing, recruiting, job reposting, not resold as a dataset, tech data only behind a login |
| Pay | $0 |
|---|---|
| You get | 200 credits a month |
| Enough for | about 66 results a month |
| Per day | 400 |
|---|---|
| Per second | 0.014 |
| Answer | in the call |
|---|
| You send | nothing required, technologies, job filters (title, description, posted at), company country, industry, employee count, revenue, funding, page, limit |
|---|---|
| Method | POST |
| Path | /v1/companies/search |
| Plan | Free |
|---|---|
| Who can get it | anyone with a business email address who has never paid for any credits |
The 25 fields in the plan's answer
name, domain, LinkedIn URL, logo, industry, country, city, employee count, employee count range, founded, annual revenue, total funding, funding stage, last funding round, investors, publicly traded symbol, YC batch, description, keywords, technologies, job count, jobs last 30 days, matching jobs, matching technologies, recruiting agency