Sunday Raises $165M in Series B Funding to Expand Autonomous Home Robotics

The robotics world has been full of impressive demos for years. Robots waving arms on stages, opening doors in carefully controlled labs, performing tricks that look great in a keynote. The hard part was never the demo. The hard part was getting a robot to show up in a real home and actually earn its keep. That is the problem Sunday is stepping directly into, and the company just secured $165M in Series B funding at a $1.15B valuation to push that mission forward. Coatue led the round, with Bain Capital Ventures, Fidelity Management & Research Company, Tiger Global, Benchmark, Conviction, and Xtal Ventures also backing the vision. Thomas Laffont of Coatue is joining the board, which tells you this is not a casual investment. It is a conviction play.

Credit where it’s due. Congratulations to Tony Zhao, CEO and co-founder of Sunday, and co-founder Cheng Chi for pushing a vision that has haunted robotics for decades. The dream was never another robot demo waving a plastic arm under stage lights. The dream was a robot that lives in your house and earns its keep. Sunday’s first product, Memo, is designed for exactly that. Clear the table. Toss the scraps. Load the dishwasher. Grab the socks that somehow multiply in the laundry abyss. Even pull an espresso shot when the morning hits like a freight train. The goal is not spectacle. The goal is usefulness.

Here is where things get interesting. Robotics has always had a data problem. Robots can move, but learning the messy choreography of real homes is another game entirely. Sunday’s answer is the Skill Capture Glove. Over 2,000 of these gloves are already in the wild with what the company calls Memory Developers, capturing the way humans naturally perform everyday tasks. That movement data feeds directly into Memo’s training loop, building a growing library of real household behavior. The result is tens of millions of movement episodes shaping how the robot understands the world.

Under the hood sits a team of 70+ engineers and researchers, and the growth curve is aggressive. Engineering has grown 3x. Research has expanded 4x. The company expects its real world data collection to scale 5x as Memo prepares to move from lab curiosity to kitchen co-worker. Thousands of households have already applied to be part of the upcoming 2026 beta program, which says something about the appetite for a robot that actually helps instead of posing for press photos.

Sunday is betting that the future of robotics is not built in perfect labs. It is built in cluttered kitchens, messy laundry rooms, and homes where real life refuses to stay organized. The companies that capture that chaos as data are the ones that eventually turn science fiction into Tuesday morning routine. And judging by the momentum behind Tony Zhao and Cheng Chi, Sunday might end up being the day of the week the robotics industry has been waiting for.