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Leadbay
Leadbay is a Y Combinator (F25) B2B sales startup building a domain-specific AI model that discovers and qualifies small-to-mid-sized business leads that traditional platforms like LinkedIn, ZoomInfo, Apollo, and Clay can't find. Trained on market data, a company's own CRM/ERP history, and reps' instincts, Leadbay learns a team's Ideal Customer Profile and predicts who will buy next - delivering qualified leads directly inside agentic workflows and AI apps like Claude, ChatGPT, and Copilot. Customers in data-scarce industries such as construction, hospitality, manufacturing, and B2B services report roughly 3-5x more qualified prospects. The company raised a $4.3M seed round led by Y Combinator in May 2026 and is based in San Francisco.
Leadspace
Leadspace is a B2B data intelligence company that unifies buyers, accounts, and buying signals into a single continuously updated data layer for go-to-market teams. Its GTM Data Intelligence Cloud enriches, scores, and activates data across CRM and marketing systems like Salesforce, Marketo, and HubSpot, helping sales and marketing teams find, segment, and prioritize their ideal customers. Founded in 2007 and backed by Jerusalem Venture Partners, the company has raised roughly $111M and counts enterprises such as Salesforce, Zoom, and American Express among its customers.