Haoquan Zhang 张皓泉 CUHK · ByteDance Seed ByteDance Seed CUHK

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Hi, I'm Haoquan, a second-year PhD student at The Chinese University of Hong Kong, advised by Weiyang Liu. I'm also a research intern at ByteDance Seed, working with Haodong Duan on understanding foundation models through rigorous evaluation. Previously, I was an intern at Shanghai AI Lab.

My research focuses on how models represent and interact with the visual world. Through SGP-Gen and PixelBench, I explore vision as text and how training on textual representations of visual content can improve multimodal understanding and generation.

We also study agentic and active vision: how models can use code and tools to actively gather and manipulate visual information as they reason. We explore how to build, train, and evaluate these capabilities through PyVision, PyVision-RL, and TIR-Bench.

Also exploring what’s next.

News

4th Nov 2026
We released PixelBench to study pixel-level image generation and understanding in language models. Paper · Code & Benchmark · Models · X Post.
29th Jun 2026
I joined ByteDance Seed as a research intern, working on understanding foundation models through rigorous evaluation.
18th Jun 2026
TIR-Bench was accepted to ECCV 2026! Check out our leaderboard.
2nd Apr 2026
TIR-Bench is used by Qwen3.6-Plus!
24th Feb 2026
PyVision-RL is now online. Check this page for more details.

Research

Experiences

Jun 2026 – Present
ByteDance Seed · Research Intern
Working with Haodong Duan
Nov 2024 – Jul 2025
Shanghai AI Lab · Research Intern
Mentored by Kaipeng Zhang