# Leadex, free: Company discovery API

> Run an audience query end-to-end and return leads inline.

Leadex's company discovery API on its Free plan. It costs $0.00 per 1,000 companies. Leadex's docs list 4 of the 13 key fields we check: Description, Type and status, Social profiles, Headquarters.
We haven't run Leadex through [our company discovery API benchmark](https://datacircle.dev/best-company-discovery-api.txt) yet.
This plan is free. We rank 881 plans for company discovery APIs by price. Half the plans cost $1.00 per 1,000 companies or less.
[StackScan's $189 monthly plan](https://datacircle.dev/company-discovery-apis/stackscan/189-monthly-enterprise-post-v1-tech-lookup-lists/llms.txt) is the cheapest paid plan per 1,000 companies. StackScan's $189 monthly plan charges nothing per call. You get as many companies as StackScan's rate limit allows.
[PeopleSearch.im's $5 pack](https://datacircle.dev/company-discovery-apis/peoplesearch-im/5-pack/llms.txt) covers any number of companies. PeopleSearch.im's $5 pack costs less up front than StackScan's $189 monthly plan.
[GetProspect](https://datacircle.dev/company-discovery-apis/getprospect/49-monthly/llms.txt), [Hunter](https://datacircle.dev/company-discovery-apis/hunter/49-monthly-starter-post-discover/llms.txt) and [PeopleSearch.im](https://datacircle.dev/company-discovery-apis/peoplesearch-im/5-pack/llms.txt) are the best company discovery API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/company-discovery-apis/leadex/free
- [Company discovery API: the best of 70+ providers compared](https://datacircle.dev/best-company-discovery-api.txt)
- Get it: https://getleadex.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Request: `POST https://api.getleadex.com/v1/search`
- API key: with the plan, on https://getleadex.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Its API docs: https://docs.getleadex.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing#ep-search
- Sold by: Leadex (https://getleadex.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing)
- Checked: 2026-11-06

## In the answer

- Completeness: 31%
- Description: ✓
- Type and status: ✓
- Social profiles: ✓
- Headquarters: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Most per search: 2,000
- Also pays for: from the same budget: Send a user message (triggers planner) · Approve and start a pending job

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Run an audience query end-to-end and return leads inline.

## Data

- Freshness: live
- Keep data: no limit
- Use data: You retain all rights in the data you input or generate through the Service, and grant us a limited licence to process it as needed to operate and improve the Service. [...] You agree not to, and not to permit anyone to: Use the Service to send spam, phishing, or other unlawful communications, Scrape, collect, or use personal data in violation of GDPR, ePrivacy, or other applicable laws, Target consumers as opposed to business contacts, unless you have a lawful basis to do so, Bypass or attempt to bypass rate limits, authentication, or access controls, Reverse-engineer, decompile, or attempt to derive source code, except to the extent permitted by mandatory law, Resell, sublicense, or make the Service available to third parties outside your organisation without our written consent, Use the Service to build a competing product or to benchmark it for publication without our written consent, Introduce malware or interfere with the integrity or performance of the Service. [...] Do not use the API to harass individuals, build HR blocklists, or target protected classes.

## Plan

- Pay: $0
- You get: 500 tokens
- Expires: 14 days

## Rate limit

- Batch: 1

## Speed

- Answer: in the call or by polling

## The call

- You send: prompt. Optional: max_rows, max_credits, wait, format
- Method: POST
- Path: /search

## About the plan

- Plan: Free
- Who can get it: businesses: 18 or older, with authority to bind the entity they act for

## The 21 fields the plan's answer can hold

lead ID, job ID, company name, company domain, company LinkedIn URL, company HQ city, research fields, source type, source URL, source retrieved at, confidence, summary, status, artifact ID, artifact format, artifact rows, artifact size, artifact columns, artifact download URL, artifact expires at, artifact created at

## Leadex's plans (8)

- [Leadex, free](https://datacircle.dev/company-discovery-apis/leadex/free/llms.txt): $0.00 per 1,000, 31% complete, live
- [Leadex, top-up from $10](https://datacircle.dev/company-discovery-apis/leadex/top-up-from-10/llms.txt): 31% complete, live
- [Leadex, $20 monthly](https://datacircle.dev/company-discovery-apis/leadex/20-monthly/llms.txt): 31% complete, live
- [Leadex, $100 monthly](https://datacircle.dev/company-discovery-apis/leadex/100-monthly/llms.txt): 31% complete, live
- [Leadex, $200 monthly](https://datacircle.dev/company-discovery-apis/leadex/200-monthly/llms.txt): 31% complete, live
- [Leadex, $192 yearly](https://datacircle.dev/company-discovery-apis/leadex/192-yearly/llms.txt): 31% complete, live
- [Leadex, $960 yearly](https://datacircle.dev/company-discovery-apis/leadex/960-yearly/llms.txt): 31% complete, live
- [Leadex, $1,920 yearly](https://datacircle.dev/company-discovery-apis/leadex/1920-yearly/llms.txt): 31% complete, live

## Leadex's calls (1)

- `POST /search`: [Leadex, free](https://datacircle.dev/company-discovery-apis/leadex/free/llms.txt)

## Leadex's APIs (2)

- [Leadex: company discovery API pricing, 8 plans](https://datacircle.dev/company-discovery-apis/leadex/free/llms.txt)
- [Leadex: people search API pricing, 8 plans](https://datacircle.dev/people-search-apis/leadex/free/llms.txt)

## Leadex: company discovery API alternatives

- [Findymail, free trial, POST /api/intellimatch/search, Search leads](https://datacircle.dev/company-discovery-apis/findymail/free/llms.txt): $0.00 per 1,000, 31% complete, live
- [Captapi, free](https://datacircle.dev/company-discovery-apis/captapi/free/llms.txt): $0.00 per 1,000, 38% complete, live
- [SerpKite, free](https://datacircle.dev/company-discovery-apis/serpkite/free/llms.txt): $0.00 per 1,000, 23% complete, live
- [Omkar Cloud, free](https://datacircle.dev/company-discovery-apis/omkar-cloud/free/llms.txt): $0.00 per 1,000, 31% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-06.

- https://docs.getleadex.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://docs.getleadex.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://docs.getleadex.com/openapi.yaml?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://getleadex.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://getleadex.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://getleadex.com/terms.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing