ZoomInfo alternatives for finding similar companies

ZoomInfo's lookalike surface is reached through its GTM CLI rather than an HTTP API, and it is measured here on the same seeds and by the same judge panel as everything else, so the comparison is like for like. Because it returns at most 25 results it is ranked on top-of-list precision only. This is an independent benchmark of company lookalike / similar-companies APIs, ranked on how relevant the companies each one returns actually are, across 48 B2B seed companies. All are self-serve, so you can verify on your own accounts without a sales call.

[01] evidence

Benchmark evidence and per-seed audit trail

Same seed companies, same judge panel, Precision@10 and Precision@100 where each endpoint supports that depth — plus the per-seed matrix so you can inspect how each vendor behaved on each company.

long listPrecision@100: how relevant a vendor stays a hundred companies deep. The metric for lists that feed automated sequences. 3 vendors cannot appear here: their endpoint returns fewer than 100 results.

Long-list lookalike quality: aggregate Precision@100 by company lookalike API vendor
Rank	Vendor	Precision@100	Avg latency	Relevant / $1 at 100
1	Extruct	61.1%	2,361 ms	624
2	Ocean.io	59.5%	2,444 ms	37
3	Parallel	56.9%	2,680 ms	11,383
4	Exa	48.6%	3,014 ms	501
5	Discolike	34.6%	1,164 ms	66

short listPrecision@10: how relevant the top of the list is. The metric that matters when a person works the results by hand and only the first few rows get touched. Every measured vendor appears here, and the only question asked of them is whether the companies are right.

Short-list lookalike quality: aggregate Precision@10 by company lookalike API vendor
Rank	Vendor	Precision@10
1	PredictLeads	89.8%
2	Exa	80.8%
3	Extruct	75.0%
4	Ocean.io	74.3%
5	Parallel	69.2%
6	ZoomInfo	67.1%
7	Discolike	41.9%
8	CUFinder	38.9%

benchmarks/lookalike/lookalike-2026-q348 examples · 8 vendors

audit viewcell = Precision@100; the small label shows P@10N/Avendor not yet run (or returned fewer than K results)click any scored cell to view the companies that vendor returned

#	Company type	Discolike
01	Corporate spend management platforms for companies that offer any of corporate cards, expense management, travel booking, or bill payFintechseed exampleBrexbrex.com
02	Cloud observability and monitoring platforms that offer any of application performance monitoring, log management, security monitoring, or synthetic monitoringDevtoolsseed exampleDatadogdatadoghq.com
03	Global logistics and transportation companies that offer any of parcel delivery, freight, shipping, or supply-chain servicesLogisticsseed exampleFedExfedex.com	N/A
04	Global hospitality companies that offer any of hotel, lodging, travel, or guest loyaltyHospitalityseed exampleMarriottmarriott.com
05	Commercial real estate services and investment firms that offer any of property leasing, facilities, valuation, or asset managementReal Estateseed exampleCBREcbre.com

Full routing by workflow, latency, cost, and methodology: the lookalike benchmark →

[02] faq

ZoomInfo alternatives — common questions

What is the best ZoomInfo alternative for finding similar companies?

For the lookalike / similar-companies job specifically, self-serve providers are measured head-to-head on identical seeds: Extruct currently leads on long-list relevance (Precision@100 61.1%) and PredictLeads on top-of-list precision (Precision@10 89.8%). All expose a self-serve API — no sales call required to test them on your own accounts.

Is ZoomInfo good for company lookalikes?

It can now be said with measured data. ZoomInfo is scored on the same seed companies and by the same three-model judge panel as every other provider on the board. Its endpoint returns at most 25 results, so it is ranked on top-of-list precision (Precision@10) and does not appear on the long-list board. It is reached through the GTM CLI at gtm.ai rather than an HTTP API, which changes how you call it but not whether it can be tested on identical seeds alongside the measured providers. Its lookalike quality is a vendor claim until measured. What is measurable: the self-serve alternatives on this page, on identical inputs.

Does this cover ZoomInfo's contact data and intent data too?

No — honest scope: ZoomInfo is a broad sales-intelligence platform, and this benchmark measures only the similar-companies / lookalike job. Contact data, intent data, and org charts are different products, not measured here; treat vendor accuracy claims on those accordingly.

How were these ZoomInfo alternatives measured?

Every provider received the same seed companies and returned its top 100 lookalikes; a three-model LLM judge panel scored each returned company for relevance, on identical inputs. No vendor pays for inclusion or rank, and every cell is reproducible from the published raw request/response and judge prompts.