The verified answer
As of Oct 2026, DEPLOY verifies Sunday: 1 model, 2 deployments across 2 regions, $200.0M raised. 1 source back the record.
CategoryHumanoids
Overview
Sunday is a Mountain View-based AI robotics startup building Memo, an autonomous wheeled humanoid home robot. Founded in 2023 by Stanford PhDs Tony Zhao and Cheng Chi, the company emerged from stealth in November 2025 with 5M in seed funding from Benchmark and Conviction, and subsequently raised a 65M Series B at a .15B valuation in March 2026.
Memo is designed to learn household tasks autonomously using Sunday's ACT-1 Foundation model, trained on zero robot data. A Founding Family Beta of 50 households is planned for late 2026.
Verified record
- Verified deployments
- 2 deployments on file
- Active incidents
- None on file
Valuation of record
DEPLOY VERIFIEDPriced roundSeries B post-money
Key facts
Fundingsee investors →
CEO
Co-founder
Total fundingsee investors →
Key investors
ACT-1
Beta
Data & sources
Web sources
1
1 source backing this record.View all →
Models (1)
View all models →Sunday on the deployment map
View the global map2 verified deployments across 2 regions, newest verified Jun 2024. Explore where Sunday's robots are operating, by place and type.
View the full Sunday deployment record →
Relationships
Claims ledger
Public, dated claims by Sunday, each tracked against the evidence. Status is a DEPLOY assessment from primary sources: verified means an independent source confirms it; contradicted means one refutes it; open means the outcome is not yet determinable. Every entry keeps its verbatim quote and source so you can check the call yourself.
- OpenCapacity · claimed 2026-07-16
“ACT-2 Preview: first robotics model to unify broad generalization with high reliability. A single fine-tuning example can teach Memo a new behavior that generalizes. Zero shot, real unseen homes, 99% success rate. 785 autonomous attempts across 9 garment types, no per-home adaptation using single fixed model.”
Disagree with a status? Sunday can submit a correction with evidence and we log the response on the record. Methodology and the full industry ledger live at /stats/claim-integrity.
Current leadership (3)
- Tony Zhao Co-Founder & CEO, Co-founderreported, not verified
- Cheng Chi Co-Founder, Co-founder & CTOreported, not verified
- Tony Z. Zhao Co-founder & CEOSEC-verified
Founders (5)
- Tony Zhaocofounder
- Cheng Chicofounder
- Tony Zhaocofounderno longer at company
- Tony Z. Zhaono longer at company
- Cheng Chino longer at company
Safety record
No incidents on record for Sunday.
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 →
Operator customers (1)
- Sunday2 deployments
Recent coverage
Sunday in third-party press
Peers
98 peers across 1 segment. Every Sunday competitor derived from shared form-factor and application-domain edges.
humanoid(98)
68 companies in this segment · competitive (HHI 574.5255335898561) · leader Figure AI at 1207%
- 1X Technologiesdirect competitor(inferred)strong
- Fauna Roboticsdirect competitor(inferred)strong
- UBTech Roboticsdirect competitor(inferred)strong
- Zeroth Roboticsdirect competitor(inferred)strong
- 1X Technologiesdirect competitor(inferred)moderate
- AI2 Roboticsdirect competitor(inferred)moderate
Mentioned on (3)
Registry pages whose text names Sunday.
People (3)
Financial state
- Total funding
- $200.0M
- Reporting basis
- aggregator_estimate
- Lifecycle stage
- early
- Counterparty risk class
- unknown
Each numeric field carries its own basis marker. Aggregators report a number; this surface preserves the source class so verification depth travels with the value.
Funding rounds (4)
Sunday’s 4 disclosed rounds, $400M in total, oldest to newest.
- Series B2026-03-12
$165M(reported) · $1.1B post
Investors: Tiger Global Management, Coatue Management (lead), Bain Capital Ventures, Benchmark, Conviction
- 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) · $210M post
Investors: Benchmark (lead), Conviction Partners (lead)
- Seed2025-11-19
$35M(reported) · $140M post
Investors: Benchmark, Conviction
Timeline
Every recorded move in Sunday’s history, most recent first: funding rounds, partnerships, acquisitions, supply-chain starts, key hires, and press.
Funding roundSeries B funding round
2026-03-12Series B raising $165000000
Funding roundSeries B funding round
2026-03-12Series B raising $165000000
Funding roundSeries A funding round
2025-11-24Series A raising $35000000
Funding roundSeed funding round
2025-11-19Seed raising $35000000
Recent activity
Every change to this record is dated, sourced, and independently verified where marked.
- Record createdJul 8, 2026
Added to the verified registry
- Deployment verifiedVerifiedJun 1, 2024
Memo at United States (multiple hotel chains)
- Deployment verifiedVerifiedJun 1, 2024
Memo at Germany, Europe
Sources (1)
Common questions
What is Sunday?
What does Sunday make?
Is Sunday publicly traded?
Who competes with Sunday?
Who is the CEO of Sunday?
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Where is Sunday headquartered?
How much funding has Sunday raised?
Who owns Sunday?
Where does Sunday operate robots?
How many robots has Sunday deployed?
Is Sunday a top robotics company?
When was Sunday founded?
Is Sunday safe?
Methodology: Verified · 1 source (no primary) · last reviewed 2026-10-10
Verification posture
Verified
Low confidence
Review state
Stable
Last reviewed 2026-10-10
Sources by quality tier
- 1
- unclassified
- Unclassified source
The framework is documented at /methodology. Corrections at /corrections. Reviewer: DEPLOY editorial team.
Methodology surface for Sunday.Peer companies
- Unitree Robotics12 models
- DLR Institute of Robotics and Mechatronics6 models
- Dobot6 models
- 1X Technologies5 models
- AgiBot5 models
- AheadForm5 models
In the press
Recent coverage mentioning Sunday from third-party publications. Automatically surfaced; not part of the verified registry record.
Be Thi Le – Jan. 10, 1940 – Oct. 11, 2026
Be Thi Le passed on Sunday, Oct. 11, 2026, at the age of 86. Born on Wednesday, Jan. 10, 1940, in Vietnam before coming to the United States. Be was […]
SF Dems back McCoy for District 8 supervisor, apologize for past endorsement of Manny Yekutiel
SAN FRANCISCO (KRON) -- The San Francisco Democratic Party met Sunday night to discuss its past endorsement of Manny Yekutiel. Yekutiel dropped out of the race for District Eight…
Homeless people trapped in sewer by rising flood water rescued
A pair of homeless people were rescued from a sewer in San Bernardino Sunday after they were trapped by roaring flood water. The San Bernardino County Fire Protection District…
Bessent on how Iran war ends: ‘I don’t know’
Treasury Secretary Scott Bessent said Sunday he was unsure how the Iran war will end, with the eight-month mark of the conflict nearing. “I don’t know what ‘crying uncle’ is in…
Christie: GOP committing ‘malpractice’ to try to win Congress
Former New Jersey Gov. Chris Christie (R) said Sunday the GOP is committing “malpractice” in its efforts to retain control of Congress amid a tough midterm environment for the…
Trump says he ‘never thought’ he’d have to hold rallies again
President Trump said Sunday he “never thought” he would hold rallies again as he crisscrosses the country to campaign for Republicans ahead of the November midterm elections.…
Selma Blair screamed maniacally as she was dragged off plane after allegedly biting one flight attendant, hitting another: audio
Troubled actress Selma Blair was caught on disturbing audio screaming maniacally as she was dragged off a Delta Airlines flight at Kennedy Airport after a midair meltdown Sunday.
Man survives shooting outside Los Angeles neighborhood home, 2 sought
Police are searching for two suspects after a man survived a shooting in Los Angeles' Westmont neighborhood Sunday night. Video showed officers responding to a report of a person…
Actress Selma Blair arrested for violent inflight incident
Actress Selma Blair was arrested on Sunday evening at New York's John F. Kennedy International Airport after a violent incident on a Delta Airlines flight that took off from Los…
49ers linebacker suspended one game after 'unsportsmanlike conduct'
(KRON) -- Dre Greenlaw, a 49ers linebacker, has been suspended for one game without pay following unsportsmanlike behavior during Sunday's game, according to the National Football…
Tensions explode in NFL stands as nasty fan fights break out in multiple cities
Viral video shows a Dolphins fan unloading punches on a Bengals fan in the upper deck at Hard Rock Stadium during Sunday's wild NFL weekend.
Selma Blair arrested after in-flight incident
Selma Blair, 54, was arrested and hospitalized Sunday in New York after allegedly attacking crew members mid-air on a Delta flight from Los Angeles.
Machine-readable surfaces
- Markdown mirror: /companies/sunday.md
- RSS feed: /companies/sunday/feed.xml
- JSON-LD: embedded in this page’s head
- REST API: /v1/companies/5a89f9c4-efba-4fca-b0ed-934d9986c26c
- Revision history: /companies/sunday/history
- Data documentation: /data
- Query this programmatically: Deploy MCP
Peer companies
- Unitree Robotics12 models
- DLR Institute of Robotics and Mechatronics6 models
- Dobot6 models
- 1X Technologies5 models
- AgiBot5 models
- AheadForm5 models
Video
I visited @SundayRobotics to see how they're building a household robot that actually works in real homes. Founded by Stanford roboticists Tony Zhao and Cheng
Memo is a personal robot, built for busy households. It works 24/7 to make your life lighter, so you can focus on what really matters. Our beta launches late 20
Introducing ACT-1, a frontier robot foundation model trained with zero robot data Website: https://www.sunday.ai/ X: https://x.com/SundayRobotics
The story behind the Sunday team Website: https://www.sunday.ai/ X: https://x.com/SundayRobotics
We’re moving beyond demos to focus on real-world deployment of our robot, Memo. Our public beta rolls out to users this Fall. See more at: Website: https://www
1,709 → 72,000 sq. ft. in two years To bring Memo into your home, we had to expand our own. Welcome to Memo's New Home. See more at: Website: https://www.sun
Quick breakdown of Sunday Robotics’ Memo — why its look reads as cute, harmless, and approachable. Short, factual explainer for casual viewers and new robot en
Tony Zhao is the co-founder and CEO of Sunday, the helpful robotics company building humanoid, Memo, that is powered by state-of-the-art AI models and an ever-e
Deep dive into Sunday Robotics and their home robot Memo.
Memo is a personal robot, built for busy households.
Co-founders discuss the state of AI robotics and Memo.
Using the Skill Capture Glove for scalable real-world robot data collection.
Meet Memo, the new humanoid robot from Sunday Robotics.
Tyrin Johnson, 20, was shot and killed by National Guard soldiers during a police pursuit early Sunday. The incident is now under investigation by state authori
Heat Index
Category contender75/100
A composite of competitive footprint, funding, press velocity, active partnerships, and supply-chain edges. Different from the Intelligence score below (which is per-form-factor productization). Non-robotics companies cap at 25.
Reality vs attention
Sunday draws attention at the 95th percentile but verifies reality at the 24th percentile among humanoids. Hype Gap +71.5, 2nd widest among humanoids.
6-month trend
Analysis
Clean safety record across 2 verified deployments. Well-capitalized with $400M raised and recent funding activity. Deployment footprint remains limited relative to category peers.
Signal flags
Dimension breakdown
Verified signal
Attention (reach, not merit)
DEPLOY Intelligence scores are computed from verified registry data: confirmed deployments, disclosed funding rounds, regulatory filings, active job listings, video viewership, and press coverage. Confidence ratings reflect data availability. Scores update nightly.
DEPLOY Indices — verified vs claimed
Last computed: Oct 13, 2026