Woojin Kim, MD

@woojinkim.com

CSO & CMIO @ HOPPR | CMO @ ACR DSI | MSK Radiologist | Imaging Informaticist | AI Enthusiast | Entrepreneur | AI artist | Travel Photographer. Posts are my own.

🚀 Many tell you to "learn AI," but the best way to learn is to actually use it. This year at #RSNA25, I'm giving a talk called "AI Made Fun: How Radiologists Can Practically Leverage Generative AI." 🗓 Tuesday, Dec 2, 2025 🕤 9:30 AM CST 📍 E353C 😉 I will also share my favorite AI tool with tips.

Bild

The Real Tech Stack Behind AI Startups: A 200-Company Analysis "Build cool products. Solve real problems. Use whatever tools work. Just don’t call your prompt engineering a 'proprietary neural architecture.'" pub.towardsai.net/i-reverse-en...

The Real Tech Stack Behind AI Startups: A 200-Company Analysis

Three weeks of network monitoring revealed the truth: 73% of funded AI startups are running $33M valuations on $1,200/month in OpenAI…

pub.towardsai.net

I tried OpenAI’s new Atlas browser but I still don’t know what it’s for "The real customer, the true end user of Atlas, is not the person browsing websites, it is the company collecting data about what and how that person is browsing." www.technologyreview.com/2025/10/27/1...

I tried OpenAI’s new Atlas browser but I still don’t know what it’s for

My impression is that it is little more than cynicism masquerading as software.

technologyreview.com

✨ In 2017, I gave my first lecture at #NIIC. This week, I'll be back to speak on "Generative and Agentic AI in Medical Imaging." 👥 NIIC has been part of my professional journey for nearly a decade, and it is my way of giving back to the field that has given me so much!

Bild

You can't eval GPT5 anymore — LessWrong "The GPT-5 API is aware of today's date (no other model provider does this)... Once the model knows that it is in a simulation, it starts questioning other parts of the simulation." www.lesswrong.com/posts/DLZokL...

You can't eval GPT5 anymore — LessWrong

The GPT-5 API is aware of today's date (no other model provider does this). This is problematic because the model becomes aware that it is in a simul…

lesswrong.com

Silicon Valley’s AI deals are creating zombie startups: ‘You hollowed out the organization’ "...it’s a trend that threatens to thwart innovation as founders abandon their ambitious projects to work for the biggest companies in the world." www.cnbc.com/2025/08/19/h...

Silicon Valley's AI deals are creating zombie startups: 'You hollowed out the organization'

Unable to make big AI purchases because of regulatory hurdles, tech giants have spent billions to buy top talent from startups, leaving behind shell companies.

cnbc.com