Sunday Robotics
"The helpful robotics company"
Mountain View AI robotics startup; builds Memo, a wheeled home humanoid trained on 10M chore episodes; $1.15B valuation after $165M Series B in 2026.
Sunday Robotics is an AI robotics company founded in 2024 and headquartered in Mountain View, California. Co-founders Tony Zhao (CEO) and Cheng Chi (CTO) are Stanford-trained roboticists whose prior research includes the ALOHA bimanual robot platform, ACT (Action Chunking with Transformers), and diffusion policy — foundational contributions to imitation-learning-based robot control. The team of more than 70 engineers and researchers holds experience from Stanford, Tesla, DeepMind, Waymo, Meta, OpenAI, and Apple.
Sunday emerged from stealth in November 2025 with its flagship product, Memo. Unlike bipedal humanoids competing in the space, Memo is a wheeled, torso-style robot standing approximately 1.7 meters tall and weighing 77 kg. It features a vertical-lift mechanism allowing the arms to reach from floor level to roughly 2.1 meters. Two multi-degree-of-freedom arms with dual grippers enable household manipulation tasks. Passive stability means the robot can be powered down at any state without dropping or falling. Memo is engineered specifically for domestic chores: loading and running dishwashers, clearing tables, folding laundry, and general tidying.
Sunday's training methodology distinguishes it from competitors. The company shipped its Skill Capture Glove — a wearable motion-capture device priced at approximately $200 — to thousands of "Memory Developer" participants. These volunteers recorded authentic household routines in their own homes, generating approximately 10 million chore episodes from more than 500 real residences. This real-world data trains Sunday's ACT-1 foundation model to handle long-horizon, variable tasks in messy, unstructured home environments.
On funding, Sunday raised an initial $35 million from Benchmark and Conviction Partners, then closed a $165 million Series B in March 2026 led by Coatue Management, with participation from Bain Capital Ventures, Tiger Global, and Conviction Partners, reaching a $1.15 billion valuation. Current per-unit build cost is approximately $20,000; Sunday has publicly targeted a future retail price below $10,000 at manufacturing scale. A beta program with approximately 50 "Founding Families" is planned for late 2026.
Primary type & automation activities this supplier delivers:
Memo Home Robot
- Model: Memo
- Launch Year: 2025
1.7m tall wheeled domestic robot with two multi-DOF arms trained on 10M real household episodes, capable of loading dishwashers, folding laundry, and clearing tables.
Contact Sunday Robotics
WEBSITE
https://www.sunday.ai/HEADQUARTERS
United States
Company Facts
Founded
2024
Primary Role
Manufacturer
Company Size
-
Primary Region
North America
Annual Sales
-
Funding Stage
Growth / Late-Stage VC
Funding Total
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