Welcome to our fifth workshop on User Interface at CHI. This year we explore Human-AI-UI Interactions Across Modalities, focusing on how UIs should be designed to enable intelligent agents to effectively interpret and interact with interfaces across 2D and XR environments and how UI agents should be designed to help users understand and use UIs. We bring together researchers from different sub-disciplines of HCI and adjacent fields (ML, CV, NLP, Software Engineering) to discuss how multimodal UI design can support AI as collaborative partners, and how these interfaces must evolve to facilitate human-AI interaction across diverse modalities.

Registration & Submissons: February 10, 2026

Call for Participation

Notification of Acceptance: February 27, 2026

Workshop date: April 13-17, 2026 

(specific date TBA)

Workshop Schedule

*All deadlines are 23:59 AOE