# Cala, free, POST /v1/knowledge/query: Company discovery API

> Get structured, typed JSON rows plus matching entities from Cala's knowledge base.

Cala's company discovery API on its Free plan. It costs $0.00 per 1,000 companies. Cala's docs list 1 of the 13 key fields we check: Type and status.
We haven't run Cala 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/cala/free-post-v1-knowledge-query
- [Company discovery API: the best of 70+ providers compared](https://datacircle.dev/best-company-discovery-api.txt)
- Get it: https://cala.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Request: `POST https://api.cala.ai/v1/knowledge/query`
- API key: with the plan, on https://cala.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Its API docs: https://docs.cala.ai/api-reference/query?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Sold by: Cala (https://cala.ai?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing)
- Checked: 2026-11-06

## In the answer

- Completeness: 8%
- Type and status: ✓

## Price

- $ per 1,000 companies: $0.00
- Per: page, size not stated
- Billing: free

## Aggregators

- Aggregators: none

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Get structured, typed JSON rows plus matching entities from Cala's knowledge base.

## Data

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

## Plan

- Pay: $0
- You get: 100 credits a month
- Enough for: 100 pages a month

## Rate limit

- Per second: 0.17

## Speed

- Answer: in the call

## The call

- You send: input. Optional: return_entities
- Method: POST
- Path: /v1/knowledge/query

## About the plan

- Plan: Free
- Who can get it: anyone

## The 4 fields the plan's answer can hold

entity ID, company name, entity type, mentions

## Cala's plans (2)

- [Cala, free, POST /v1/knowledge/query](https://datacircle.dev/company-discovery-apis/cala/free-post-v1-knowledge-query/llms.txt): $0.00 per 1,000, 8% complete
- [Cala, contact us, Enterprise, POST /v1/knowledge/query](https://datacircle.dev/company-discovery-apis/cala/contact-us-enterprise-post-v1-knowledge-query/llms.txt): 8% complete

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

- `POST /v1/knowledge/query`: [Cala, free, POST /v1/knowledge/query](https://datacircle.dev/company-discovery-apis/cala/free-post-v1-knowledge-query/llms.txt)
- `GET /v1/entities`: [Cala, free, GET /v1/entities](https://datacircle.dev/company-discovery-apis/cala/free-get-v1-entities/llms.txt)

## Cala's APIs (2)

- [Cala: company enrichment API pricing, 2 plans](https://datacircle.dev/company-enrichment-apis/cala/free/llms.txt)
- [Cala: company discovery API pricing, 2 plans, POST /v1/knowledge/query](https://datacircle.dev/company-discovery-apis/cala/free-post-v1-knowledge-query/llms.txt)

## Cala: company discovery API alternatives

- [GetProspect, free](https://datacircle.dev/company-discovery-apis/getprospect/free/llms.txt): $0.00 per 1,000, 62% complete, stored
- [Hunter, free, POST /discover](https://datacircle.dev/company-discovery-apis/hunter/free-post-discover/llms.txt): $0.00 per 1,000, 54% complete, stored
- [PeopleSearch.im, free](https://datacircle.dev/company-discovery-apis/peoplesearch-im/free/llms.txt): $0.00 per 1,000, 38% complete, stored
- [AnVendor, free, POST /v1/leads/search](https://datacircle.dev/company-discovery-apis/anvendor/free-post-v1-leads-search/llms.txt): $0.00 per 1,000, 23% complete, stored

## 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://api.cala.ai/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://cala.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://docs.cala.ai/api-reference/query.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://docs.cala.ai/features/structured-answer?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://docs.cala.ai/index.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://docs.cala.ai/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing