About
Leadbay builds an AI-native B2B prospecting and lead-qualification platform for sales teams targeting small and medium-sized businesses, especially in data-scarce industries such as construction, hospitality, manufacturing, and B2B services. Its differentiator is an inference model that discovers and qualifies prospects using sparse, fragmented signals and learns from customers’ won and lost deals.
Market
Leadbay competes in the B2B sales-intelligence, lead-generation, and predictive-prospecting market. It positions itself against broad data platforms such as LinkedIn, Clay, and ZoomInfo by focusing on data-scarce SMB markets, using proprietary inference, crawling, and extrapolation to identify companies and buying signals that conventional databases miss.
Leadbay targets sales teams and B2B companies that sell to small and midsized businesses, including organizations in construction, manufacturing, hospitality, retail, healthcare, and B2B services. Its best fit is companies whose target markets have fragmented, low-signal online data and whose sales teams need to discover and qualify previously hidden prospects.
At a Glance
Problem
Leadbay addresses the difficulty of deciding which information-poor B2B leads are most likely to close. This is especially painful for field-sales teams selling physical goods or services to brick-and-mortar businesses, where reps must prioritize prospects across large territories and often lack the data needed for reliable qualification or closing predictions. The opportunity is substantial: about 80% of B2B sales teams conduct some form of field sales, while large field-sales organizations with 50 or more reps represent roughly 30% of the B2B sales workforce and economy.
The killer use case is helping wholesalers and insurers focus their reps on the highest-quality prospects—for example, suppliers selling to construction, hotel, or restaurant businesses—rather than spending time on low-probability accounts. In economic terms, better prioritization can expand the reachable market and increase the number of leads that sales teams consider genuinely qualified.
Product / Service
Leadbay is a web and mobile application built around three connected workflows: Monitor scores and tracks a sales pipeline, Discover generates leads, and additional capabilities help teams explore new market segments and refine their Ideal Customer Profile. Its domain-specific models are designed to bring data and prediction to the “last mile,” including closing predictions in settings where lead data is sparse.
The benefit is a more focused field-sales motion: reps can identify and work the most promising leads instead of relying primarily on manual research or broad prospecting. Leadbay says its customers have expanded their addressable market threefold and increased the leads they define as qualified tenfold, while positioning the product as a way to qualify leads for agentic workflows.
Market
Leadbay competes in AI-assisted B2B sales intelligence, lead generation, lead qualification, and pipeline prioritization, with an initial focus on field sales for physical-goods and brick-and-mortar markets. The company’s positioning emphasizes domain-specific prediction for information-poor accounts rather than generic data enrichment alone. Clay and traditional go-to-market agencies appear to be important alternative solutions or comparison points; customers have characterized ten minutes on Leadbay as outperforming six months with Clay and a GTM agency.
The available evidence indicates that Leadbay is already commercial rather than clearly pre-revenue. It reports teams at L’Oréal, Saint-Gobain, Gerflor USA, Corgi, and Nespresso B2B as customers or users achieving the stated market-expansion and lead-qualification gains. No revenue, customer-count, or funding figures are provided, so traction is best described as named enterprise adoption and reported performance outcomes rather than quantified financial scale.
Founders & Leadership
Funding History
Y Combinator
Y Combinator
Recent News
Coverage describes Leadbay’s AI platform for identifying and qualifying SMB leads that traditional sales-intelligence tools often miss. The company had secured $4.3 million in seed funding in May 2026.
Pulse2 reported that Leadbay announced a $4.3 million seed round to qualify SMB prospects with limited digital signals.
Leadbay raised $4.3 million from Y Combinator, Rebel Ventures, Roosh Ventures, Inovexus Ventures, TS Ventures, Alumni Ventures, Bright Ventures by Bright Data, Transpose Platform, Deel Ventures, and individual executives. The company plans to expand its U.S. go-to-market team, grow engineering, and deepen its inference model through a research partnership with Sorbonne University.
As part of its May 2026 financing announcement, Leadbay announced a research partnership with Sorbonne University to strengthen the science behind its AI inference model.
Tech Funding News reported that Leadbay raised a $4.2 million seed round backed by Y Combinator to help sales teams discover hidden SMBs that generate few or no digital signals. Other same-day coverage reports the round as $4.3 million.
Y Combinator’s company page recorded Leadbay’s launch announcement, positioning the product as a way to reach more SMBs than LinkedIn and qualify prospects missed by conventional workflows.
Active Roles
3Business Model
Leadbay uses a freemium and subscription SaaS model: a free tier is supplemented by paid plans priced at $100 or $400 per user per month, plus custom enterprise contracts. Enterprise customers receive tailored deployments integrating Leadbay with CRM, ERP, and data-lake systems.