Sunday

Sunday builds autonomous home robots intended to take over everyday household chores, with the stated mission of putting a personal robot in every home. The company was founded by Stanford PhD roboticists Tony Zhao and Cheng Chi and employs around 160 people. It raised $165m in a Series B round at a valuation of $1.15 billion.

Its main product, Memo, is designed to perform tasks such as loading dishwashers, folding laundry and clearing tables. Rather than relying on teleoperation or rigidly programmed routines, the robot learns directly from human demonstrations and continuously expands its Skill Library using real-world data gathered from hundreds of households. A beta launch is targeted for 2026.

Underpinning the system is a technical stack spanning robotics, AI/ML model training, imitation learning from human demonstrations, motion capture, autonomous manipulation, and data collection and evaluation. The Skill Capture Glove, a wearable device, records human movements and translates them into robot skills.

The engineering team is vertically integrated, owning hardware design, software, data collection, model training and evaluation within a single organisation. Sunday describes this integration as the source of its iteration speed, and characterises its culture as combining AI research with pragmatic engineering, focused on reclaiming time lost to mundane tasks.