Best B2B prospecting tools: find the right companies first

“Prospecting tools” is really three jobs stacked together: pick the target accounts, find the contacts, run the outreach. The measurable core is the first job — AI tools that take your best customers and return lookalike companies. This is an independent benchmark of company lookalike / similar-companies APIs — Ocean.io, Exa, Parallel, Seltz, PredictLeads, Extruct, CUFinder, Discolike, and ZoomInfo — ranked on how relevant the companies each one returns actually are, across 48 B2B seed companies.

[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	Seltz	63.4%	4,835 ms	12,683
2	Extruct	61.1%	2,361 ms	624
3	Ocean.io	59.5%	2,444 ms	37
4	Parallel	56.9%	2,680 ms	11,383
5	Exa	48.6%	3,014 ms	501
6	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	Seltz	84.4%
3	Exa	80.8%
4	Extruct	75.0%
5	Ocean.io	74.3%
6	Parallel	69.2%
7	ZoomInfo	67.1%
8	Discolike	41.9%
9	CUFinder	38.9%

benchmarks/lookalike/lookalike-2026-q348 examples · 9 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	Ocean.io	Exa	Parallel	Seltz	PredictLeads	Extruct	CUFinder	Discolike	ZoomInfo
01	Cloud observability and monitoring platforms that offer any of application performance monitoring, log management, security monitoring, or synthetic monitoringDevtoolsseed exampleDatadogdatadoghq.com
02	Restaurant point-of-sale platforms that offer any of payments, online ordering, payroll, or inventory managementHospitalityseed exampleToasttoasttab.com
03	Plumbing and drain services companies that offer any of plumbing, drain cleaning, water cleanup, or home servicesHome Services SaaS / Chainsseed exampleRoto-Rooterrotorooter.com
04	Construction management software that offer any of project management, financials, quality, safety, or contractorsB2B SaaSseed exampleProcoreprocore.com
05	On-demand consumer super-apps that offer any of ride-hailing, delivery, payments, financial services, or merchant servicesLogisticsseed exampleGrabgrab.com

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

[02] faq

B2B prospecting tools — common questions

What are the best B2B prospecting tools in 2026?

Split the category first: prospecting spans picking target accounts, finding contacts, and running outreach — most "best prospecting tools" lists mix all three. The account-discovery slice is independently measured here: on identical seed companies, Seltz currently leads on long-list relevance (Precision@100 63.4%), PredictLeads on top-of-list precision (Precision@10 89.8%). Contact databases and sequencers are different products — their quality isn't measured by this benchmark, so treat vendor claims there accordingly.

What's the best AI prospecting software for finding companies like my best customers?

That job — seed companies in, ranked lookalike companies out — is exactly what this benchmark measures. Each tool received the same seed companies and a three-model LLM judge panel scored every returned company for relevance. Seltz currently returns the most relevant long lists; PredictLeads is strongest at the top of the list. The measured ranking beats any vendor's own claim about its AI.

How do I find new business prospects that match my ideal customer profile?

Start from evidence, not filters: take your strongest closed-won customers as seed companies — they are your ideal customer profile, demonstrated. Feed them to a lookalike tool and get back ranked companies that resemble them, then layer contacts and outreach on top. The step-by-step outbound version is the closed-won lookalike play; the tools that do the company-matching step are measured on this site.

Are prospecting tools and lookalike tools the same thing?

Overlapping, not identical. 'Prospecting tools' usually means the whole stack — contact databases (Apollo, ZoomInfo), sequencers, dialers. A lookalike tool does one specific job inside that stack: decide which companies belong on your list at all. That choice is upstream of everything else — great contacts and sequences can't fix a list of wrong-fit accounts. This page ranks the measurable company-selection step; company data enrichment is measured separately on this site.