Home robots trained from real household demonstrations
HQ: Mountain View, California, United States | Founded: 2024 (reported; public introduction in 2025) | Employees: Not disclosed in the reviewed sources | Stage: $165M Series B at $1.15B announced March 2026 | Website: https://www.sunday.ai/
Tony Zhao and Cheng Chi founded Sunday after work associated with ALOHA, diffusion policy, and demonstration-based robot learning. Company materials place it in Mountain View. Its vertically integrated approach spans hardware, training, and data collection, including Memory Developers recording tasks with a glove aligned to the robot's movement.
The March 12, 2026 company release names Coatue as lead, Thomas Laffont as a new board member, and Bain Capital Ventures, Fidelity, Tiger Global, Benchmark, Conviction, and others as participants. Memo's planned beta is the relevant maturity marker. Neither general retail availability nor completed thousands-of-households deployment was established. The exact legal incorporation date was not resolved; the reported 2024 founding is qualified.
Sunday builds Memo, a robot intended to handle household chores, and collects training demonstrations with its Skill Capture Glove. A $165M Series B led by Coatue at $1.15B was announced in March 2026. Home beta deliveries were planned for late 2026; this profile does not treat that plan as completed deployment.
Editorial assessment: household demonstrations may cover environments that laboratory data misses. The hard part is delivering consumer-grade safety, maintenance, privacy, and useful task coverage at a price households will pay.
Evidence boundary: financing announcements establish disclosed transactions, not audited operating performance. Unavailable headcount, margins, and retention are not estimated, and company claims remain attributed.
Category: Robotics & Automation Startups
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