# OpenFunnel, free, DIY, POST /api/v1/account/search-lookalikes-bulk: Similar companies API

> Asynchronous, high-volume variant of Search Lookalikes. Same lookalike engine and inputs, but it accepts up to 10000 companies and runs as a background job.

OpenFunnel's similar companies API on its DIY plan. It costs $0.00 per 1,000 companies. It returns 3 of the 13 key fields we check: Employees, Headquarters, Domain.
We haven't run OpenFunnel through [our similar companies API benchmark](https://datacircle.dev/best-similar-companies-api.txt) yet.
This plan is free. We rank 120 plans for similar companies APIs by price. Half the plans cost $1.265 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/449-monthly/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/openfunnel/free-diy-post-api-v1-account-search-lookalikes-bulk
- [Similar companies API: 9 providers compared](https://datacircle.dev/best-similar-companies-api.txt)
- Get it: https://openfunnel.dev/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- Request: `POST https://api.openfunnel.dev/api/v1/account/search-lookalikes-bulk`
- API key: with the plan, on https://openfunnel.dev/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- Its API docs: https://docs.openfunnel.dev/agent-primitives/search-lookalikes-bulk?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- Sold by: OpenFunnel (https://openfunnel.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing)
- Checked: 2026-11-04

## In the answer

- Completeness: 23%
- Employees: ✓
- Headquarters: ✓
- Domain: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Start fee: $0.00
- Also pays for: from the same budget: Search Lookalikes · Search Companies By Tech Stack · Deep Research

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Asynchronous, high-volume variant of Search Lookalikes. Same lookalike engine and inputs, but it accepts up to 10000 companies and runs as a background job.

## Data

- Keep data: no limit
- Use data: OpenFunnel grants Customer a nonexclusive, limited, personal, nonsublicensable, nontransferable right and license to internally access and use the OpenFunnel product(s) and/or service(s) specified in such Order Form [...] for the internal business purposes of Customer [...]. Except as expressly set forth in this Agreement, Customer shall not (and shall not permit any third party to), directly or indirectly: reverse engineer, decompile, disassemble, or otherwise attempt to discover the source code, object code, or underlying structure, ideas, or algorithms of the Service (except to the extent applicable laws specifically prohibit such restriction), modify, translate, or create derivative works based on the Service, copy, rent, lease, distribute, pledge, assign, or otherwise transfer or encumber rights to the Service, use the Service for the benefit of a third party (other than Customer's Affiliates and service providers using the Service solely on Customer's behalf, where permitted by the Order Form or Plan Terms), remove or otherwise alter any proprietary notices or labels from the Service or any portion thereof, use the Service to build an application or product that is competitive with any OpenFunnel product or service, interfere or attempt to interfere with the proper working of the Service or any activities conducted on the Service, or bypass any measures OpenFunnel may use to prevent or restrict access to the Service (or other accounts, computer systems, or networks connected to the Service).

## Plan

- Pay: $0
- You get: 50,000 credits
- Enough for: 50,000 results, once

## Rate limit

- Batch: 1

## Speed

- Answer: by polling

## The call

- You send: query or seed_domains. Optional: limit, min_employees, max_employees, funding_stages, locations
- Method: POST
- Path: /api/v1/account/search-lookalikes-bulk

## About the plan

- Plan: DIY
- Who can get it: anyone

## The 11 fields the plan's answer can hold

name, domain, LinkedIn URL, headquarters, match reason, employee count, total results, credits used, derived query, resolved seed domains, unresolved seed domains

## OpenFunnel's plans (2)

- [OpenFunnel, free, DIY, POST /api/v1/account/search-lookalikes-bulk](https://datacircle.dev/similar-company-apis/openfunnel/free-diy-post-api-v1-account-search-lookalikes-bulk/llms.txt): $0.00 per 1,000, 23% complete
- [OpenFunnel, contact us, Enterprise / Custom, POST /api/v1/account/search-lookalikes-bulk](https://datacircle.dev/similar-company-apis/openfunnel/contact-us-enterprise-custom-post-api-v1-account-search-lookalikes-bulk/llms.txt): 23% complete

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

- `GET /api/v1/account/search-lookalikes`: [OpenFunnel, free, DIY, GET /api/v1/account/search-lookalikes](https://datacircle.dev/similar-company-apis/openfunnel/free-diy-get-api-v1-account-search-lookalikes/llms.txt)
- `POST /api/v1/account/search-lookalikes-bulk`: [OpenFunnel, free, DIY, POST /api/v1/account/search-lookalikes-bulk](https://datacircle.dev/similar-company-apis/openfunnel/free-diy-post-api-v1-account-search-lookalikes-bulk/llms.txt)

## OpenFunnel's APIs (3)

- [OpenFunnel: company discovery API pricing, 2 plans](https://datacircle.dev/company-discovery-apis/openfunnel/free/llms.txt)
- [OpenFunnel: company enrichment API pricing, 2 plans](https://datacircle.dev/company-enrichment-apis/openfunnel/free/llms.txt)
- [OpenFunnel: similar companies API pricing, 2 plans, POST /api/v1/account/search-lookalikes-bulk](https://datacircle.dev/similar-company-apis/openfunnel/free-diy-post-api-v1-account-search-lookalikes-bulk/llms.txt)

## OpenFunnel: similar companies API alternatives

- [Tomba, free](https://datacircle.dev/similar-company-apis/tomba/free/llms.txt): $0.00 per 1,000, 15% complete, stored
- [Social Fetch, free](https://datacircle.dev/similar-company-apis/social-fetch/free/llms.txt): $0.00 per 1,000, 46% complete, live
- [ZenRows, free (agent storefront)](https://datacircle.dev/similar-company-apis/zenrows/free-agent-storefront/llms.txt): $0.00 per 1,000, 23% complete, live
- [The Companies API, free](https://datacircle.dev/similar-company-apis/the-companies-api/free/llms.txt): $0.00 per 1,000, 92% 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 2026-11-04.

- https://docs.openfunnel.dev/agent-primitives/credits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- https://docs.openfunnel.dev/agent-primitives/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- https://docs.openfunnel.dev/agent-primitives/search-lookalikes-bulk?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- https://docs.openfunnel.dev/helpers/search-lookalikes-bulk-results?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- https://openfunnel.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- https://openfunnel.dev/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing
- https://openfunnel.dev/terms-of-service?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=similar-companies-api-pricing