AI People Wiki

Builders & open source

Mark R. Florkowski

Co-founder and Chief Technology Officer, T3 Chat

Mark R. Florkowski is a co-founder and the chief technology officer of Ping Labs, which makes developer and AI tools including T3 Chat, T3 Code and UploadThing. Ping Labs' site credits its software to Theo, Mark and Julius, and Y Combinator's company page lists Florkowski as Founder and CTO. Before Ping Labs, Florkowski worked as a support engineer at Retool.123

At a glance

Current role
Co-founder and Chief Technology Officer
Company
T3 Chat
Sector
Company
Work listed
1
Sources cited
4
Profile reviewed

Ping Labs

Florkowski co-founded Ping Labs, which went through Y Combinator's Winter 2022 batch. The company's products include T3 Chat, an AI chat app; UploadThing, file uploads for full-stack developers; PicThing, background removal for content creators; and Ping.gg, live collaboration for streamers and podcasters. Ping Labs also makes T3 Code, an open-source, MIT-licensed control plane for coding agents.21

Y Combinator's company page lists Theo Browne as founder and CEO and Florkowski as founder and CTO. Earlier, Florkowski was a support engineer at Retool, and Florkowski's site lists contributions to projects including react.dev, AutoAnimate, Astro and UploadThing.23

Work and contributions

  • UploadThing Open-source code

    Florkowski's site lists UploadThing, Ping Labs' public file upload repository for full-stack developers, among projects Florkowski contributed to, and Florkowski's GitHub profile pins it.342

Timeline

  1. Co-founded the company that Y Combinator lists as founded in 2021, now Ping Labs.2
  2. Took part in Y Combinator's Winter 2022 batch with Ping Labs.2

Other documented roles

Roles the sources document that are not confirmed as current.

  • Support Engineer, Retool23

Where they work

Suggest a correction or removal

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References

4 sources · profile reviewed Oct 22, 2026 · data updated Oct 22, 2026

  1. Ping Labs — homepagePing Labs · Official page · accessed Oct 22, 2026
  2. T3 Chat (Ping Labs) — Y Combinator company page, active foundersY Combinator · Official page · accessed Oct 22, 2026
  3. Mark R. Florkowski — personal siteMark R. Florkowski · Official page · accessed Oct 22, 2026
  4. markflorkowski (Mark R. Florkowski) on GitHubGitHub · Official page · accessed Oct 22, 2026