Fundraising Fox

Charles Weill

Founder

Founder at CreatorML

New York, New York, United States

FoundedCreatorML · YC

About

Charles Weill previously worked in machine learning research at Google AI. He founded CreatorML, which applies machine learning to help content creators optimize video performance through data-driven recommendations on ideation, titling, and thumbnails.

Founder at CreatorMLYC W23

Intro paths

YC

Charles went through Y Combinator (Winter 2023) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Jared Friedman, YC Group Partner — the partner who ran CreatorML's batch and knows the company first-hand. YC profile ↗

→

In turn, Charles can intro founders to CreatorML's investors below.

CreatorML's investors · 3

Amino CapitalPalo Alto · $100K – $10M checksGoodwater CapitalBurlingame · $5M – $50M checksY CombinatorSan Francisco · $500K checks · since 2023

Experience

  1. xAIMember of Technical Staff2026Palo Alto, CA
  2. CreatorML (YC W23)Founder2022 — 2025Manhattan, New York, United States
  3. GoogleSenior Research Engineer2015 — 2021Manhattan, NY

Skills & more

PyTorch1Rust (Programming Language)YouTube1YouTube AnalyticsTensorflow1Python5C++C1GitPython (Programming Language)1Kubernetes1Large Language Models (LLM)
+12 moreStartupsAutomated Machine Learning (AutoML)Predictive AnalyticsMachine LearningDistributed SystemsArtificial IntelligenceBig DataNumPyGoDeep LearningNeural NetworksArtificial Intelligence (AI)

Languages English · French

From Charles's professional profile.

Frequently asked questions

Who is Charles Weill?
Charles Weill previously worked in machine learning research at Google AI. He founded CreatorML, which applies machine learning to help content creators optimize video performance through data-driven recommendations on ideation, titling, and thumbnails.
Where does Charles Weill work?
Charles Weill is Founder of CreatorML.
What companies did Charles Weill found?
Charles Weill founded CreatorML.
Where did Charles Weill go to school?
Charles Weill studied at Y Combinator (YC W23 Founder); Cornell University (Master of Engineering (M.Eng.), Computer Science); Cornell University (Bachelor of Science (B.S.) Summa Cum Laude).

Founder mafias

Y Combinator mafia9,496

Also came through, then founded or led a company.

Sam AltmanPresidentFounded Tools for Humanity +3Garry TanPresident & CEOFounded Y Combinator +1Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianYC Summer 2005Founded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded Hotspots

+ 9,489 more

Y Combinator mafia5,145

Also came through, then founded or led a company.

Ryan SheaEntrepreneurshipFounded StacksTarek MansourFounded KalshiSuhail DoshiEating beans & riceFounded Playground +1Subomi OluwalanaW22Founded ConvoyGleb ChuvpiloAlumFounded Pager +4IanFounded Apex Technology +3

+ 5,138 more

Cornell University mafia326

Also came through, then founded or led a company.

John ZimmerBSFounded Lyft +1Hanson S. Gifford, IIIBSMEFounded Miramar Labs +2Ian JanickiBachelors of ArchitectureFounded Outfit +2Ryan XueBachelor of Science (B.Sc.)Founded Andco +2Don MuirDyson School of BusinessFounded Arc +2Uri LopatinBAFounded Pardes Biosciences +1

+ 319 more

Same school

Also attended Y Combinator2,000

Ryan SheaCo-founder of Blockstack (Stacks)Suhail DoshiFounder of Mixpanel; founder of ParticleArhaan A.Deeptech Fellow at Clear VenturesAkshat GoenkaInvestor at Moonfire VenturesJon XuGeneral Partner at Y CombinatorChris GoldaGeneral Partner at Y Combinator

+ 1,994 more

Also attended Cornell University1,010

Doug LeonePartner at Sequoia Capital; former Global Managing PartnerJenny LeeSenior Managing Partner at Granite AsiaNeeraj AgrawalGeneral Partner at Battery VenturesJohn ZimmerCo-founder of LyftMichelle FernandesInvestor at Index VenturesMike ZakInvestor at CRV (Charles River Ventures)

+ 1,004 more

Shared employers

Also worked at xAI34

Michael TruellCo-founder & CEO of CursorMichael RobinsonInvestor at Craft VenturesTarek WakedCo-Founder & Managing Partner at Type One VenturesRandy GleinFounder and Managing Partner at DFJRay ChengManaging Partner at Millennium New HorizonsJay ChongManaging Partner at Millennium New Horizons

+ 28 more

Also worked at Google2,000

Elad GilSolo general partner investing through Gil CapitalKai-Fu LeeChairman of Sinovation Ventures and CEO of 01.AIBrian SingermanCo-founder of GPx; Partner Emeritus at Founders FundJess LeePartner and Chief Product Officer at Sequoia CapitalTomasz TunguzFounder & General Partner at Theory VenturesHunter WalkCo-founder & Partner at Homebrew

+ 1,994 more