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Liquid AI's early, highly effective non-linear models faced a major scaling bottleneck. Non-linear relationships are difficult to "tensorize"—convert from sequential to parallel computations—which is essential for GPU efficiency. This is why linear systems like state-space models scale more easily.

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AI model capabilities follow a predictable, non-linear scaling law: increasing training compute by 10x roughly doubles a model's capabilities. This exponential relationship, rather than an incremental one, is what will drive underappreciated and disruptive advancements across many industries.

The relationship between computing power and AI model capability is not linear. According to established 'scaling laws,' a tenfold increase in the compute used for training large language models (LLMs) results in roughly a doubling of the model's capabilities, highlighting the immense resources required for incremental progress.

The plateauing performance-per-watt of GPUs suggests that simply scaling current matrix multiplication-heavy architectures is unsustainable. This hardware limitation may necessitate research into new computational primitives and neural network designs built for large-scale distributed systems, not single devices.

As AI models scale, their optimal architecture changes. Smaller models benefit from architectural "biases" like gating for efficiency. However, at massive scale (trillions of parameters), unstructured architectures like Transformers, which rely on simple matrix multiplication, become superior because they scale with fewer constraints.

The history of AI, such as the 2012 AlexNet breakthrough, demonstrates that scaling compute and data on simpler, older algorithms often yields greater advances than designing intricate new ones. This "bitter lesson" suggests prioritizing scalability over algorithmic complexity for future progress.

Simply "scaling up" (adding more GPUs to one model instance) hits a performance ceiling due to hardware and algorithmic limits. True large-scale inference requires "scaling out" (duplicating instances), creating a new systems problem of managing and optimizing across a distributed fleet.

Current AI models become exponentially more expensive as input size grows (quadratic scaling). New "subquadratic" architectures, however, scale linearly by pre-selecting relevant data. This change could slash compute costs by orders of magnitude, making massive context windows economically viable.

A major breakthrough for Liquid AI was finding a closed-form solution for the differential equations governing their neural networks, a problem unsolved since 1907. This eliminated the need for slow, step-by-step numerical solvers, enabling a massive leap in scalability from hundreds to potentially billions of neurons.

The market often misinterprets AI progress as linear. However, a clear 'scaling law' dictates that a tenfold increase in the computing power used to train LLMs results in a twofold capability improvement. This exponential relationship means future advancements will be far more disruptive and surprising than incremental projections suggest.

Unlike traditional computing where inputs were standardized, LLMs handle requests of varying lengths and produce outputs of non-deterministic duration. This unpredictability creates massive scheduling and memory management challenges on GPUs that were not designed for such chaotic, real-time workloads.

Scaling AI Hits a Wall with Nonlinear Systems That Resist Parallelization | RiffOn