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CustomerOS
DefunctYC S22London, GB · Founded 2021 · 10 employees · 7 known investors
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CustomerOS is a B2B marketing platform powered by AI agents that identifies target prospects, analyzes pipeline data, and optimizes marketing spend to drive revenue. It serves strategic marketers seeking pipeline visibility and data-driven campaign optimization.
Also known as Openline Technologies Inc. · Openline
AI & Machine LearningEnterprise SoftwareMarketing TechSaaSSales TechB2BSalesMarketingAdvertisingAIUnited KingdomEuropeFully Remote
Founders & leadership· Y Combinator alumni (S22)
CustomerOS was founded in 2021 by Matt Brown, Vasi Coscotin, and Jonty Knox.
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Matt BrownCo-founder · CEO2022–2026Matt Brown previously held VP of Product roles at Voxbone and Prove, and co-founded and led Tengo Inc., a fintech platform. Voxbone was acquired by Bandwidth in 2020.
VC
Vasi CoscotinCo-founder & CTO2022–2024Vasi has spent over a decade designing distributed systems and managing engineering teams across multiple regions. After initial work in education software and two failed startup ventures, he spent seven years at Voxbone scaling infrastructure and technical teams to support the company's growth into a global communications network serving major platforms.
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Jonty KnoxCo-Founder and CPO2022–2025Jonty Knox previously held roles at Huawei managing enterprise contracts, co-founded Voxbone (acquired by Bandwidth for $500M+), and advised fintech startup Otto. He is now founding CustomerOS.
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Antoine ValotHead of UXuntil 2026
Investors · 7
Y Combinatorlisted by Y CombinatorSan Francisco · $500K
How we know: the Y Combinator directory · open dataset · 5k.vc investor directory · Not right? Tell us
CocoareportedLondon
How we know: Y Combinator's founder network · Not right? Tell us
Crane Venture PartnersreportedLondon · $750K – $3M
How we know: Y Combinator's founder network · Not right? Tell us
Latam Venture CapitalreportedWilmington
How we know: Y Combinator's founder network · Not right? Tell us
SeedcampreportedLondon · $378K – $1.1M
How we know: Y Combinator's founder network · Not right? Tell us
Sequoia CapitalreportedMenlo Park · $100K – $50M
How we know: Y Combinator's founder network · Not right? Tell us
Thomas Jamesreported
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Founder mafia
2 people who came through CustomerOS went on to found or lead other companies.
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Companies working in the same space as CustomerOS.
Legal entities · 1
corporate structureOpenline Technologies Inc.
In the news
Frequently asked questions
- What does CustomerOS do?
- CustomerOS is a B2B marketing platform powered by AI agents that identifies target prospects, analyzes pipeline data, and optimizes marketing spend to drive revenue. It serves strategic marketers seeking pipeline visibility and data-driven campaign optimization.
- Who founded CustomerOS?
- CustomerOS was founded by Matt Brown, Vasi Coscotin, Jonty Knox in 2021.
- Who are CustomerOS's investors?
- CustomerOS's investors include Y Combinator, Cocoa, Crane Venture Partners, Latam Venture Capital, Seedcamp, Sequoia Capital, Thomas James.
- Where is CustomerOS headquartered?
- CustomerOS is headquartered in London, GB.