Liquid AI found the closed-form solution to liquid neural network neuron dynamics in 2022, resolving a mathematical problem for this class of differential equations that had remained open since 1907.
Hasani describes solving in closed form a class of differential equations modeling neuron dynamics that had lacked a known closed-form solution since Louis Lapicque's 1907 work, published as a Nature Machine Intelligence paper in 2022. ✦ AI generated
Ramin Hasani · The Cognitive Revolution · 2026-07-04 · original ↗
starts at this moment · 18:23
“So maybe for starters, how would you tell the kind of broad story of Liquid AI leading up to what you're doing today and what the company's mission is today?”
in this was like 2022 Around 2022, we solved the liquid neural network kind of interaction of neurons with each other in closed form for the first time. This became a nature machine intelligence paper uh published in November of 2022. This is called the closed form continuous time uh systems you know like this is this liquid neural networks in closed form
verbatim transcript · starts at 18:23
18:23liquid neural network kind of interaction of neurons with each other in closed form for the first time. This became a nature machine intelligence paper uh published in November of 2022. This is called the closed form continuous time uh systems you know like this is this liquid neural networks in closed form and uh the closed form I mean it has massive implications. Why? Because now I don't need to use any
18:44numerical solvers to actually run a liquid neural networks. I can now have not only hundreds of neurons but now I have I can have billions of neurons next to each other and I can actually scale these computation still keeping the nonlinearity as part of this thing you know then then in in January of act actually beginning of February of 2023 an article came out of a quantum magazine you know about let's
19:10say me and my co-founder Matias we um it was about a profile about like oh the implications of some having some close form solution finally on on on a on on neuron dynamics you know like and how important this can be for both machine learning and also like for brain science as a whole and then so my inbox was full of VCs you know Silicon Valley started
19:30like talk like everybody wanted to throw like a term sheet at us like to really get started and and really scale this technology because this was fundamentally different than a transformer-based architecture and attentionbased architecture this was grounded in biology like the type of math that we have around the same times we Alternative models are coming out like state space models like you know like like the you know like you've
19:52you've seen like faster iterations of state space models like convolutional neural networks that came out like to be like scalable all of them in a linear form because the scalability of alternative models you have to linearize them and then you can scale them you know and we have something here that is also another category you know like it adds some operators that we learned from biology and from physics as we we grew
20:14the research and we got to the point where we can now become very competitive and uh and and you know like building models like for solving more and more general purpose tasks and when I say more and more general purpose task I'm talking about modeling signals beyond predictive performance modeling signals for language for audio and for vision in a way that human humans understand right like that's the for that's the complex
- ·Liquid AI solved neuron-interaction dynamics in closed form
- ·First closed-form solution since Lapicque's 1907 model
- ·Problem stood open in this equation class for 115 years
- ·Published in Nature Machine Intelligence, November 2022
- ·Method termed 'closed-form continuous-time' systems
- ·Basis for liquid neural networks as built today