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Sweep

YC S23

San Francisco, US · Founded 2023 · 4 employees · Hiring · 9 known investors

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Sweep builds AI coding tools for JetBrains users, including autocomplete and agent features with an emphasis on speed, accuracy, and privacy. The company operates its own models to deliver a secure AI coding experience.

Also known as Sweep AI, Inc.

AI & Machine LearningDeveloper ToolsEnterprise SoftwareArtificial IntelligenceAI AssistantUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (S23)

Sweep was founded in 2023 by William Zeng and Kevin Lu.

WZWilliam Zeng
William ZengFounderWilliam Zeng previously worked as a machine learning engineer at Roblox, where he contributed to search ranking improvements. He studied statistics and machine learning at Carnegie Mellon University and is now building Sweep, an IDE extension for JetBrains.
KLKevin Lu
Kevin LuFounderKevin Lu studied computer science at University of Waterloo and worked at Roblox developing machine learning models for avatar generation, as well as conducting NLP research on common sense reasoning. He is now building AI-powered developer tools focused on code generation.
NR
Nicolas RaspalFounder
RD
Rachel DelacourFounder
RG
Raphael GüllerFounder
SD
Samip DahalFounder
YC
Yannick ChazeFounder

Investors · 9

Agrolimen Venturesreported

How we know: Y Combinator's founder network · Not right? Tell us

Balderton CapitalreportedLondon · $5M – $50M

How we know: open dataset · 5k.vc investor directory · Not right? Tell us

Bessemer Venture PartnersreportedSan Francisco · $50K – $100M

How we know: open dataset · 5k.vc investor directory · Not right? Tell us

Clocktower VenturesreportedSanta Monica · $100K – $20M

How we know: open dataset · 5k.vc investor directory · Not right? Tell us

Exceptional CapitalreportedSan Francisco · $100K – $1M

How we know: Y Combinator's founder network · Not right? Tell us

Goodwater CapitalreportedBurlingame · $5M – $50M

How we know: Y Combinator's founder network · Not right? Tell us

Insight PartnersreportedNew York · $120M – $350M

How we know: funding news · insightpartners.com · open dataset · 5k.vc investor directory · Not right? Tell us

PioneerreportedToronto, Ontario

How we know: Y Combinator's founder network · Not right? Tell us

Funding

SEC filings, press & company announcements

$22.5M disclosed across 1 of 3 rounds · 2022–2025

Source: company announcements and press reports — follow each round's link for the claim.

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Companies working in the same space as Sweep.

Legal entities · 1

corporate structure
Sweep AI, Inc.

In the news

🧹 Sweep: Cursor Tab for JetBrains IDEsycombinator.com · Nov 2025Sweep: JetBrains AI Coding Assistantycombinator.com · Mar 2025Sweep aims to automate basic dev tasks using large language models | TechCrunchtechcrunch.com · Nov 2023

Frequently asked questions

What does Sweep do?
Sweep builds AI coding tools for JetBrains users, including autocomplete and agent features with an emphasis on speed, accuracy, and privacy. The company operates its own models to deliver a secure AI coding experience.
Who founded Sweep?
Sweep was founded by William Zeng, Kevin Lu in 2023.
Who are Sweep's investors?
Sweep's investors include Y Combinator, Agrolimen Ventures, Balderton Capital, Bessemer Venture Partners, Clocktower Ventures, Exceptional Capital, Goodwater Capital, Insight Partners and 1 more.
How much funding has Sweep raised?
Sweep has disclosed $22.5M raised across 1 of its 3 known rounds.
Where is Sweep headquartered?
Sweep is headquartered in San Francisco, US.