Company
Sunday Robotics
Sunday Robotics (sunday.ai) is a Mountain View, California-based AI robotics company building autonomous home robots.
- Founded
- 2024
- HQ
- Mountain View, California
- Status
- private
Models
1
Overview
Sunday Robotics (sunday.ai) is a Mountain View, California-based AI robotics company building autonomous home robots. Founded in 2024 by Stanford researchers Tony Z. Zhao (CEO) and Cheng Chi (CTO), the company emerged from stealth in November 2025 with Memo, a wheeled home robot powered by ACT-1, a foundation model trained on zero robot data. Sunday raised a $35M Series A led by Benchmark and Conviction (Nov 2025) and a $165M Series B led by Coatue at a $1.15B valuation (Mar 2026), making it a robotics unicorn. The company plans a household beta program in late 2026.
Verified record
- Verified deployments
- None on file
- Active incidents
- None on file
DEPLOY Intelligence
Market intelligence for physical AI
Analyst-grade signals, competitive tracking, and investment context across the global physical AI landscape. Launching 2026.
Key facts
CEO
Tony Z. Zhao — Stanford PhD dropout, ex-DeepMind, ex-Tesla Autopilot
CTO
Cheng Chi — Stanford SNF researcher, Columbia PhD
Funding
$200M total ($35M Series A Nov 2025 + $165M Series B Mar 2026)
Valuation
$1.15B post-money (Series B, Mar 2026)
Investors
Coatue (lead), Benchmark, Bain Capital Ventures, Fidelity, Tiger Global, Conviction, Xtal Ventures
Technology
ACT-1 foundation model trained on zero robot data; proprietary Skill Capture Glove for data collection; full-stack hardware + software
Financial stage
Early (VC-backed, pre-revenue, beta launching late 2026)
Data & sources
Press releases
2
Web sources
3
5 sources backing this record.View all →
Models (1)
View all models →Sunday Robotics on the deployment map
Where Sunday Robotics's robots are verified operating. Explore the deployment map by place and type.
Relationships
Current leadership (2)
- Cheng Chi Co-founder & CTOSEC-verified
- Tony Z. Zhao Co-founder & CEOSEC-verified
Founders (2)
- Tony Z. Zhaono longer at company
- Cheng Chino longer at company
Safety record
No incidents on record for Sunday Robotics.
Only active incidents are counted. Retracted incidents are excluded from this summary but remain reachable at their canonical URLs.
Full safety record: incidents, sourcing, and exposure data →
Recent coverage
Sunday Robotics in third-party press
Funding rounds (2)
- Series B2026-03-12
$165M · $1.1B post
Investors: Xtal Ventures (follow), Coatue Management (lead), Bain Capital Ventures (follow), Fidelity Management & Research (follow), Tiger Global Management (follow), Benchmark (follow), Conviction Partners (follow)
- Series A2025-11-24
$35M(reported)
Investors: Benchmark (lead), Conviction Partners (lead)
Sources (5)
- https://www.globenewswire.com/news-release/2026/3/12/3254877/0/en/sunday-raises-165m-to-launch-first-autonomous-robots-by-thanksgiving.html
- https://mlq.ai/news/sunday-robotics-raises-165-million-series-b-at-115-billion-valuation-for-home-robot-launch/
- Sunday Robotics: The helpful robotics company · https://www.sunday.ai/
- Sunday's Series B: No More Demos · https://www.sunday.ai/journal/series-b
- Sunday Robotics | Valuation, Funding Rounds & Stock Price · https://www.caplight.com/company/sundayrobotics
Common questions
- What is Sunday Robotics?
- Sunday Robotics (sunday.ai) is a Mountain View, California-based AI robotics company building autonomous home robots. Founded in 2024 by Stanford researchers Tony Z. Zhao (CEO) and Cheng Chi (CTO), the company emerged from stealth in November 2025 with Memo, a wheeled home robot powered by ACT-1, a foundation model trained on zero robot data. Sunday raised a $35M Series A led by Benchmark and Conviction (Nov 2025) and a $165M Series B led by Coatue at a $1.15B valuation (Mar 2026), making it a robotics unicorn. The company plans a household beta program in late 2026.
- What does Sunday Robotics make?
- Sunday Robotics has 1 robot model on the DEPLOY registry: Memo (Sunday Robotics builds both physical robots and the AI that runs them).
- Is Sunday Robotics publicly traded?
- No. Sunday Robotics is privately held and not publicly traded, per the DEPLOY registry.
- Who is the CEO of Sunday Robotics?
- Tony Z. Zhao is the ceo of Sunday Robotics, per the DEPLOY registry.
- How can I invest in Sunday Robotics?
- Sunday Robotics is a private company; its shares are not available on public markets, so retail investors cannot buy the stock today.
- Where is Sunday Robotics headquartered?
- Sunday Robotics is headquartered in Mountain View, California.
- Who owns Sunday Robotics?
- Sunday Robotics is privately held; ownership sits with its founders and private investors.
- Where does Sunday Robotics operate robots?
- Sunday Robotics is a robot manufacturer and does not directly operate deployments on the DEPLOY registry. Its products are deployed by customer operators; see the company page for the verified deployment record.
- Is Sunday Robotics safe?
- Sunday Robotics has no incidents on record in the DEPLOY registry. This does not constitute a safety guarantee; it reflects the incidents DEPLOY has tracked and verified to date.
Methodology: Verified · 5 sources (2 primary) · last reviewed 2026-07-15
Verification posture
Verified
High confidence
Review state
Stable
Last reviewed 2026-07-15
Sources by quality tier
- 3
- unclassified
- Unclassified source
- 2
- primary-company-ir
- Company IR disclosure
The framework is documented at /methodology. Corrections at /corrections. Reviewer: DEPLOY editorial team.
Methodology surface for Sunday Robotics.In the press
Recent coverage mentioning Sunday Robotics from third-party publications. Automatically surfaced; not part of the verified registry record.
The New Unicorn Count Reached A 4-Year High In March 2026
Crunchbase News covers the March 2026 unicorn class, including Sunday Robotics reaching $1.15B valuation.
Sunday's Series B: No More Demos
Sunday Robotics announces $165M Series B at $1.15B valuation, led by Coatue, to deploy autonomous home robots in households.
Home Robots Finally Arrive: Inside Sunday Robotics
Bain Capital Ventures profiles Sunday Robotics and its Memo robot, explaining how real-world training data enables reliable household autonomy.
This Home Robot Clears Tables and Loads the Dishwasher All by Itself
Wired covers Sunday Robotics Memo, a home robot that autonomously performs household chores like clearing tables and loading dishwashers.
ACT-1: A Robot Foundation Model Trained on Zero Robot Data
Sunday Robotics introduces ACT-1, a frontier foundation model trained on zero robot data that powers the Memo home robot.
Machine-readable surfaces
- Markdown mirror: /companies/sunday-robotics.md
- RSS feed: /companies/sunday-robotics/feed.xml
- JSON-LD: embedded in this page’s head
- REST API: /v1/companies/e0122c2d-9922-4f1f-ac6d-d955f0fe3d94
- Revision history: /companies/sunday-robotics/history
- Data documentation: /data
- Query this programmatically: Deploy MCP
Video
Memo is a personal robot, built for busy households.
Meet Memo, the new humanoid robot from Sunday Robotics.
Co-founders discuss the state of AI robotics and Memo.
Deep dive into Sunday Robotics and their home robot Memo.
Using the Skill Capture Glove for scalable real-world robot data collection.