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Posts by Alex Irpan

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- Here is a photo of my family. I love them more than anything. Images have power, I hope. Normally we try to be pretty private, but in this case I am sharing a photo in the...

1. Obviously terrible to have a Molotov thrown against your house, not appropriate response.
2. Of all analogies to make, "ring of power" is a choice, given the story's theme that the only way to stop the ring's destructive power is to destroy it.

blog.samaltman.com/2279512

1 week ago 1 0 0 0
Alex's Enigmarch Registration for this year's Alex's Enigmarch is now open!

I did #enigmarch this year and am revealing all the puzzles in a one day event this Saturday! If you're free, come check it out

enigmarch.alexirpan.com

1 week ago 1 0 0 0
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Proposed Brief of Amici – #40, Att. #1 in Anthropic PBC v. U.S. Department of War (N.D. Cal., 3:26-cv-01996) – CourtListener.com Consent MOTION to File Amicus Curiae Brief filed by Former Service Secretaries and Retired Senior Military Officers. Responses due by 3/24/2026. Replies due by 3/31/2026. (Attachments: # 1 Proposed Br...

There is now another amicus brief filed by a number of former high ranking military officials (up to Admiral level), arguing these actions hurt the military's adherence to the rule of law.

storage.courtlistener.com/recap/gov.us...

1 month ago 0 1 0 0
Why I Signed The Amicus Brief for Anthropic v Department of War On Monday, Anthropic filed a lawsuit against the Department of War, and an amicus brief in support of Anthropic was filed on behalf of a number of OpenAI and Google employees. See coverage here and th...

www.alexirpan.com/2026/03/11/a...

1 month ago 2 0 1 0
MIT Mystery Hunt 2026 This has spoilers for MIT Mystery Hunt 2026. Spoilers are not labeled or hidden.

Here's my MIT Mystery Hunt post for the year

www.alexirpan.com/2026/01/29/m...

2 months ago 7 1 0 0
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Authentic Imperfection Auto-Tune is great.

I didn't know where this post was going when I started and I'm not sure where it went now that it ended, but that felt correct in some way.

www.alexirpan.com/2025/11/16/a...

5 months ago 3 0 0 0

First paper since switching into AI safety team🎉

We look at problems that could be solved if the model behaved consistently over a set of prompts, and tried training that in output space and internal activations. Both were effective. See thread or paper for details.

5 months ago 17 2 1 0
Ten Years Later My blog turns ten years old today. The big 1-0. Thanks for reading!

Today is my 10 year blogging anniversary.
www.alexirpan.com/2025/08/18/t...

8 months ago 6 0 0 0
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Brony Musicians Seize The Means of Production: My Eyewitness Account to BABSCon 2025 Bronies are older fans of My Little Pony: Friendship is Magic. They are mostly male, typically in 20s-30s age wise, and have been trending older and more female over time. (A lot of girls in the origi...

For the past month I have been working on a blog post about niche MLP fandom drama. Well here it is.

www.alexirpan.com/2025/07/21/b...

9 months ago 2 0 0 0
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"I don't play gacha games because they're a scam"
vs
"Let me do one more hyperparam sweep before giving up. One more prompt tuning run. I swear we'll beat baseline. I know it's gonna beat the baseline this time. It's gonna win. This time for sure."

10 months ago 3 0 0 0
Who is AI For? Who is AI for right now? There are obvious use cases. Image generation for people who want filler art for work presentations, or just to mess around. Coding assistance for people who code, vibe coding...

www.alexirpan.com/2025/04/01/w...

1 year ago 6 2 0 0
MIT Mystery Hunt 2025 This has spoilers for MIT Mystery Hunt 2025. Spoilers are not labeled or hidden.

My MIT Mystery Hunt post for the year

www.alexirpan.com/2025/01/28/m...

1 year ago 10 2 0 0

I am now back from #MITMysteryHunt with no memory of anything besides Hunt from MLK weekend. Really this is probably for the best.

1 year ago 7 0 0 0
Using AI to Get the Neopets Destruct-o-Match Avatar I have blogged about Neopets before, but a quick refresher. Neopets is a web game from the early 2000s, which recently celebrated its 25th anniversary and maintains a small audience of adult millennia...

It is time for more posts about Neopets

www.alexirpan.com/2025/01/09/d...

1 year ago 5 0 0 0

The ship has sailed, but I wish the ML reporting default was % incorrect rather than % correct. It better matches loss curves and magnifies the capture of edge cases.

95% accuracy -> 97.5% accuracy = meh
5% error -> 2.5% error = omg we've halved the error rate

1 year ago 9 0 0 0

The question of "how's o1 using its test compute" is better asked to someone who worked on it, since AFAIK that hasn't been disclosed. But yes, language models having really dynamic / freeform actions makes them hard to think about.

1 year ago 3 0 1 0
Late Takes on OpenAI o1 I realize how late this is, but I didn’t get a post out while o1 was fresh, and still feel like writing one despite it being cold. (Also, OpenAI just announced they’re going to ship new stuff starting...

I wrote some stuff on OpenAI o1

www.alexirpan.com/2024/12/04/l...

1 year ago 15 2 1 2
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