runway/gen4 models

gen4 by Runway — AI Model Family

Runway's gen4 family represents the latest advancement in AI video generation, delivering ultra-realistic videos with superior physics simulation, temporal consistency, and precise director-level control. This family solves key challenges in video production by enabling creators to generate high-quality cinematic content from images or videos, streamlining workflows for filmmakers, advertisers, and content teams who need reliable motion, character consistency, and dynamic scenes without traditional shooting constraints. Officially branded as Gen-4 (with variants like Turbo and emerging Gen-4.5 features), it includes three specialized models: Runway | Gen4 | Image for image-to-image transformations, Runway | Gen4 | Turbo for fast image-to-video, and Runway Gen4 | Aleph for video-to-video editing.

Launched around early 2025, with Turbo on April 7, the gen4 family excels in controllable generation modes, making it ideal for professional-grade outputs like establishing shots, chase sequences, product visuals, and visual effects.

gen4 Capabilities and Use Cases

The gen4 family spans image-to-image, image-to-video, and video-to-video categories, each optimized for specific creative pipelines.

• Runway | Gen4 | Image (Image to Image): This model refines static images with enhanced realism, textures, and details while maintaining composition. Use it for pre-visualizing scenes or upgrading key art. Example: Start with a rough character sketch and generate a photorealistic portrait ready for animation.

• Runway | Gen4 | Turbo (Image to Video): Designed for rapid iteration, it animates input images into short clips using text prompts focused on motion and camera work. Supports 5-second or 10-second durations at 24fps and 720p-class resolutions (e.g., 1280×720, 720×1280, 960×960). Fixed seed options ensure consistency across reruns. Realistic use case: Product marketers upload a still product photo and prompt: "Camera slowly orbits the sleek smartphone on a reflective surface, subtle glow highlights edges, smooth pan right at 5 seconds." Output: A polished 5-second reel for social ads, generated in minutes.

• Runway Gen4 | Aleph (Video to Video): Extends existing footage with new motions, effects, or extensions while preserving temporal consistency. Perfect for refining rough cuts or adding VFX to live-action clips.

These models chain seamlessly into pipelines: Begin with Gen4 Image to perfect a reference frame, feed it into Gen4 Turbo for motion tests, then use Aleph to extend or edit the video. Technical specs include multiple aspect ratios for cinematic flexibility (e.g., 16:9), physically accurate interactions, and support for dynamic actions like chases or dialogues—though native audio and lip-sync remain limited.

What Makes gen4 Stand Out

gen4 distinguishes itself through superior physics understanding, human motion realism, and granular control tools like motion brushes, which let users specify exact movement in image regions for director-precision results. It achieves top benchmarks, such as 1,247 Elo points on Artificial Analysis Text-to-Video leaderboards, outperforming prior generations in cause-and-effect logic, smooth camera movements, and object interactions.

Key strengths include lifelike textures, consistent characters from single references, and predictable outputs for iteration-heavy workflows—Turbo uses half the credits per second of standard gen4, enabling fast A/B testing without quality loss. Unlike broader exploration models, gen4 prioritizes image-first control, locking compositions for stable backgrounds and reliable scene chaining, ideal for narrative filmmaking or ads.

This family suits filmmakers, VFX artists, marketing teams, and storyboarders seeking cinematic quality in short-form content. While it excels in visual fidelity (rated 4.1 in tests) and prompt adherence (3.1), it handles complex actions like epic shots or product demos with fewer artifacts than earlier models.

Access gen4 Models via each::labs API

each::labs is the premier platform for integrating the full gen4 family into your applications, offering unified access to Gen4 Image, Turbo, and Aleph through a single, scalable API. Bypass fragmented providers—experiment in the interactive Playground for instant previews, then deploy via SDK for production pipelines.

Build dynamic video apps, automate ad creatives, or prototype films effortlessly on eachlabs.ai. Sign up to explore the full gen4 model family on each::labs.