Ayush Kaushal

Ayush Kaushal

I study compute-efficient learning in systems that improve as they condition on more context: meta-training of in-context learners, continual pretraining, and scaling analysis that characterizes their behaviour.

I'm a PhD student at Mila and Université de Montréal, advised by Irina Rish. Previously, I co-founded Nolano, where my work focused on low-bit pretraining and inference for foundation models, including the Spectra suite of ternary language models (ICLR 2025 Spotlight) and its scaling-law follow-up (ACL 2025). I hold an MS from UT Austin and a B.Tech from IIT Kharagpur, and was a research intern at Google, where I worked on encoder architectures for streaming sequence tagging.

Research Timeline

  1. 2025–now

    Mila and Université de Montréal

    Developed MegaTabICL, an exact reimplementation of TabICLv2 pretraining with 3.86× lower stage-1 cost, and used it for, to our knowledge, the first billion-parameter compute-optimal scaling study of tabular foundation models.

  2. 2023–2026

    Nolano

    Implemented 4-bit LLaMA inference on CPU on top of ggml (March 2023). Proposed LoRD, one-shot low-rank decomposition for compressing code LLMs. Hi-NOLIN: English-Hindi continued pretraining of Pythia. Spectra: an open suite of ternary, quantized and FP16 language models trained on identical data, for controlled comparison of low-bit pretraining. TriTera (Spectra 1.1): scaling laws and inference kernels for ternary language models.

  3. 2022

    Google

    Proposed HEAR, a hybrid unidirectional-bidirectional encoder with adaptive restarts, which avoids re-encoding the full prefix at every new token in streaming sequence tagging.

  4. 2021–2023

    UT Austin

    Probed what subword embeddings encode about their constituent characters, and traced how pretraining induces that information.

  5. 2017–2021

    IIT Kharagpur

    Stance detection (NAACL 2021) and the causal direction of data collection in NLP (EMNLP 2021); contributed to JuliaText through Google Summer of Code.

Short CV

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Recent publications

A complete list is on Google Scholar.

* Equal contribution.

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