Answer

Short answer:

Create generates entirely new visuals from text, sketches, or 3D models. Edit modifies specific parts of an existing image without changing the rest of the scene. Upscale increases the resolution and detail of a final image for presentation.

1/ Overview

In Rendair AI, these three functions represent the stages of a professional visualization workflow. You typically start by creating a base render to establish the concept. You then edit that render to refine details or address client feedback. Finally, you upscale the approved image to ensure it is sharp enough for large-format presentations or printing.

Understanding the distinction ensures you do not waste credits regenerating an entire image when you only needed to fix a small detail, or conversely, trying to "edit" a low-quality file that actually needs upscaling.

2/ How it works

Create

You provide a prompt (and optionally a sketch or 3D screenshot). The AI interprets this data and synthesizes a completely new image. This process involves heavy interpretation, meaning the AI makes many decisions about lighting, texture, and composition based on your instructions.

Edit

You select a specific area of an image using a brush or lasso tool. The AI keeps the unselected areas exactly as they are and only regenerates the pixels inside your selection. This allows for precise control over elements like furniture, materials, or unwanted artifacts.

Upscale

You take a finished low-resolution image and pass it through a specialized enhancement model. The AI analyzes the existing pixels and predicts new details to increase the density, usually multiplying the resolution by 2x or 4x. It does not change the design; it only clarifies it.

Chat (bonus)

You can use Chat to access all of the Create, Edit, Upscale, Video functions within the same chat interface. Get things done via natural conversation with Rendair Assistant.

3/ Capabilities

Create

• Generate photorealistic renders from simple line drawings.

• Visualize 3D models (white mode or screenshot) with realistic materials.

• Explore multiple design concepts rapidly using text prompts.

• Produce initial drafts at standard resolutions (approx. 1MP or 2K for Nano Banana Pro).

Edit

• Remove unwanted objects (people, cars, construction debris).

• Change specific materials (e.g., swap concrete for wood).

• Add elements that were missing from the 3D model.

• Fix AI artifacts or "hallucinations" from the creation phase.

Upscale

• Increase image resolution to 2K, 4K, 6K, or 8K.

• Remove noise and grain from initial renders.

• Sharpen textures for large-screen presentations.

• Prepare images for print marketing materials.

4/ Inputs and outputs

Create

• Inputs: Text prompts, Sketches, Elevations, 3D Screenshots, Reference Images.

• Outputs: Standard resolution images (1MP–2MP), Video (from image).

Edit

• Inputs: Any existing image (uploaded or generated in Rendair).

• Outputs: Modified image at the same resolution as the input.

Upscale

• Inputs: Finalized low-resolution renders.

• Outputs: High-resolution images (up to 8K).

5/ When to use this

Use Create when:

• You are at the start of a project and need ideas.

• You have a SketchUp or Revit model and need a quick visualization.

• You want to see how a building looks in different weather conditions.

Use Edit when:

• The client likes the render but hates the chair in the corner.

• The AI generated a person with distorted features.

• You need to clean up a messy site photo by removing debris.

Use Upscale when:

• The design is approved and you need the final file.

• You are zooming in and the texture looks blurry.

• You need to print the rendering for a billboard or brochure.

> “Don't upscale until the design is final. It wastes credits to upscale a draft that will change five minutes later.”

6/ Limitations or notes

Create

• Accuracy: The AI may misinterpret complex architectural geometry if the prompt or input sketch is vague.

• Consistency: Generating the "same" image twice will result in slight variations unless specific seeds and controls are used.

Edit

• Selection: The quality of the edit depends on your selection. If you select too little area, the AI cannot blend the new object; if you select too much, it may change things you wanted to keep.

• Resolution: Editing tools generally work at the resolution of the base image.

Upscale

• Fidelity: Upscaling adds detail but cannot "fix" a bad design. If a window is crooked in the base render, it will be a very sharp crooked window in the upscaled version.

• Noise: At very high resolutions (8K), some textures may introduce noise depending on the complexity of the surface.