Runwayml Gen4 Aleph

Runwayml Gen4 Aleph

Playground

RunwayML Gen4 Aleph is a Video-to-Video model for editing, transforming, and generating video at $0.18 per second. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

Runway Gen4 Aleph

Transform your videos with natural language instructions. Runway Gen4 Aleph is a powerful video-to-video model that understands text prompts to edit, modify, and reimagine your footage — from removing objects to changing environments and styles.

Why It Looks Great

• Natural language editing: Simply describe what you want changed — remove objects, alter backgrounds, modify styles.
• Context-aware transformations: Understands scene structure and maintains visual coherence throughout edits.
• Reference image guidance: Optionally provide a reference image to guide the visual style or target appearance.
• Flexible aspect ratios: Supports 16:9, 4:3, 1:1, 3:4, and 9:16 for any output format.
• Prompt Enhancer: Built-in tool to help refine and improve your editing instructions.
• Temporal consistency: Maintains smooth, stable results across all frames.

Parameters

How to Use

1. Write your prompt — describe the transformation you want (e.g., “Remove people from the video”, “Change the sky to sunset”, “Make it look like a watercolor painting”).
2. Use Prompt Enhancer (optional) — click the button to refine your instructions for better results.
3. Upload your video — drag and drop or paste a public URL.
4. Choose aspect ratio — select the output format that fits your needs.
5. Add reference image (optional) — provide visual guidance for the target style.
6. Run — click the button to start processing.
7. Download — preview and save your transformed video.

Pricing

Per-second billing based on input video duration.

Examples

Best Use Cases

• Object Removal — Remove unwanted people, objects, or distractions from footage.
• Environment Changes — Transform backgrounds, skies, or settings without reshooting.
• Style Transfer — Apply artistic styles, color grades, or visual aesthetics to existing videos.
• Visual Effects — Add weather effects, lighting changes, or atmospheric modifications.
• Content Repurposing — Adapt existing footage for new contexts or creative directions.

Example Prompts

• “Remove people from the video”
• “Change the background to a tropical beach”
• “Make it look like a vintage film from the 1970s”
• “Add snow falling throughout the scene”
• “Transform into an anime style”
• “Replace the sky with a dramatic sunset”

Pro Tips for Best Results

• Be specific and clear in your prompts — describe exactly what you want changed and how.
• Use the Prompt Enhancer to improve vague or simple instructions.
• For style changes, provide a reference image that captures the target aesthetic.
• Start with shorter clips to test your prompt before processing longer videos.
• Combine object removal with style changes in a single prompt for complex edits.

Notes

• If using URLs for video or reference image, ensure they are publicly accessible. A preview in the interface confirms successful loading.
• Processing time scales with video duration and complexity of the requested edit.
• Complex transformations may require more descriptive prompts for best results.

# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/runwayml/gen4-aleph" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
    "aspect_ratio": "16:9"
}'

# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"