Unlike video models that generate frame-by-frame, Marble natively outputs Gaussian splats—tiny, semi-transparent particles. This data structure enables real-time rendering, interactive editing, and precise camera control on client devices like mobile phones, a fundamental architectural advantage for interactive 3D experiences.

While today's focus is on text-based LLMs, the true, defensible AI battleground will be in complex modalities like video. Generating video requires multiple interacting models and unique architectures, creating far greater potential for differentiation and a wider competitive moat than text-based interfaces, which will become commoditized.

Instead of replacing entire systems with AI "world models," a superior approach is a hybrid model. Classical code should handle deterministic logic (like game physics), while AI provides a "differentiable" emergent layer for aesthetics and creativity (like real-time texturing). This leverages the unique strengths of both computational paradigms.

Meta's chief AI scientist, Yann LeCun, is reportedly leaving to start a company focused on "world models"—AI that learns from video and spatial data to understand cause-and-effect. He argues the industry's focus on LLMs is a dead end and that his alternative approach will become dominant within five years.

To analyze video cost-effectively, Tim McLear uses a cheap, fast model to generate captions for individual frames sampled every five seconds. He then packages all these low-level descriptions and the audio transcript and sends them to a powerful reasoning model. This model's job is to synthesize all the data into a high-level summary of the video.

The primary challenge in creating stable, real-time autoregressive video is error accumulation. Like early LLMs getting stuck in loops, video models degrade frame-by-frame until the output is useless. Overcoming this compounding error, not just processing speed, is the core research breakthrough required for long-form generation.

When analyzing video, new generative models can create entirely new images that illustrate a described scene, rather than just pulling a direct screenshot. This allows AI to generate its own 'B-roll' or conceptual art that captures the essence of the source material.

Contrary to common perception shaped by their use in language, Transformers are not inherently sequential. Their core architecture operates on sets of tokens, with sequence information only injected via positional embeddings. This makes them powerful for non-sequential data like 3D objects or other unordered collections.

Human intelligence is multifaceted. While LLMs excel at linguistic intelligence, they lack spatial intelligence—the ability to understand, reason, and interact within a 3D world. This capability, crucial for tasks from robotics to scientific discovery, is the focus for the next wave of AI models.