Liquid Labs

Liquid Labs.

Research is a founding principle of Liquid AI. Our origins stem from over a decade of MIT research; where Liquid Neural Networks created efficient, multimodal architectures for our Liquid Foundation Models.

Liquid Labs carries this legacy forward as our dedicated team driving fundamental breakthroughs in the science of building intelligent, personalized, and adaptive machines.

  • An open benchmark and language models for AI in aging biology

    By Alex Zhavoronkov, Vladimir Naumov, Denis Sidorenko, Alex Aliper, Vladimir Aladinskiy, and 8 others

    We introduce LongevityBench, an open suite of 17 tasks spanning five biodata domains, and use it to assess 18 frontier AI systems from six developer teams.

  • In-Place Tokenizer Expansion for Pre-trained LLMs

    By Jimmy T.H. Smith, Tarek Dakhran, Alberto Cabrera, Simon S. Lee, Paul Pak, and 5 others

    New recipe expands pre-trained LLM tokenizers in place, cutting non-English token counts up to 4x with no quality loss.

  • Fixed-Point Reasoners: Stable and Adaptive Deep Looped Transformers

    By Sajad Movahedi, Vera Milovanović, Shlomo Libo Feigin, Alexander Theus, Thomas Hofmann, and 3 others

    FPRM is a Transformer-based Fixed-Point Reasoning Model for looped architectures, using pre-norm layers, residual scaling, and fixed-point halting to improve signal propagation, adapt compute to task difficulty, and deliver strong results on Sudoku, Maze, state-tracking, and ARC-AGI.

  • Neural Low-Discrepancy Sequences

    By Michael Etienne Van Huffel, Nathan Kirk, Makram Chahine, Daniela Rus, and T. Konstantin Rusch

    NeuroLDS introduces the first machine learning framework for finite low-discrepancy sequences, generating point sequences with low prefix discrepancy and outperforming classical LDS methods across numerical integration, robot motion planning, scientific machine learning, and simulation.

  • SwitchCraft: A Programmatic Framework for Designing State-Switching Proteins

    By Bowen Jing, Mihir Bafna, Anisha Parsan, Heyuan Michael Ni, David Kwabi-Addo, and 3 others

    SwitchCraft is a programmable framework for designing state-switching proteins using backpropagation through compositional constraints and structure prediction models, enabling allosteric regulation, ligand discrimination, and de novo fluorescent biosensor design for biotechnology.

  • MeMo: Model as a Memory

    By Ryan Wei Heng Quek, Sanghyuk Lee, Alfred Wei Lun Leong, Arun Verma, Alok Prakash, and 4 others

    MeMo (Memory as a Model) is a modular framework that adds timely, domain-specific knowledge to LLMs without changing model weights, capturing cross-document relationships, resisting retrieval noise, avoiding catastrophic forgetting, and supporting plug-and-play use with open and closed-source models.

  • Preconditioned delta-rule recurrences improve subquadratic long-context modeling by incorporating curvature from online least squares. The method links linear attention and the delta rule, introduces efficient variants of DeltaNet, GDN, and KDA, and boosts recall and language modeling performance.

  • Linear attention offers a computationally efficient yet expressive alternative to softmax attention, maintaining a recurrent state that functions as a linear associative memory. However, recent empirical results indicate that the associative memory of trained linear attention models often exhibits a low-rank structure, suggesting that these models underexploit their capacity in practice. To illuminate this phenomenon, we provide a theoretical analysis of the role of rank in linear attention, revealing that low effective rank can affect retrieval error by amplifying query noise, as well as poorly condition query gradients.

  • Low-Pass Flow Matching

    By Francesco M. Ruscio and T. Konstantin Rusch

    Flow Matching typically relies on white noise sources, a choice often misaligned with the power spectra of natural data, which tend to decay with frequency. To address this, we introduce , a variant of Flow Matching based on an operator-modulated interpolant. This formulation induces a time-varying spectral bias that transitions from the source spectrum to a frequency-decaying bias as the path approaches the data. We validate our method on unconditional image generation tasks, including the scientific Galaxy10 dataset. Empirically, we show that our method is particularly effective when paired with adaptive ODE solvers, where it improves or preserves sample quality while substantially reducing sampling cost compared to standard baselines.

  • AlphaQ: Calibration-Free Bit Allocation for Mixture-of-Experts Quantization

    By Wanqi Yang, Yuexiao Ma, Alexander Conzelmann, Xiawu Zheng, Michael W. Mahoney, and 2 others

    Mixture-of-Experts (MoE) architectures scale computation via sparse expert activations, yet they remain memory-bound because all expert weights must reside in memory. Mixed-precision quantization can substantially reduce this footprint, but existing quantization methods estimate expert importance and assign bits based on calibration data. For frontier MoE LLMs, however, the original training data (and thus its true training distribution) is proprietary and inaccessible. Thus, any calibration set is at best a surrogate and may yield a biased or incomplete view of expert utilization, leading to suboptimal bit allocation. To address these problems, we propose AlphaQ, a novel calibration-free bit-allocation method for MoE quantization.

  • Zero-Overhead Introspection for Adaptive Test-Time Compute

    By Rohin Manvi, Joey Hong, Tim Seyde, Maxime Labonne, Mathias Lechner, and 1 other

    Large language models excel at reasoning but lack key aspects of introspection, including the ability to anticipate their own success and the computation required to achieve it. Humans use real-time introspection to decide how much effort to invest, when to make multiple attempts, when to stop, and when to signal success or failure. Without this ability, LLMs struggle to make intelligent meta-cognition decisions. Test-time scaling methods such as Best-of-N drive up cost and latency by using a fixed budget of samples regardless of the marginal benefit of each one at any point in generation, and the absence of confidence signals can mislead people, prevent appropriate escalation to better tools, and undermine trustworthiness.

  • Learning residue level protein dynamics with multiscale Gaussians

    By Mihir Bafna, Bowen Jing, and Bonnie Berger

    Many methods have been developed to predict static protein structures, however understanding the dynamics of protein structure is essential for elucidating biological function. While molecular dynamics (MD) simulations remain the in silico gold standard, its high computational cost limits scalability. We present DynaProt, a lightweight, SE(3)-invariant framework that predicts rich descriptors of protein dynamics directly from static structures.

  • Antislop: A Comprehensive Framework for Identifying and Eliminating Repetitive Patterns in Language Models

    By Samuel J Paech, Allen G Roush, Judah Goldfeder, and Ravid Shwartz-Ziv

    Antislop detects and removes repetitive LLM “slop” using inference-time suppression, profiling, and targeted fine-tuning.

  • The Curious Case of In-Training Compression of State Space Models

    By Makram Chahine, Philipp Nazari, Daniela Rus, and T. Konstantin Rusch

    State Space Models (SSMs), developed to tackle long sequence modeling tasks efficiently, offer both parallelizable training and fast inference. At their core are recurrent dynamical systems that maintain a hidden state, with update costs scaling with the state dimension. A key design challenge is striking the right balance between maximizing expressivity and limiting this computational burden. Control theory, and more specifically Hankel singular value analysis, provides a potent framework for the measure of energy for each state, as well as the balanced truncation of the original system down to a smaller representation with performance guarantees.

  • LFM2 Technical Report

    By Alexander Amini, Anna Banaszak, Harold Benoit, Arthur Böök, Tarek Dakhran, and 28 others

    We present LFM2, a family of Liquid Foundation Models designed for efficient on-device deployment and strong task capabilities. Using hardware-in-the-loop architecture search under edge latency and memory constraints, we obtain a compact hybrid backbone that combines gated short convolutions with a small number of grouped query attention blocks, delivering up to 2x faster prefill and decode on CPUs compared to similarly sized models.

  • RL Squeezes, SFT Expands: A Comparative Study of Reasoning LLMs

    By Kohsei Matsutani, Shota Takashiro, Gouki Minegishi, Takeshi Kojima, Yusuke Iwasawa, and 1 other

    Large language models (LLMs) are typically trained by reinforcement learning (RL) with verifiable rewards (RLVR) and supervised fine-tuning (SFT) on reasoning traces to improve their reasoning abilities. However, how these methods shape reasoning capabilities remains largely elusive. Going beyond an accuracy-based investigation of how these two components sculpt the reasoning process, this paper introduces a novel analysis framework that quantifies reasoning paths and captures their qualitative changes under each training process (with models of 1.5B, 7B, and 14B parameters on mathematical domains).

  • Exploring Diffusion Transformer Designs via Grafting

    By Keshigeyan Chandrasegaran, Michael Poli, Daniel Y. Fu, Dongjun Kim, Lea M. Hadzic, and 7 others

    Grafting edits pretrained diffusion transformers into efficient hybrids using <2% compute, delivering strong quality and up to 1.43x speedups.

  • Quantifying Memory Utilization with Effective State-Size

    By Rom N. Parnichkun, Neehal Tumma, Armin W. Thomas, Alessandro Moro, Qi An, and 4 others

    Introducing effective state-size (ESS), a metric that quantifies memory utilization in sequence models to improve initialization and distillation.

  • STAR: Synthesis of Tailored Architectures

    By Armin W. Thomas, Rom Parnichkun, Alexander Amini, Stefano Massaroli, and Michael Poli

    STAR uses evolutionary search over architecture genomes to automatically design hybrids that beat Transformers on quality, size, and cache.

  • Towards a theory of learning dynamics in deep state space models

    By Jakub Smekal, Jimmy Smith, Michael Kleinman, Dan Biderman, and Scott Linderman

    Towards a theory of learning dynamics in deep state space models

  • The Empirical Impact of Neural Parameter Symmetries, or Lack Thereof

    By Derek Lim, Theo Putterman, Robin Walters, Haggai Maron, and Stefanie Jegelka

    The Empirical Impact of Neural Parameter Symmetries, or Lack Thereof

  • Large Scale Dataset Distillation with Domain Shift

    By Noel Loo, Alaa Maalouf, Ramin Hasani, Mathias Lechner, Alexander Amini, and 1 other

    Large Scale Dataset Distillation with Domain Shift

  • LLM and Simulation as Bilevel Optimizers: A New Paradigm to Advance Physical Scientific Discovery

    By Pingchuan Ma, Tsun-Hsuan Wang, Minghao Guo, Zhiqing Sun, Joshua B. Tenenbaum, and 3 others

    LLM and Simulation as Bilevel Optimizers: A New Paradigm to Advance Physical Scientific Discovery

  • RoboGen: Towards Unleashing Infinite Data for Automated Robot Learning via Generative Simulation

    By Yufei Wang, Zhou Xian, Feng Chen, Tsun-Hsuan Wang, Yian Wang, and 4 others

    RoboGen: Towards Unleashing Infinite Data for Automated Robot Learning via Generative Simulation

  • Position: Future Directions in the Theory of Graph Machine Learning

    By Christopher Morris, Fabrizio Frasca, Nadav Dym, Haggai Maron, Ismail Ilkan Ceylan, and 5 others

    Position: Future Directions in the Theory of Graph Machine Learning

  • Mechanistic Design and Scaling of Hybrid Architectures

    By Michael Poli, Armin W Thomas, Eric Nguyen, Pragaash Ponnusamy, Björn Deiseroth, and 7 others

    Mechanistic Design and Scaling of Hybrid Architectures

  • State-Free Inference of State-Space Models: The *Transfer Function* Approach

    By Rom Parnichkun, Stefano Massaroli, Alessandro Moro, Jimmy T.H. Smith, Ramin Hasani, and 8 others

    State-Free Inference of State-Space Models: The *Transfer Function* Approach

  • Growing Q-Networks: Solving Continuous Control Tasks with Adaptive Control Resolution

    By Tim Seyde, Peter Werner, Wilko Schwarting, Markus Wulfmeier, and Daniela Rus

    Growing Q-Networks: Solving Continuous Control Tasks with Adaptive Control Resolution

  • Understanding Reconstruction Attacks with the Neural Tangent Kernel and Dataset Distillation

    By Noel Loo, Ramin Hasani, Mathias Lechner, Alexander Amini, and Daniela Rus

    Understanding Reconstruction Attacks with the Neural Tangent Kernel and Dataset Distillation

  • Graph Metanetworks for Processing Diverse Neural Architectures

    By Derek Lim, Haggai Maron, Marc T. Law, Jonathan Lorraine, and James Lucas

    Graph Metanetworks for Processing Diverse Neural Architectures