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Leon
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@iamleonli

Leon

@iamleonli
PhD @nyuniversity | Researcher @modal Prev @Columbia
leonlixyz.github.io
Joined July 2024
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  • Pinned
    @iamleonli
    Leon
    @iamleonli
    Jul 20
    Scaling laws have transformed how we understand pretraining, and recent work has begun to characterize scaling in RL. But these stages are almost always studied in isolation. Can we study pretraining and RL jointly, and derive a unified scaling law for the full pipeline? 🧵
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  • @iamleonli
    Leon
    @iamleonli
    Jun 18
    Most AI benchmarks still don’t capture truly long-horizon agentic tasks. CEO bench directly fills this gap.
    @tonychenxyz
    Tony Chen
    @tonychenxyz
    Jun 18
    Today, agents execute isolated tasks. Tomorrow, agents will steer complex decisions across long horizons. Introducing CEO-Bench, a first step to measure "Steering Intelligence." In CEO-Bench, agents are asked to run a simulated startup for 500 days. ceobench.com
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  • @iamleonli
    Leon
    @iamleonli
    Jun 9
    How far can we compress the discrete tokens in an LLM's context into compact latent vectors? With the right training recipe at large scale, our Latent Context Language Models (LCLMs) compress context up to 16× and land on a new Pareto frontier for long-context inference. 🧵(1/n)
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    1
  • @iamleonli
    Leon
    @iamleonli
    Jul 23, 2025
    CoT transformed text reasoning. What about multimodal? 🤔 Check out our new dataset of interleaved text and image reasoning traces. We also show interesting visual CoT examples generated inherently by the model finetuned on our dataset!
    @micahgoldblum
    Micah Goldblum
    @micahgoldblum
    Jul 23, 2025
    🚨Announcing Zebra-CoT, a large-scale dataset of high quality interleaved image-text reasoning traces 📜. Humans often draw visual aids like diagrams when solving problems, but existing VLMs reason mostly in pure text. 1/n
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  • @iamleonli
    Leon
    @iamleonli
    Apr 17, 2025
    Well deserved!
    @tonychenxyz
    Tony Chen
    @tonychenxyz
    Apr 16, 2025
    Life update: I’ll be joining @PrincetonCS as a PhD student starting fall 2025! It was a very very difficult decision. I enjoyed people I talked to and their research at every place. My biggest thank you to everyone who has helped me along the journey! Excited for what’s to come!
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