Skild AI's S1 learns 10-minute robot tasks from a single video prompt
Skild AI unveiled S1 on 2026-08-25, a robot foundation model that performs unseen long-horizon tasks (up to ~10 minutes, e.g. pancakes, pour-over coffee, potting a plant) from one video demonstration with no fine-tuning, reaching 66% success on unseen tasks vs 9% for a language-prompted policy.
Key facts
- In-context learning from one video; tasks up to ~10 minutes and dozens of steps never seen in pretraining
- Success: 96% seen tasks, 66% unseen tasks vs 9% for language-prompting (~7x)
- One demo video ≈ 380 post-training episodes; 11 minutes from demo to autonomous execution (plant potting)
- Trained on teleop, human video, simulation and data-capture gloves; runs on arms, humanoids and quadrupeds
- NVIDIA (2026-09-10): Skild at $100M revenue run rate 10 months after first deployment; 60+ deployment partnerships
What happened
S1 treats a human demonstration video as the prompt, the way an LLM takes an example in context. Skild says it is the first robotics foundation model to show in-context learning on extremely long-horizon tasks unseen in pretraining. S1 is in use with commercial partners; there is no public API. Skild also acquired Fetch Robotics assets (Zebra's robotics division, 2026-04-15; see 2026-04-15-skild-ai-acquires-zebra-fetch-robotics) to speed up deployment.
Why it matters
Along with Generalist GEN-1.5 six days earlier, S1 marks the arrival of prompt-by-demonstration in robotics, a possible "GPT-3 moment" where adding a skill no longer needs a new training run. Results are company-reported.
Changelog
- 2026-09-29: created
- 2026-09-29: linked the Zebra/Fetch acquisition entry
Models
- Skild S1 (Skild Brain) Skild AI · current
Related events
- Skild AI raises $1.4B at $14B+ valuation for its 'omni-bodied' Skild Brain ★★★
- Skild AI acquires Zebra Technologies' robotics division (formerly Fetch Robotics) to put its robot brain in warehouses ★★
- Generalist GEN-1.5 learns dexterous robot tasks from one demonstration ★★★
- Figure Helix 2.5: humanoids do chores zero-shot in 30 never-seen homes ★★★★★
- Skild AI's S1 learns soccer through 140+ years of simulated self-play and transfers to a real humanoid ★★★★
Sources (4)
- officialSkild AI: Introducing S1 — In-Context Learning for Robotics
- officialSkild AI on X: Introducing S1
- pressThe Robot Report: Skild AI unveils S1
- pressNVIDIA blog: Skild AI taps NVIDIA physical AI to teach robots from a single video
id: 2026-08-25-skild-ai-s1 · updated 2026-09-29 · open in the interactive timeline