Miju Labs

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Z

Zhou Chang

Head of multimodal interaction & world models (Seedream, Seedance, Doubao assistant) · ByteDance Seed

Executive sponsor
medium confidenceTier B · Map and watchChinese labsimage · video · multimodal

Why they are on the map

Leads teams behind Seedream (text-to-image) and Seedance (text-to-video); joined from Alibaba 2024 source — evidence dated 2026-02

Decides whether the problem is funded.

How ByteDance Seed buys data

Seedream 3.0/4.0 and Seedance 1.0–2.0 reports (2025–26) describe RLHF/reward models for aesthetics and motion; ByteDance historically runs large in-house annotation operations. No Western vendor names public.

Seed head Wu Yonghui (ex-Google DeepMind VP, since Feb 2025). Zhou Chang leads multimodal interaction & world models, incl. Seedream and Seedance; Zhu Wenjia (former Seed head) oversees large-model applications; Li Hang runs AI for Science/Robotics/Responsible AI; Xiang Liang infrastructure.

Full dossier pending

This person was mapped in pass 1. Career, what they have said on the record, interviews, connections, why they matter to us and how to reach them are added in pass 2.

Also at ByteDance Seed
Tier C · Executive sponsor

Wu Yonghui

Head of ByteDance Seed

Tier C · Executive sponsor

Zhu Wenjia

Head of large-model applications (former Seed head)

Tier C · Executive sponsor

Li Hang

Head of AI for Science, Robotics & Responsible AI