I build internet stuff @sprintapp. Previously creative director of @stripe, original designer of @openai, and founder of @quillchat.
NYC
Joined March 2008
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Small @sprintapp detail
Initial network, first token, tool calls & completion.
using the (just-added!) graph view!
Have been excitedly using Sprint for the past couple months and there is something absolutely wild about being able to rapidly iterate on design ideas/concepts and cross-reference objects/styles/themes across projects to create cross-talk across efforts.
Here I'm trying to make Concorde-themed posters for my son and hammering the models to get it ~just so!
Been working on something new: @sprintapp
It’s my take on working with image and video models on a canvas, and we already have teams using it for ~all of their imagery
sprint.app
I'd really prefer not to build this myself, yet I'd love a simple TUI style chat app (irc but in 2026) as I find the (lack of) information density in today's chat apps to be very poor
sprinkle some agent stuff and bish bash bosh bet you'll have a growing product
If you're doing AI imagery/video, and at ~this level of output (or want to!), I'd love to have you test something I've been building -- send me a dm!
I was able to remove 90% of my deterministic guard rails, all my pre-loop classifiers, and reduce my system prompt by ~30% moving from GPT 5.4 -> 5.5. (tbf it had built up a lot of cruft 5.4 probably didn't need)
5.5 did it itself over ~8 hours total (never had anything run this long before! 3-4 sessions, mostly unattended), then it took me 2-3 hours to review and clean up. Would've taken me ~2 weeks on my own, probably.