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189 followers · 61 following

Achievements

Achievement: Starstruckx2Achievement: Pull Sharkx3Achievement: Pair Extraordinairex3Achievement: YOLOAchievement: QuickdrawAchievement: Arctic Code Vault Contributor

Achievements

Achievement: Starstruckx2Achievement: Pull Sharkx3Achievement: Pair Extraordinairex3Achievement: YOLOAchievement: QuickdrawAchievement: Arctic Code Vault Contributor

Organizations

@KEEER @leann-ai

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andylizf/README.md

Zhifei Li

Incoming CS PhD student at Princeton (Fall 2026), advised by Tri Dao and Ravi Netravali. Previously a visiting student researcher at UC Berkeley's Sky Computing Lab with Ion Stoica. B.S. from Renmin University of China.

I work broadly on machine learning systems, with interests in efficient infrastructure, training and inference systems, and the design of systems for emerging AI workloads.

Papers

  • SkyNomad: On Using Multi-Region Spot Instances to Minimize AI Batch Job Cost. NSDI '27.
  • LEANN: A Low-Storage Vector Index for Personal Devices. MLSys '26, Best Paper Award.
  • FrontierCS: Evolving Challenges for Evolving Intelligence. ICML '26.
  • PixelRAG: Web Screenshots Beat Text for Retrieval-Augmented Generation. Preprint.

Code

  • LEANN, 12k stars: a vector index that cuts storage by 97%, so RAG runs locally on a laptop.
  • PixelRAG, 8k stars: retrieval over web screenshots instead of parsed text.
  • SkyPilot, 10k stars: top-10 contributor; built the high-availability controller for SkyServe.

zhifei.li · Google Scholar · zhifei.li@berkeley.edu

Pinned Loading

  1. skypilot-org/skypilot skypilot-org/skypilot Public

    The AI Compute Platform for frontier teams. SkyPilot turns fragmented AI compute into one AI supercomputer, so frontier AI teams build custom intelligence faster.

    Python 10.4k 1.2k

  2. StarTrail-org/PixelRAG StarTrail-org/PixelRAG Public

    The end of web parsing. The beginning of scalable pixel-native search. link: https://pixelrag.ai/

    Python 8.7k 731

  3. StarTrail-org/LEANN StarTrail-org/LEANN Public

    [MLsys2026]: RAG on Everything with LEANN. Enjoy 97% storage savings while running a fast, accurate, and 100% private RAG application on your personal device.

    Python 12.8k 1.1k

  4. nonstop nonstop Public

    Autonomous work mode for Claude Code. Pre-flight risk assessment, blocker decision framework, session-scoped stop hook.

    Shell 263 27

  5. SageSeekerSociety/cheese-backend SageSeekerSociety/cheese-backend Public

    芝士后端

    TypeScript 20

  6. UCB-ADRS/ADRS UCB-ADRS/ADRS Public

    AI-Driven Research Systems (ADRS)

    Jupyter Notebook 146 24