Technology Snapshot
A concise view of platform maturity and deployment footprint.
Flagship PlatformMemo
Sunday
PrivateFounded by Stanford PhD roboticists Tony Zhao (ALOHA creator) and Cheng Chi, building Memo, a wheeled household robot trained on 10 million real home routines from 500+ homes. Reached $1.15 billion valuation in March 2026 with $165M Series B led by Coatue Management.
Founded 2024$35M raised
Humanoid Robots
1 Humanoid RobotIntroduction
Sunday Robotics is a Mountain View-based company building autonomous household robots, founded by Stanford researchers Tony Zhao and Cheng Chi whose work on ALOHA and diffusion policy advanced robot imitation learning. Its flagship Memo is a wheeled semi-humanoid designed for domestic chores, trained on millions of routines from 500+ homes.
Technology
Platform maturity, autonomy stack, and flagship-system specifications in one view.
Memo Specs
Published operating specifications for the lead system.
Battery Life4 hours
Speed3.6 km/h
Degrees of Freedom27
Investors
March 12, 2026Funding RoundInvestment
Series B$165 million
Valuation History
Follow Sunday's valuation growth through its funding rounds.
Management Team
Company Story
Sunday Robotics is a Mountain View-based company building autonomous household robots, founded by Stanford researchers Tony Zhao and Cheng Chi whose work on ALOHA and diffusion policy advanced robot imitation learning. Its flagship Memo is a wheeled semi-humanoid designed for domestic chores, trained on millions of routines from 500+ homes.
- 2025
Sunday Robotics is founded by Stanford roboticists
Sunday Robotics was founded by Tony Zhao and Cheng Chi, Stanford researchers whose ALOHA system and Action Chunking with Transformers laid groundwork for a new approach to household robotics. Zhao dropped out of his Stanford PhD to co-found the company.
StanfordALOHA - 2025
Series A funds data collection at home scale
The company raised a $35 million Series A from Benchmark and Conviction, developing Skill Capture Gloves that recorded ~10 million household routines across 500+ homes.
Series A10M routines - November 19, 2025
Sunday emerges from stealth with Memo
Sunday emerged from stealth on November 19, 2025, unveiling Memo, a wheeled semi-humanoid prioritizing reliable manipulation over bipedal locomotion.
MemoStealth - March 12, 2026
Series B lifts Sunday to unicorn status
In March 2026, Sunday raised a $165 million Series B led by Coatue, reaching $1.15 billion valuation. Deliveries begin Thanksgiving 2026.
Series BCoatue