Runway: Gen-4 Aleph Video to Video API

Runway Aleph is a revolutionary in-context video transformation model designed to perform complex editing tasks through natural language instructions. Unlike standard video-to-video tools that apply global filters, Aleph possesses a deep architectural understanding of the scene’s geometry, lighting, and object persistence. It enables users to add, remove, or replace specific elements while maintaining absolute temporal consistency. Whether shifting a sunny day to a snowy winter or changing an actor's clothing, Aleph updates shadows, reflections, and perspective naturally. In 2026, it is the industry-standard tool for rapid VFX prototyping, social media "magic" edits, and high-end post-production cleanup.

• Input: text, video
• Output: video
• Released: 2025-07-24
• Knowledge cutoff: 2026-01-31