First screen, captured 2 days ago. Hover to scroll the page, or open the video.

Genie 4

What HN thinks

A world model that forgets the castle the moment you look away, and a saxophone that's secretly a clarinet.

Object permanence is still missing
Commenters spotted objects changing or vanishing when they leave frame, like extra castles, missing catapults and helmets appearing, and doubt it is a true world simulation. Some suggest backing it with a persistent 3D world state.
Altman's 'movies become games' is artless
A large subthread argues movies and games are distinct art forms valued for deliberate creative choices, and generated worlds won't replace them. Others welcome more immersion and lower barriers for indie creators.
Robot-training claims are doubtful
Some find it implausible that video-game-like physics can train robots, while others point to Waymo's use of a world model and argue low-fidelity simulation is still useful.

Consensus: Most agree the demos are impressive but visibly flawed, with poor consistency when objects go out of view, which is odd for cherry-picked showcase examples.

Recommended in the comments

HY-World 2.0 ↗ (library): It is an open-weights world model that can run locally, even if it is less polished than Genie.
Gemini Robotics ↗ (product): Cited as evidence that DeepMind already knows how to train robots.

Summarised by Claude from the comment thread 2 days ago.

Points: 1019
Comments: 576
Best rank: #1
Posted: 2026-10-27 by acossta
Category: Ai ml

genie-4 world-models google-deepmind gemini interactive-simulation generative-video

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Captured 2 days ago. Click for the whole screenshot.

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