# Leadbay

> Leadbay is a YC F25 B2B sales-intelligence company that uses AI inference to discover, qualify, and score low-signal SMB prospects for human and agentic sales workflows.

Company page on Leadbay: https://mad-max.leadbay.ai/company/leadbay.ai · loaded 2026-10-26

## At a glance

- Website: https://leadbay.ai
- Team based in: San Francisco (yespress.io and 3 more; Sources disagree: Paris (tracxn.com))
- Founded: 2023 (frenchtechjournal.com and 1 more)
- Founders: Ludovic Granger, Milan Stankovic
- Industry: Technology, Information and Internet
- Employees: 8 (employees and founders, investors not counted; yespress.io and 1 more; Sources disagree: 27 (leadbay.ai, a company database, counts investors and advisors))
- Total funding: $4.3M seed, led by Y Combinator (pulse2.com; Sources disagree: $500k (tracxn.com), $4.9M (leadbay.ai, a company database))
- Backed by: Y Combinator, Rebel Fund / Rebel Ventures, Progressive VC, Bright Data Ventures / Bright Ventures, Inovexus Ventures, Roosh Ventures, Station F, TS Ventures, Alumni Ventures, Transpose Platform, Deel Ventures, Alain Bernard (Angel Investor), Joris Seznec (Investor & Advisor), Thomas Chorliet (Angel Investor)
- Seen in its site's code: Google Tag Manager (googletagmanager.com/gtm.js), Google Workspace (MX smtp.google.com), Amazon SES (TXT amazonses.com) (read 2026-10-30)
- Email: contact@leadbay.ai

## What it sells, to whom

- Leadbay is a YC F25 B2B sales-intelligence company that uses AI inference to discover, qualify, and score low-signal SMB prospects for human and agentic sales workflows. ([leadbay.ai](https://leadbay.ai/), [ycombinator.com](https://www.ycombinator.com/companies/leadbay))

## Why it stands out

- Cuts 70% of conversations with companies that will never buy ([leadbay.ai](https://leadbay.ai/))
- Customers 3x'd addressable market and 10x'd qualified leads ([ycombinator.com](https://www.ycombinator.com/companies/leadbay))
- Customers 5X prospecting efficiency ([chicagobuildexpo.com](https://www.chicagobuildexpo.com/exhibitors/leadbay))
- 5× prospecting on one team and one market ([leadbay.ai](https://leadbay.ai/))
- Competes with: Apollo, ZoomInfo, LinkedIn Sales Navigator, Clay, HubSpot/Breeze Intelligence, Warmly ([leadbay.ai](https://www.leadbay.ai/blog/death-of-a-salesforce-birth-of-leadbay), [leadbay.ai](https://www.leadbay.ai/blog/introducingleadbay2-0), [uclic.fr](https://uclic.fr/en/fundraising/leadbay-raises-43m-ai-smb-prospecting-2026))

## Products and services

- **Discover**: generates and ranks new prospects in a target ICP ([leadbay.ai](https://leadbay.ai/blog/manifesto-ai-made-for-b2b-sales-reps), [leadbay.ai](https://leadbay.ai/), [leadbay.ai](https://www.leadbay.ai/blog/manifesto-ai-made-for-b2b-sales-reps))
- **Monitor/Score**: scores existing CRM, ERP, Excel, or uploaded leads by buying potential ([leadbay.ai](https://leadbay.ai/), [leadbay.ai](https://www.leadbay.ai/blog/manifesto-ai-made-for-b2b-sales-reps), [leadbay.ai](https://leadbay.ai/blog/introducing-leadbay-first-model-and-early-results-leadbay-compass))
- **Timeline/Clusters**: explores adjacent market segments and refines the ideal customer profile ([leadbay.ai](https://leadbay.ai/), [leadbay.ai](https://www.leadbay.ai/blog/manifesto-ai-made-for-b2b-sales-reps), [leadbay.ai](https://leadbay.ai/blog/introducing-leadbay-first-model-and-early-results-leadbay-compass))
- **Map**: organizes field visits and surfaces nearby likely buyers ([leadbay.ai](https://leadbay.ai/), [leadbay.ai](https://www.leadbay.ai/blog/manifesto-ai-made-for-b2b-sales-reps), [leadbay.ai](https://leadbay.ai/blog/introducing-leadbay-first-model-and-early-results-leadbay-compass))
- Leadbay MCP / agentic workflow integrations for Claude, ChatGPT, and Copilot ([leadbay.ai](https://leadbay.ai/), [leadbay.ai](https://www.leadbay.ai/blog/manifesto-ai-made-for-b2b-sales-reps), [leadbay.ai](https://leadbay.ai/blog/introducing-leadbay-first-model-and-early-results-leadbay-compass))
- CRM/ERP/data-lake integrations, continuous data cleanup, and customer-specific predictive-model training ([leadbay.ai](https://leadbay.ai/), [leadbay.ai](https://www.leadbay.ai/blog/manifesto-ai-made-for-b2b-sales-reps), [leadbay.ai](https://leadbay.ai/blog/introducing-leadbay-first-model-and-early-results-leadbay-compass))

## Customers and markets

- **Customers**: L'Oréal, Saint-Gobain, Gerflor USA, Corgi, Nespresso B2B, Fayat USA, Deel, Fiderim, DécorAlliance, HomeSpirit ([leadbay.ai](https://leadbay.ai/), [ycombinator.com](https://www.ycombinator.com/companies/leadbay), [linkedin.com](https://linkedin.com/company/leadbay))
- **Markets**: France and the United States are the explicit current countries/markets. ([leadbay.ai](https://leadbay.ai/), [leadbay.ai](https://www.leadbay.ai/become-partner), [leadbay.ai](https://www.leadbay.ai/blog/manifesto-ai-made-for-b2b-sales-reps))
- **Markets**: Primary segment: B2B sales teams selling physical products or services to traditional, field-oriented companies, especially information-poor and fragmented SMB/mid-market markets. ([leadbay.ai](https://leadbay.ai/), [leadbay.ai](https://www.leadbay.ai/become-partner), [leadbay.ai](https://www.leadbay.ai/blog/manifesto-ai-made-for-b2b-sales-reps))

## Team

- Ludovic Granger, Co-founder & CEO · [LinkedIn](https://www.linkedin.com/in/ludovic-granger)
- Milan Stankovic, Co-founder & CTO · [LinkedIn](https://www.linkedin.com/in/milanstankovic)

Backed by: Y Combinator, Rebel Fund / Rebel Ventures, Progressive VC, Bright Data Ventures / Bright Ventures, Inovexus Ventures, Roosh Ventures, Station F, TS Ventures, Alumni Ventures, Transpose Platform, Deel Ventures, Alain Bernard

## Latest news

- 2026-09-04 · [Leadbay's Ludovic Granger on Building AI That Finds the Leads Everyone Else Misses - INSART Leadbay's $4.3M Seed Round: AI for SMB Lead Generation](https://insart.com/leadbay-s-ludovic-granger-on-building-ai-that-finds-the-leads-everyone-else-misses/) (insart.com)
- 2026-05-25 · [US AI startup Leadbay raises $4.3 million with participation from Ukraine’s Roosh Ventures InVenture](https://inventure.com.ua/en/news/ukraine/us-ai-startup-leadbay-raises-dollar4.3-million-with-participation-from-ukraines-roosh-ventures) (inventure.com.ua)
- 2026-05-22 · [Американский AI-стартап Leadbay привлек $4,3 млн при участии украинского фонда Roosh Ventures InVenture](https://inventure.com.ua/news/ukraine/amerikanskij-ai-startap-leadbay-privlek-dollar43-mln-pri-uchastii-ukrainskogo-fonda-roosh-ventures) (inventure.com.ua)
- 2026-05-21 · [Cofondée par un Loir-et-Chérien, la start-up Leadbay franchit un cap](https://www.lanouvellerepublique.fr/blois/cofondee-par-un-loir-et-cherien-la-start-up-leadbay-franchit-un-cap-1779371008) (lanouvellerepublique.fr)
- 2026-05-20 · [With 3.8 million euros, LEADBAY wants to reinvent sales intelligence with its inference models - Businesslife.co](https://www.businesslife.co/with-3-8-million-euros-leadbay-wants-to-reinvent-sales-intelligence-with-its-inference-models/) (businesslife.co)

## Where to find more

- [Documentation](https://docs.leadbay.app/doc)
- [🇫🇷 Webinar Transformation IA : 4 étapes pour mener son pro](https://leadbay.ai/blog/transformation-ia-4-etapes)
- [🇺🇸 Leadbay Manager Dashboard: The pre-CRM tool that finall](https://leadbay.ai/blog/manager-dashboard)
- [🇺🇸 Manifesto: Leadbay discovers and qualifies $B markets o](https://leadbay.ai/blog/manifesto-ai-made-for-b2b-sales-reps)
- [This page in Markdown, for agents](https://mad-max.leadbay.ai/company/leadbay.ai.md)

## Decision makers

- [Ludovic Granger](https://mad-max.leadbay.ai/person/ludovic-granger--leadbay.ai.md), Co-founder & CEO · [LinkedIn](https://www.linkedin.com/in/ludovic-granger)
- [Milan Stankovic](https://mad-max.leadbay.ai/person/milan-stankovic--leadbay.ai.md), Co-founder & CTO · [LinkedIn](https://www.linkedin.com/in/milanstankovic)

Work emails and direct phones come with a Leadbay account: https://wow.leadbay.ai/?register=true

Where it comes from: 26 sites read (leadbay.ai, leadbay.app, linkedin.com, ycombinator.com, uclic.fr, debriefing.io, crunchbase.com, insart.com, …).

## Best angle

2026-10-16 · Product: Announcing the death of people interfaces. We’ve reached the tipping point where people trust AI enough to stop checking lead quality, so they can just let agents do the work. (1 source)

## Best way in

- LinkedIn message to Ludovic Granger: Co-founder & CEO · 6 LinkedIn posts found, latest Jun 23, 2026
- LinkedIn message to Milan Stankovic: Co-founder & CTO · profile linked from the company's record

## Signals: what happened

- 2026-10-26 · Headcount: Headcount up 35% in a year (1 source: [A company database](https://leadbay.ai/))
- 2026-10-16 · Product: Announcing the death of people interfaces. We’ve reached the tipping point where people trust AI enough to stop checking lead quality, so they can just let agents do the work. (1 source: [linkedin.com](https://www.linkedin.com/posts/leadbay_announcing-the-death-of-people-interfaces-activity-7516993318808117248-KnRx))
- 2026-10-16 · Interviews: START: Ludovic Granger, CEO & … - START (1 source: [podcasts.apple.com](https://podcasts.apple.com/us/podcast/start-ludovic-granger-ceo-co-founder-leadbay-qualified/id1790754910?i=1000796732007))
- 2026-10-13 · Events: Leadbay (YC F25) was on stage at Bright Data for SF Tech Week, with Nofar Nistani: (1 source: [linkedin.com](https://www.linkedin.com/posts/leadbay_sftechweek-aiagents-activity-7515656590524346369-Yroc))
- 2026-08-18 · Fundraising: Leadbay's Ludovic Granger on Building AI That Finds the Leads Everyone Else Misses - INSART Leadbay's $4.3M Seed Round: AI for SMB Lead Generation (2 sources: [linkedin.com](https://www.linkedin.com/posts/alumniventures_alumniventures-whyweinvested-leadbay-activity-7495528302917484544-p5Qb), [insart.com](https://insart.com/leadbay-s-ludovic-granger-on-building-ai-that-finds-the-leads-everyone-else-misses/))
- 2026-07-21 · News: "Leadbay qualifies leads for my Claude." What is Claude, OpenAi and Copilot without qualified leads? (1 source: [linkedin.com](https://www.linkedin.com/posts/leadbay_leadbay-qualifies-leads-for-my-claude-activity-7485345350073913344-lfai))
- 2026-06-23 · Product: Today, we introduce Leadbay (YC F25) MCP. And after building it, I’d guess the SaaS interface will die within 6 months. (1 source: [linkedin.com](https://www.linkedin.com/posts/ludovic-granger_today-we-introduce-leadbay-yc-f25-mcp-activity-7475128315348135937-sh-E))
- 2026-06-23 · Interviews: Apple Podcast：《Tech & Co Business》〈L'IA peut-elle trouver les cli⋯〉 (1 source: [podcasts.apple.com](https://podcasts.apple.com/us/podcast/lia-peut-elle-trouver-les-clients-de-demain-23-06/id1245263713?i=1000773939638&l=zh-Hant-TW))
- 2026-05-21 · News: Cofondée par un Loir-et-Chérien, la start-up Leadbay franchit un cap (1 source: [lanouvellerepublique.fr](https://www.lanouvellerepublique.fr/blois/cofondee-par-un-loir-et-cherien-la-start-up-leadbay-franchit-un-cap-1779371008))
- 2026-05-19 · News: How Leadbay Is Bringing ChatGPT-Style Growth Tactics to Enterprise Software (1 source: [frenchtechjournal.com](https://www.frenchtechjournal.com/how-leadbay-is-bringing-chatgpt-style-growth-tactics-to-enterprise-software/))
- 2026-05-19 · Fundraising: Passee par y combinator leadbay leve 43 millions de dollars pour rendre visibles les entreprises que linkedin ignore (10 sources: [journaldunet.com](https://www.journaldunet.com/start-up/1550359-leadbay-leve-4-2-millions-de-dollars-pour-son-ia-dediee-a-la-prospection-commerciale/), [maddyness.com](https://www.maddyness.com/2026/05/19/passee-par-y-combinator-leadbay-leve-43-millions-de-dollars-pour-rendre-visibles-les-entreprises-que-linkedin-ignore/), [techfundingnews.com](https://techfundingnews.com/leadbay-4-2m-seed-yc-apollo-zoominfo-linkedin-sales-intelligence/))
- 2026-04-21 · Partnership: New partnership. Leadbay (YC F25) is partnering with Sorbonne Université to bring science into the real world of B2B sales. (1 source: [linkedin.com](https://www.linkedin.com/posts/leadbay_b2b-ai-research-activity-7452246021797146624-lRYn))

## Working on now

- Leadbay is positioning itself as an AI qualification layer for agentic B2B prospecting: discovering and ranking leads in data- and signal-scarce markets, then delivering them into Claude, ChatGPT and Copilot workflows.
- The product is focused on traditional/physical-product and service B2B teams, especially SMB and mid-market accounts where online data is fragmented; its stated target historically includes companies with roughly 50–500 employees.
- The current product direction is agentic prospecting: MCP-powered workflows, shared team knowledge, market discovery, lead qualification, enrichment and outreach actions, with CRM/ERP/data-lake synchronization.
- Geographic footprint is explicitly France and the United States; the site labels the company live in both markets and recent activity shows a San Francisco base plus a France-wide commercial push.
- Customer proof shown by Leadbay includes L’Oréal, Saint-Gobain, Gerflor USA, Corgi and Nespresso B2B; the company claims these teams expanded addressable markets and qualified-lead volume.

From: [Qualified leads for agentic workflows](https://leadbay.ai/), [Changelog | Leadbay Userdoc](https://docs.leadbay.app/doc/news/changelog), [manifesto-ai-made-for-b2b-sales-reps](https://www.leadbay.ai/blog/manifesto-ai-made-for-b2b-sales-reps), [leadbay.ai](https://www.leadbay.ai/blog)

## Summary

Leadbay is an AI-powered sales prospecting platform that identifies and qualifies business leads in data-scarce markets, specifically targeting SMBs in construction, hospitality, and manufacturing that lack a significant digital footprint [1][2][3]. Unlike traditional tools like LinkedIn or ZoomInfo that rely on online signals, Leadbay uses proprietary multi-modal inference to analyze non-digital data such as public records and logistics flows [2]. In May 2026, the company announced a $4.3 million seed round led by Y Combinator, with participation from Rebel Fund, Progressive VC, Bright Data Ventures, and various angel investors [2][3]. Customers include L'Oréal, Saint-Gobain, Nespresso B2B, and Fiderim [4][2]. Competitors include conventional sales intelligence platforms like Apollo, ZoomInfo, and Clay [2][3]. Recent news includes the June 2026 launch of Leadbay MCP (Model Context Protocol) for Claude and ChatGPT, and the company's expansion with a San Francisco sales office [1][2].

[1]: https://leadbay.ai/ "Qualified leads for agentic workflows"
[2]: https://uclic.fr/en/fundraising/leadbay-raises-43m-ai-smb-prospecting-2026 "Leadbay raises $4.3M to give visibility to the SMEs that sales databases overlook | Uclic"
[3]: https://debriefing.io/intel/leadbay-4m-seed-ai-prospecting-digitally-scarce-smbs "Leadbay Raises $4.3M to Bring AI Sales Intelligence to Underserved SMBs"
[4]: https://www.ycombinator.com/companies/leadbay "Leadbay: Qualified leads for agentic workflows. | Y Combinator"
[5]: https://leadbay.ai/blog/manifesto-ai-made-for-b2b-sales-reps "🇺🇸 Manifesto: Leadbay discovers and qualifies $B markets others can't find."
[6]: https://leadbay.ai/blog/leadbay-keynote-1-ai-model-for-b2b-sales-unveiled "🇺🇸 Leadbay Keynote 1: AI Model for B2B Sales unveiled"
[7]: https://linkedin.com/company/leadbay "Leadbay (YC F25)"
[8]: https://www.crunchbase.com/organization/leadbay-6249 "Leadbay - Crunchbase Company Profile & Funding"

## Sources

- [Leadbay's website](https://leadbay.ai)
- [Changelog | Leadbay Userdoc](https://docs.leadbay.app/doc/news/changelog)
- [🇺🇸 Manifesto: Leadbay discovers and qualifies $B markets others can't find.](https://www.leadbay.ai/blog/manifesto-ai-made-for-b2b-sales-reps)
- [leadbay.ai](https://www.leadbay.ai/blog)