L

Leadbay

B2B lead discovery and qualification: an AI model learns from a company's won and lost deals and finds and scores prospects in data-scarce SMB markets, delivered in a web app and through an MCP server for Claude and ChatGPT, on free, per-user monthly and enterprise plans.

StageEarly-stage

Founded—

HeadquartersSan Francisco, USA

StatusPrivate

Product

Selected offerings — the AI products recorded here, not the vendor's full catalogue.

• Leadbay Application Sold on its own

  Lead discovery and qualification for sales teams: upload won and lost deals and Leadbay's model finds lookalike companies and contacts, scores them and keeps learning from likes and dislikes, with people, phone and email included, a CRM sync and an MCP server for use in Claude and ChatGPT; free, $100 and $400 per user per month, and enterprise.

Similar products 32

No sourced competitor yet: no filing, vendor document or measured-market report read so far names a rival for this company, so none is asserted. The companies below are the closest by what their products do.

How this list is ranked ↗

CClayLate-stageLeadbay and Clay both list sales outreach; Leadbay's scale not recorded.2 of 2 capabilitiesShared product typeCompareCConversicaUndisclosedLeadbay and Ignite both list sales outreach; scale not recorded for either; ships AI agent rather than the same layer.2 of 2 capabilitiesDifferent layerCompareZZoomInfoPublicLeadbay and GTM Workspace both list sales outreach; Leadbay's scale not recorded.2 of 2 capabilitiesShared product typeCompareTTIFINLate-stageLeadbay and TIFIN AMP both list sales outreach; Leadbay's scale not recorded.2 of 2 capabilitiesShared product typeCompareOOutreachLate-stageLeadbay and Outreach Omni Agent both list sales outreach; Leadbay's scale not recorded.2 of 2 capabilitiesShared product typeCompareIInstantlyUndisclosedLeadbay and Instantly CRM both list sales outreach; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareSSalesforcePublicLeadbay and Salesforce in Claude both list sales outreach; Leadbay's scale not recorded.2 of 2 capabilitiesShared product typeCompareLlemlistUndisclosedLeadbay and lemlist both list sales outreach; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareRRoxUndisclosedLeadbay and Rox Revenue Agents both list sales outreach; scale not recorded for either; ships AI agent rather than the same layer.2 of 2 capabilitiesDifferent layerCompareSSmartleadUndisclosedLeadbay and SmartDialer both list sales outreach; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareIitemUndisclosedLeadbay and item both list sales outreach; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareIAImagine AIUndisclosedLeadbay and Imagine AI content agent both list sales outreach; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareHHaptikAcquiredLeadbay and AI Lead Qualification Agent both list sales outreach; Leadbay's scale not recorded; Haptik is acquired, with no independent scale.1 of 2 capabilitiesShared product typeCompareAApollo.ioLate-stageLeadbay and Apollo both list sales outreach; Leadbay's scale not recorded.1 of 2 capabilitiesShared product typeCompareAAttioLate-stageLeadbay and Attio both list sales outreach; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareGGongUndisclosedLeadbay and Gong Engage both list sales outreach; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareZZoomPublicLeadbay and Zoom Revenue Accelerator both list sales outreach; Leadbay's scale not recorded.2 of 2 capabilitiesShared product typeCompareQQualifiedAcquiredLeadbay and Piper both list sales outreach; Leadbay's scale not recorded; Qualified is acquired, with no independent scale; ships AI agent rather than the same layer.1 of 2 capabilitiesDifferent layerCompareOOtter.aiUndisclosedLeadbay and Otter AI Sales Notetaker both list sales outreach; scale not recorded for either.1 of 2 capabilitiesShared product typeCompareHHubSpotPublicLeadbay and Smart CRM both list sales outreach; Leadbay's scale not recorded.2 of 2 capabilitiesShared product typeCompareBBrevoLate-stageLeadbay and Aura AI both list sales outreach; scale not recorded for either; ships AI agent rather than the same layer.2 of 2 capabilitiesDifferent layerCompare1111xEarly-stageLeadbay and Julian both list sales outreach; scale not recorded for either; ships AI agent rather than the same layer.1 of 2 capabilitiesDifferent layerCompareAArtisanUndisclosedLeadbay and Ava both list sales outreach; scale not recorded for either; ships AI agent rather than the same layer.1 of 2 capabilitiesDifferent layerCompareRRegie.aiEarly-stageLeadbay and RegieGO both list sales outreach; scale not recorded for either; ships AI agent rather than the same layer.1 of 2 capabilitiesDifferent layerCompareGGenesysUndisclosedLeadbay and Predictive Engagement both list sales outreach; Leadbay's scale not recorded; Genesys's scale not comparable: only a revenue estimate, no market cap or valuation.2 of 2 capabilitiesShared product typeCompareMmonday.comPublicLeadbay and monday CRM both list sales outreach; Leadbay's scale not recorded.1 of 2 capabilitiesShared product typeComparePPipedriveLate-stageLeadbay and LeadBooster both list sales outreach; Leadbay's scale not recorded.2 of 2 capabilitiesShared product typeCompareBABland AIEarly-stageLeadbay and Bland both list sales outreach; scale not recorded for either; ships API service and agent platform rather than the same layer.1 of 2 capabilitiesDifferent layerCompare0101.AIUndisclosedLeadbay and TopSales AI both list sales outreach; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareMMicrosoftPublicLeadbay and LinkedIn Sales Navigator both list sales outreach; Leadbay's scale not recorded.2 of 2 capabilitiesShared product typeCompareRARelevance AIEarly-stageLeadbay and Elli, the Enrichment Agent both list sales outreach; scale not recorded for either.2 of 2 capabilitiesShared product typeCompareMPMeta PlatformsPublicLeadbay and Meta Business Agent both list sales outreach; Leadbay's scale not recorded.1 of 2 capabilitiesShared product typeCompare

Closest alternatives are pairs a vendor page itself compares. Similar products are matched from what each product does; nothing in that group is asserted as a rivalry.

Sources

Stage, from total funding

Company disclosure · 18 Oct 2026 at least

Homepage news tile: "Announcing Leadbay's $4.3M Seed Round". A January 2025 company post is titled as an announcement of a fundraise in Europe but its body states no amount, so the figure is a floor.

Valuation

Not found · 18 Oct 2026

Pages read for this record state no valuation.

Founded

Not found · 18 Oct 2026

Pages read for this record state no founding year. Pages read: homepage, /terms-of-use, /legal-mentions, /privacy-policy, docs.leadbay.app, the company's Y Combinator profile (which gives a cohort season, not a founding year).

Public listing

Not found · 18 Oct 2026

No listing on the pages read; treated as private.

Description

Official documentation · 18 Oct 2026

Homepage: "Qualified leads for agentic workflows"; docs: "Leadbay predicts who will buy what you sell."

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