The AI video editing landscape is rapidly evolving, with Runway's Aleph and Luma's Modify Video model emerging as two leading models for transforming video content. While both tools empower creators with powerful text-based editing capabilities, they differ in their core philosophies, feature sets, and ideal use cases.
At a Glance: Runway Aleph vs. Luma Modify Video
Feature | Runway Aleph | Luma Modify Video |
---|---|---|
Core Function | Comprehensive, in-context video editing and generation. | Video restyling and transformation. |
Primary Use Case | Detailed, multi-faceted post-production tasks. | Creative and stylistic video alterations. |
Key Features | Object/person removal, camera angle generation, lighting and weather changes, green screening. | Style transfer, world swapping, motion preservation, character and prop retexturing. |
Video Length Limit | 5 seconds. | Up to 10 seconds. |
Known For | Fluid, conversational editing and maintaining scene consistency. | High-fidelity motion and performance capture, including facial expressions. |
Input | Video footage, text prompts, reference images. | Video clips, text prompts, style presets, and reference images. |
Delving into the Details
Runway Aleph positions itself as a comprehensive "in-context video model," designed to handle a wide array of post-production tasks traditionally requiring specialized software and expertise. Its strength lies in its ability to perform "fluid editing," allowing for real-time, conversational manipulation of video content.
Key Features of Runway Aleph:
Object and Person Manipulation: Seamlessly add or remove elements within a scene.
Camera Angle Generation: Create new perspectives from existing footage.
Environmental Controls: Change lighting, weather, and time of day.
Precise Green Screening: Isolate subjects with detailed edge detection.
Character Alterations: Modify the age and appearance of actors.
Luma's Modify Video excels at restyling and retexturing video footage while preserving the original motion and performance. It is particularly adept at "world swapping," transforming the entire environment of a scene.
Key Features of Luma Modify Video:
Advanced Motion Preservation: Retains nuances like facial expressions and choreography.
Style and Texture Swapping: Transform live-action into animation or change the material of objects.
Isolated Element Edits: Modify specific elements like wardrobe or props without altering the entire shot.
User-Guided Control: Offers presets like "Adhere," "Flex," and "Reimagine" to control the degree of transformation.
Head-to-Head Comparison
Creative Control and Flexibility:
Runway Aleph offers a broader range of granular editing tools, making it a powerful solution for complex visual effects and detailed corrections. Its ability to generate new camera angles provides filmmakers with significant creative freedom.
Luma Modify Video, on the other hand, gives users more direct control over the degree of stylistic change. Its focus on preserving the original performance and motion makes it a strong choice for projects where the actor's performance is paramount.
Limitations and Considerations:
Both models have their limitations. Runway Aleph is currently restricted to processing a maximum of five seconds of video, which feels restrictive. While powerful, achieving the desired result requires multiple attempts.
Luma Modify Video allows for longer clips of up to 10 seconds. However, it can struggle with maintaining consistency when there is excessive motion in the source footage. It sometimes misinterprets prompts, leading to results that deviate significantly from the original video.
The Verdict:
The choice between Runway Aleph and Luma Modify Video will ultimately depend on the specific needs of the project.
Choose Runway Aleph if: You require a comprehensive suite of post-production tools for tasks like object removal, generating new camera angles, and detailed environmental changes. It is well-suited for filmmakers and visual effects artists looking for an all-in-one solution.
Choose Luma Modify Video if: Your primary goal is to stylistically transform your video while maintaining the integrity of the original motion and performance. It is an excellent tool for artists and content creators focused on visual aesthetics and creative exploration.

A key advantage for creators is that both Runway Aleph and Luma Modify Video are integrated into the Atlabs.ai video generation suite. This allows users to leverage the distinct strengths of each model within a single, unified workflow.
Initially, both Aleph and Luma Modify Video were made available exclusively to customers on the Enterprise plan. Following this introductory period, Atlabs.ai expanded access, making the powerful video modification tools available to users on other subscription tiers as well. This integration provides creators with the flexibility to choose the best tool for each specific editing task—whether it's the comprehensive post-production power of Aleph or the stylistic finesse of Luma—all within one platform.