# Sunday Robotics: robotics company

Canonical ID: `e0122c2d-9922-4f1f-ac6d-d955f0fe3d94`

## 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)

- **Slug:** sunday-robotics
- **Status:** private
- **Founded:** 2024
- **HQ:** Mountain View, California

## Models

- [Memo](/models/sunday-memo.md) (humanoid) (id: `dfaf6df5-54ad-47db-968b-b6a90db7fb31`)

## Current leadership (2)

- [Cheng Chi](/people/cheng-chi.md) Co-founder & CTO (SEC-verified)
- [Tony Z. Zhao](/people/tony-z-zhao.md) Co-founder & CEO (SEC-verified)

## Founders (2)

- [Tony Z. Zhao](/people/tony-z-zhao.md) _no longer at company_
- [Cheng Chi](/people/cheng-chi.md) _no longer at company_

## Supplies to

_No verified supply relationships on file. Supply-chain coverage is being added across the registry; check back as the seed populates this company's outbound edges._

_Outbound supply edges. Each appears when verified with at least two strong sources. Sources are append-only; corrections add new sources rather than rewrite history._

## 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.

### 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.


## Sources (5)

1. https://www.globenewswire.com/news-release/2026/3/12/3254877/0/en/sunday-raises-165m-to-launch-first-autonomous-robots-by-thanksgiving.html
2. https://mlq.ai/news/sunday-robotics-raises-165-million-series-b-at-115-billion-valuation-for-home-robot-launch/
3. **Sunday Robotics — The helpful robotics company** · https://www.sunday.ai/
4. **Sunday's Series B: No More Demos** · https://www.sunday.ai/journal/series-b
5. **Sunday Robotics | Valuation, Funding Rounds & Stock Price** · https://www.caplight.com/company/sundayrobotics

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