Haohui Liu

Research @ OpenAI

San Francisco, California, United States

About

Life-longer learner

Experience

  • Member of Technical Staff at OpenAI
    Jan 2026 - Present · 7 mos

    Doing research

  • Software Engineer at Microsoft
    Feb 2025 - Jan 2026 · 1 yr

    Azure OpenAI evals: GPT-5, Deep Research, Sora, Sora 2, o3, o4-mini, codex-mini, and more!

  • Carnegie Mellon University (On-site)
    • Teaching Assistant for Generative AI 10623
      Jan 2024 - Dec 2024 · 1 yr

      TA for 10623 Generative AI (Grad Level) Translated recent research ideas into stable, production-quality assignments, iterating under real student feedback and ambiguity; awarded TA Award (Fall 2024) for sustained impact

    • Teaching Assistant for Machine Learning 10601
      Aug 2023 - May 2024 · 10 mos

      TA for 10601 Machine Learning Led the redesign of core ML coursework, modernizing assignments to neural language modeling and Transformers in PyTorch and designing end-to-end systems that require implementing multi-head self-attention, pretraining, and downstream fine-tuning to emphasize representation learning

  • Software Engineer Intern at Microsoft
    May 2024 - Aug 2024 · 4 mos

    • Fine-tuned and evaluated multiple foundation models (Llama 3, Phi-3, Mistral) on a custom-curated speech recognition dataset, addressing systematic failure modes including mispronunciations, out-of-distribution names, and accented speech through data curation and training strategy iteration • Applied state-of-the-art instruction tuning techniques on GPT-4o, designing prompt and supervision strategies to elicit consistent, controllable behavior on speech-centric tasks under limited labeling and deployment constraints

  • Jane Street INSIGHT at Jane Street
    Aug 2023 - Aug 2023 · 1 mo