Jack O'Brien (@thejackobrien) / X

Jack O'Brien

1,641 posts

Jack O'Brien

@thejackobrien

Inference systems designed for agents - subconscious.dev Run GLM 5.2 3.5x faster w 1/2 the compute Prev: Exited founder | SWE @ Google | @TigerLacrosse

Boston, MA

Joined November 2017

Pinned
Jack O'Brien
@thejackobrien
Oct 10, 2024
In a few short years, only two skills will matter for software engineers: Taste and Tradeoffs All meaningful code used to be written by humans, but it's not anymore. Today, somewhere between 20-50% of code is generated by AI copilots, and in just a few years virtually all new
Jack O'Brien
@thejackobrien
Jun 20, 2023
Replying to @alexgraveley
And increased the collective productivity of coders by 2-3x, wild You are a legend though!
Jack O'Brien
@thejackobrien
Mar 31, 2022
3 Takeaways from the @vercel meetup in NYC - Vercel nails everything they do, including events - pnpm is sweet, how have I not heard of it before - @turborepo makes me wish I had a monorepo. Awesome seeing a live demo from @jaredpalmer, remote edge cached builds a wild idea
Jack O'Brien
@thejackobrien
Nov 15, 2022
Today, 2 months after launching on-platform-investing, we’re dropping carry (previously 10-20%) for all future investments to 0% We want more great founders funded, and more investors entering the game
Jack O'Brien
@thejackobrien
Jul 23, 2024
Just got off a great stream with 1,500 engineers for Headstarter's Software Engineering Fellowship. TONS of energy in that stream Excited to see what this group can do over the next 5 weeks, reach out if you want advice! Appreciate the opportunity as always @yasinbuilds 🤝
Jack O'Brien
@thejackobrien
May 14, 2024
We won $100k tonight! Great night with a fun twist to win the second 100k check at the last minute. Big thanks to @mit100k @MIT @FOUNDERorg The mission I believe in: decrease the impact of computing on the planet.
Jack O'Brien
@thejackobrien
Oct 7, 2021
Great night in NYC! Thanks @brexHQ @Work_Bench for hosting. #nycenterpriseparty
Jack O'Brien
@thejackobrien
Feb 1, 2022
Excited to announce that @OnePager_vc has been acquired by @stonks_dot_com! @ajh3_, @NicMahaney, and I have joined the team, and we couldn’t be happier about our decision. Why Stonks? A few reasons we're pumped:
Jack O'Brien
@thejackobrien
Feb 10, 2022
The circle of tech: - Work at Google - Leave Google to build @OnePager_vc - OnePager acq by @Stonks_dot_com - Stonks hosting an event for @XooglerCo tomorrow! 🤯 Pumped for the event @ChristopherFong !
Jack O'Brien
@thejackobrien
Sep 22, 2023
Talked through LowTech AI with @mit last night. Even in one of the most tech savvy places in the world, so few people use LLMs daily. Trying to help more people take advantage!
Jack O'Brien
@thejackobrien
Apr 15, 2024
We take 2nd place at the Cambridge @agihouse_org hackathon! We built an LLM inference optimization proxy to help companies reduce cost, latency, and computing related carbon emissions. Great time building with these guys 🥈
Jack O'Brien
@thejackobrien
Jun 12, 2023
After year and a half at Stonks, I’m moving on. I’ve spent 3.5+ years building products for founders and investors, big thanks to @ajh3_ and @NicMahaney for pulling me into the startup world away from big tech, and thanks to @ali_moiz and @john_at_stonks for believing in us
Jack O'Brien
@thejackobrien
Feb 12, 2024
Last week was my first week on the teaching staff for MIT's newest course "Generative AI for Managers" taught by @johnjhorton We're helping more people understand the origins of generative AI, how to take advantage of it, and where it's all headed
Jack O'Brien
@thejackobrien
Oct 4, 2024
Replying to @nutlope
Cool launch Hassan! I just launched the exact opposite app today - mailkiwi.com. Write in a prompt and get a postcard in the mail a week later!