# World Model: what I've logged

> World Model comes up in 2 posts of my AI log, from July 2026 to September 2026, and each item below links to the primary source. The sources come from arXiv, filed under frontier, open weights and science.

## Items

1. **Training Object Permanence in World Models** (arXiv, 21 Sept 2026): Tests whether video-generation world models hold onto objects that go out of view and trains them to do so. [Primary source](https://arxiv.org/abs/2609.28654) · [Post](https://heyaliasif.com/ai/2026-09-21-week-in-ai#item-9)
2. **ABot-World-0** (arXiv, 20 Jul 2026): An action-conditioned video world model that rolls out long, interactive scenes in real time on a single desktop GPU. [Primary source](https://arxiv.org/abs/2607.19191) · [Post](https://heyaliasif.com/ai/2026-07-20-week-in-ai#item-6)

## Posts

- 2026-09-21 [Claude Opus 5.5 and GPT-6 Sol land, Claude finds a new enzyme](https://heyaliasif.com/ai/2026-09-21-week-in-ai)
- 2026-07-20 [Claude Opus 5 arrives, Gemini 3.6 Flash and Solar Open 2 follow](https://heyaliasif.com/ai/2026-07-20-week-in-ai)

Canonical: https://heyaliasif.com/ai/topics/world-model