Lookalike Discovery

    Find Similar Companies to Your Best Customers

    Got a customer you wish you had 100 more of? Paste their domain into Leads10. Our AI finds similar B2B companies that share their industry, size and pain points — each with a fit score and match reason.

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    The short answer

    To find similar companies to your best customer, start from that customer's domain rather than from industry filters. Leads10 reads the seed company's website, derives what kind of business it is and who buys from it, then returns lookalike companies with a fit score from 70 to 100 and a written match reason explaining the resemblance. It returns companies, not individual contact records.

    Last reviewed September 5, 2026 · Leads10

    What are lookalike companies?

    Lookalike companies are B2B accounts that share key characteristics with a seed company you already know works as a customer. Lookalike discovery is the most efficient form of prospecting because it's grounded in proven product-market fit: instead of guessing your ICP, you let your best existing customers define it. Leads10 automates this with AI analysis of the seed domain plus a verification pipeline that filters out poor matches.

    • Seed: any customer or competitor domain you'd like to clone.
    • Match factors: industry, company size, products/services, buyer profile, pain points.
    • Output: verified lookalike companies with fit scores.
    • Use case: account-based marketing (ABM), territory expansion, vertical entry.

    How It Works

    1

    Pick a Seed

    Choose your best customer's domain.

    2

    AI Profile

    AI extracts what makes them an ideal customer.

    3

    Lookalike Search

    AI identifies similar companies.

    4

    Outreach Ready

    Get LinkedIn URLs, fit scores and match reasons.

    Related guides

    Frequently Asked Questions

    What does 'lookalike companies' mean in B2B?+

    Lookalike companies are accounts that share key traits — industry, size, technology stack, business model, target customers — with a seed company you already know is a great customer. Lookalike modeling is the B2B equivalent of Facebook's lookalike audiences but applied to companies, not people.

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    How does Leads10 find lookalike companies?+

    You provide a seed domain (your best customer or a competitor). Leads10 AI analyzes the seed company's website to extract industry, size, offerings, target customers and pain points. It then searches for real companies that match those signals and runs each through a verification pipeline before scoring fit.

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    Can I find lookalikes for my competitor's customers?+

    Yes. Use a competitor's customer (publicly known case study) as the seed. Leads10 will surface similar companies that may also need what your competitor sells — and that you could win.

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    How many lookalikes can I generate?+

    You choose the batch size when you run. Run multiple batches with different seed domains to grow your target list.

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    Is lookalike discovery accurate?+

    Leads10 only returns prospects with a fit score of 70/100 or higher. Each match also includes a 3-part match reason explaining why the company is similar to the seed — so you can validate the logic before outreach.

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