I'm an AI researcher at Meta Superintelligence Labs based in the Bay Area. My published work focuses on NLP, LLMs, and evaluation.

I've been working in NLP and deep learning since 2015. I started at Google Research on generative LSTMs for the Google Assistant with projects spanning architecture research, model infra, data generation, and evals. After six years, I joined Predibase (now part of Rubrik), where I led the ML team building an enterprise platform for post-training LLMs.

Outside of tech, I enjoy CrossFit and discovering new food spots. I also play the cello, run a sheet music store, and compete in basketball. I have founded two music ensembles: String Theory and Columbia Pops.

Justin Zhao
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Technical Work

Language Model Council: Democratically Benchmarking Foundation Models on Highly Subjective Tasks
March 2025 · NAACL
Justin Zhao, Flor Miriam Plaza-del-Arco, Amanda Cercas Curry
Nominated for best paper
LoRA Land: 310 Fine-tuned LLMs that Rival GPT-4, A Technical Report
May 2024
Justin Zhao, Timothy Wang, Wael Abid, Geoffrey Angus, Arnav Garg, Jeffery Kinnison, Alex Sherstinsky, Piero Molino, Travis Addair, Devvret Rishi
LLM Distillation Playbook
December 2023
Justin Zhao, Wael Abid
600+ GitHub stars
CLSE: Corpus of Linguistically Significant Entities
December 2022 · EMNLP
Justin Zhao*, Aleksandr Chuklin*, Mihir Kale
Ludwig AutoML for Text Classification
May 2022
Anne Holler, Justin Zhao, Avanika Narayan, Travis Addair, Devvret Rishi, Piero Molino
Ludwig AutoML for Deep Learning
February 2022
Anne Holler, Avanika Narayan, Justin Zhao, Shreya Rajpal, Daniel Treiman, Devvret Rishi, Travis Addair, Piero Molino
Using Machine Translation to Localize Task Oriented NLG Output
July 2021
Scott Roy, Cliff Brunk, Kyu-Young Kim, Justin Zhao, Markus Freitag, Mihir Kale, Gagan Bansal, Sidharth Mudgal, Chris Varano
Natural Language Generation at Google Research
October 2017 · Talk
Justin Zhao, Yufeng Guo
100K+ views