xAI: Grok Imagine Video Extensions API

Grok-Imagine-Video/Extensions is a high-fidelity temporal extrapolation engine designed to maintain absolute visual and logical consistency over long durations. Utilizing the LCTT architecture, it "remembers" the initial frame's lighting, character geometry, and physics-based momentum, projecting them into future states based on natural language prompts. Unlike standard loopers, the "Extensions" model can introduce new narrative elements (e.g., "The car turns a corner and enters a neon tunnel") without losing the identity of the original subjects. In 2026, it is the premier choice for creating long-form AI cinema and dynamic, infinite-looping digital art for X's immersive canvas.

• Input: text, video
• Output: video
• File input: Supported
• Released: 2026-03-24
• Knowledge cutoff: 2026-01-31