Alex Lupsasca

Research Scientist @OpenAI & Assistant Professor @VanderbiltU. Black holes, photon rings, gravity & beyond. Formerly @Harvard and @Princeton.

[Sebastien Bubeck @SebastienBubeck]

GPT-5.5 (the one available right now to everyone) can also disprove the sum-product conjecture: https://t.co/gdHwLY3o20 . I didn't reveal it before because I think it is good to give some space to the community to absorb these new capabilities. In particular the humans involved in the discovery should get all the credit for this amazing breakthrough. We all have some work to do to align on cultural norms in this new world.

[Tibo @thsottiaux]

It’s time to fly!

Excited to share the first short brand film for Codex. Catch it airing during Game 1 of the NBA Finals tonight.

https://t.co/1J4Epczj8T

[OpenAI @OpenAI]

AI can give researchers the freedom to pursue “crazier” ideas.

For Terence Tao, AI creates more room to experiment, test unexpected paths, and discover what might otherwise stay out of reach.

[Cognition @cognition]

1/ We’ve raised over $1B at a $26B valuation, led by @Lux_Capital, @generalcatalyst, and @8vc.

Our enterprise usage has grown >10x since the start of this year, and our run-rate revenue grew to $492 M.

We launched Devin two years ago as the first AI software engineer. Since then, cloud agents have gone from niche to mainstream, and today they are the fastest growing way to create software.

[Sebastien Bubeck @SebastienBubeck]

We now know that with an appropriate harness both Mythos and GPT-5.5 can reproduce what our internal model did in one-shot for the unit distance problem. Clearly there is an insane overhang of capabilities with this generation of models, and no ceiling in sight for what scientific advances they can bring. You can go and try to discover new things with 5.5 right now!

[Alex Lupsasca @ALupsasca]

I recently joined @latentspacepod to talk about AI for physics.

We dug into recent work on scattering amplitudes with GPT, and what it suggests about how AI will accelerate theoretical discovery in a rapidly evolving field.

[Latent.Space @latentspacepod]

🔬Doing Vibe Physics

The full story of how GPT‑5.x derived new results in theoretical physics and quantum gravity, live on our Science pod today!

https://t.co/WHnPyH7K7K

our conversation with @ALupsasca, an award winning theoretical physicist on his AGI-pilling journey applying GPT5 to physics problems (with a nudge from @markchen90)!

Timestamps
0:00 Introduction to Al's impact on physics research
0:43 Guest introduction: Alex Luposka
2:49 Alex joining OpenAl and the shift in physics research
4:08 The release of GPT-5 and the shift in capabilities
10:05 Explaining Quantum Field Theory and amplitude calculations
14:20 Overview of gluons and the strong force
14:38 Discussing the first research paper on single-minus gluon tree amplitudes
20:56 How ChatGPT helped solve a year-long physics puzzle
23:02 Complexity of manual calculations in physics
26:12 The history and mechanics of Feynman diagrams
27:44 The Parke-Taylor formula and the quest for simplification
31:26 Using ChatGPT to find the simplification in the special phase space region
38:07 Proving the formula from scratch to ensure validity
41:00 Determining the scientific impact and future research
42:27 Introduction to the second paper on graviton amplitudes
45:41 |
Defining particles, irreducible representations, and symmetry
47:46 How GPT Pro generalized the research to gravity
53:57 The epistemological shift: Is this a new way of doing physics?
59:27 The use of Al as a 'scout' for research directions
1:01:44 The role of 'taste' and collaboration with Al
1:10:23 Personal evolution from Al skeptic to resident scientist
1:12:46 Solving a black hole perturbation problem with GPT-5
1:16:34 Discussing whether Al can make original, conceptual leaps
1:20:09 Challenges of 'Al slop' and the future of academic publishing
1:23:13 The bottleneck of writing academic papers
1:30:19 Final takeaways and looking ahead to the next year

[Timothy Gowers @wtgowers @wtgowers]

I've recently got in on the act of getting AI to solve open problems in mathematics. More precisely, I gave some questions asked by Melvyn Nathanson to ChatGPT 5.5 Pro, to which I have been given access, and it answered them. 🧵

[Sebastien Bubeck @SebastienBubeck]

GPT-5.5, not fully saturating the TikZ unicorn test yet but getting awfully close ...

(yes this is actual TikZ code, I personally find it so unbelievable that I'm putting the code below for anyone to verify for themself)

[Mehtaab Sawhney @mehtaab_sawhney]

We’ve just released another paper solving five further Erdős problems with an internal model at OpenAI: https://t.co/hKzrQbxdKX.

Several of the proofs were especially enjoyable to digest while writing the paper. My personal favorite was the solution to Erdős Problem 1091. The question asks: if a graph G has chromatic number 4, while every small subgraph has chromatic number at most 3, must it contain an odd cycle with many diagonals? The internal model gives a very enlightening counterexample to this conjecture, and the proof was a pleasure to understand.

For those so inclined, a really fun exercise is to try to reconstruct the proof from Figure 5 of the paper, which was of course produced by Codex.

[Alex Lupsasca @ALupsasca]

@stringking42069 The single-minus graviton paper was done using the publicly available pro version of GPT. We shared one of the main prompts on the OpenAI website.

[Alex Lupsasca @ALupsasca]

The talk is free but registration is required:

https://t.co/7IY0RL91AB

In the meantime, you can find out more about the Black Hole Explorer mission here:

https://t.co/RQDy8w2sre

[Alex Lupsasca @ALupsasca]

Interested in the future of black hole imaging?

I will be giving a public talk in NYC next week on Wednesday (3/18) about "The Black Hole Explorer: Tracing an Edge of the Visible Universe".

This is part of the Simons Presidential Lecture series hosted by the Simons Foundation.

[The Economist @TheEconomist]

It is blurring the line between tool and collaborator https://t.co/MOKYPMD3LG

[Alex Lupsasca @ALupsasca]

@SebastienBubeck That is one pretty unicorn

[Alex Lupsasca @ALupsasca]

@marikgoldstein Thank you for your interest! My upcoming public talk at the Simons Foundation (https://t.co/7IY0RL91AB) will be focused on the future of space-based black hole imaging with the Black Hole Explorer (https://t.co/KO98uR9weC)

[Alex Lupsasca @ALupsasca]

We just posted a new preprint: “Single-minus graviton tree amplitudes are nonzero.”

Yes: a helicity sector long assumed to vanish in quantum gravity can actually appear under well-defined kinematics. Preprint: https://t.co/viXPqiwhgF

[Alex Lupsasca @ALupsasca]

@bigwersk @grok I should have also shared this blog post with an explanation in layman's terms: https://t.co/rnehpIR8Ma

[Kevin Weil 🇺🇸 @kevinweil]

💥 AI accelerating high energy physics

Just a few weeks after the gluon scattering paper, this morning we posted the more complicated graviton scattering analogue. See below for more from @ALupsasca 👇

[Alex Lupsasca @ALupsasca]

Takeaway: this is strong evidence that AI can push the frontier of theoretical physics—and, even more importantly, that it compresses the discovery cycle by shifting effort toward checking and exposition!

Lots more to come; feedback welcome in the meantime!

[Alex Lupsasca @ALupsasca]

We’re sharing the receipts: a long chat transcript of the initial exchange that generated the core ideas and an early draft. Transcript: https://t.co/ip2HmHau8W.