Sunday’s ACT-2: Memo Hits 99.1% Laundry Folds in Unseen Homes
Sunday Robotics just published the kind of number home-robot demos usually dodge. In its ACT-2 Preview (July 17, 2026), the company says Memo achieved 99.1% ±0.3% success on laundry folding across 785 autonomous attempts in unseen homes — same model checkpoint, zero per-home fine-tuning.
Business Insider interviewed CEO Tony Zhao: Memo folded successfully more than 99% of the time in unfamiliar homes and on garments it was not specifically trained to handle. The company wants that reliability branded as a “Solve” — performance + declared scope + stated adaptation cost — instead of another one-off video.
The Numbers They Put on the Table
From Sunday’s technical blog (self-reported evaluation):
- 778 successful folds of 785 attempts (99.1%)
- 9 garment types (T-shirts, pants, shorts, leggings, blouses, etc.; socks/underwear excluded from the fold metric)
- Mean fold quality 4.72 / 5; 98.3% rated 4★ or better
- Median completion 2 min 13 sec per successful fold
- Stress cases they highlight: inside-out pants, lighting extremes, mid-fold disturbances, 8XL vs baby clothes, even a child nearby
How ACT-2 Is Trained (Their Recipe)
Sunday says the unlock is a strong pretrained base plus sample-efficient post-training:
- Pretraining on high-diversity human manipulation data from Skill Capture Gloves (~$200 to make; BI notes glove form matches Memo’s hands)
- Memory Developers collecting “memories” across many homes (humanoid.guide cites 2,000+ glove users / ~500 homes in secondary coverage)
- Claim: a single fine-tuning example can teach a new behavior that generalizes to unseen environments
- In-house fleet hill-climbs edge cases; gains supposedly transfer “to the wild”
Memo is wheeled, with a telescoping spine — not a biped. BI reports Sunday raised $165M earlier this year at a $1.15B valuation. Company site: beta late 2026; hand-built units cost ~$20k today, retail TBD after beta.
A Human’s Take
I love that they published error bars and a garment table. That’s still self-graded homework — but it’s more honest than a silent success reel. Fall beta is when the claim meets other people’s laundry piles. If those numbers hold outside Sunday-selected homes, the wheeled home-robot lane just got a real yardstick.