Dated tool comparison
CAD Scene vs Luw.ai
Choose CAD Scene for related architectural image studies inside one Project. Choose Luw.ai when floor planning, editable 3D, home redesign, video, or API belongs in the same toolset.
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At a glance
Competitor facts are current to the review date. A red X marks unavailable or not publicly confirmed. A neutral minus marks partial availability.
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| Decision point | CAD Scene | Luw.ai |
|---|---|---|
| Starting paid price | $12/month250 credits per month on Hobby.Lowest listed starting price | $19/month[6]Pro lists 200 renders monthly. Tax is excluded. |
| Approach | Architect-native rendering workbenchCreate, Enhance and Edit share one project workspace. | Broad AI home-design and browser 3D suite[1][2][3]Tools cover rendering, redesign, floor planning, editable 3D, video, and image-to-3D. |
| AI brief and prompt guidance | Free brief check on SendClarify an ambiguous render with suggested replies or your own answer. You can also choose Skip and Send Now. | ArchiGPT, Archiagent, and a text prompt assistant[5][3][1]Conversational tools guide design and image changes. |
| Generate persistent project settings | Yes, one Composition per projectComposition = Style + Scene + Lighting + Materials + Entourage. Full text-to-all-fields runs during new-project setup. Later, a Project reference image can Generate Composition. Each field can generate from words or images at any time. | Not publicly confirmed[3][1]Projects and Studio state are documented. A generated structured brief shared across separate studies is not. |
| Reuse one visual direction across studies | Yes, across every studyAll studies share the same project settings, Project reference image, and applied Preset. | Styles, references, and day/night controls[1][3]These guide individual work. Reusable structured direction across separate studies is not publicly confirmed. |
| Parallel generation and Variations | Parallel generation at send and laterMultiple images can run in parallel from Composer. Multiple Variations can run later from any finished render. | Not publicly confirmed[1][2]The reviewed pages do not publish a simultaneous output count or later Variation workflow. |
| Supported resolutions | 512, 1K, 2K, 4K [1] | 512×512 Free; 4K paid; Studio up to 8K[6][3]The 8K claim belongs to Studio. Paid subscription cards list 4K. |
| Supported aspect ratios | 1:1, 1:4, 1:8, 2:3, 3:2, 3:4, 4:1, 4:3, 4:5, 5:4, 8:1, 9:16, 16:9, 21:9 [1] | Not publicly confirmed[1][2]The reviewed product pages do not publish a canonical Aspect selector or ratio list. |
| Supported quality levels | Low, Medium, High [1] | Basic and Premium model access by plan[6]Plan-level model access is documented. A native per-render Quality selector is not. |
| Works from a screenshot, any 3D tool | YesStarts from screenshots from Rhino, SketchUp, Blender, Revit and other 3D tools. | Yes[1][2]Official copy names 3ds Max, Revit, SketchUp, Blender, and other 3D screenshots. |
| Source constraint and review | Source-guidedEnhance keeps the source camera, framing, angle and dimensions. Review proportions and openings in every generated result. | Vendor-described geometry and texture preservation[1][2]Luw.ai describes precise preservation. Verify camera, openings, proportions, and textures on every output. |
| Region edit | Yes, Edit modeMark multiple named regions with Rectangle or Brush. Use Eraser to refine them, then change only those areas. | Brush-selected region editing[1][2]Brush-select one region, then direct the local image change. |
| Built-in Preset system | 60+ built-in PresetsApply a built-in Preset, use a Project reference image, or save versioned Presets. | Render and redesign styles[1][2]Sketch and Render workflows expose styles. A versioned five-field Preset system is not documented. |
| Free 4K upscale | Yes, free Lanczos 4K | 4K paid; broader Studio 8K rendering claim[6][3]Free is 512×512. Paid cards list 4K and include Enhancement. |
| Renders survive tab close | YesServer-side render jobs continue after the browser tab closes. | Not publicly confirmed[3]Saved completed renders are documented. Recovery for an in-progress job after tab close is not. |
| Models | Nano Banana 2, Nano Banana Pro, Nano Banana, and GPT Image 2Choose a model per render. | Underlying image models not publicly named[6]Pricing distinguishes Basic and Premium access without identifying the models. |
| Free to try | Yes, no credit cardYour first renders are free. | Yes, two daily credits[6][1]Free is 512×512, watermarked, non-commercial, and excludes Video AI and Enhancement. Daily credits do not carry over. |
| Native plugin | NoUse a browser screenshot from the 3D tool you already work in. | No native CAD/BIM plugin found[1]A macOS screenshot companion is described. It is not a model-aware CAD or BIM plugin. |
| Professional workflow advantages | ||
| Editable 3D and floor planning | Model viewer and image capture; no floor-plan generator | Browser floor-plan and editable 3D Studio[3] |
| Image or text to 3D asset | No | Yes, 3DGen[4][1] |
| Video and public API | No | Video tools; REST API on Ultra[6][7] |
[1] Options depend on the selected model. Aspect ratio is Create-only. Quality is available on GPT Image 2.
Price context: green marks the lowest listed starting-price figure, not a like-for-like value ranking. Currencies, annual-effective billing, credits, tax, seats and plan limits differ. Check each source access date before purchase.
Choose between a still-render workbench and a broader design suite
Choose CAD Scene when
Architects who already model elsewhere and want Create, Enhance, and named-region Edit with shared Project Composition.
Choose Luw.ai when
Designers and homeowners who need interior or exterior redesign plus browser floor planning, 3D generation, video, or API.
Pressure test the actual brief
Compare the task after the first image
Use one source view for still rendering, then test the breadth that separates the products.
How does one composed model view become a review image?
Luw.ai
3 steps
- Open Render AI and upload the 3D screenshot.
- Choose a style or prompt the intended result.
- Generate, then inspect the image against the source.
CAD Scene
3 steps
- Open an Enhance study and attach the screenshot.
- Apply the Project Composition and choose Render settings.
- Generate options, compare them in the Feed, and revise if needed.
Decision point: Both accept a flat source image. CAD Scene adds shared Project Composition and a study record around the still.
Where CAD Scene fits
CAD Scene is a focused architectural still-render workbench. Create, Enhance, and Edit share one Project Composition across separate studies.
That structure suits architects who already model elsewhere and need a clear review record. Named Edit regions, Presets, versions, model choice, durable jobs, and free Lanczos 4K stay around each image.
- Keep one visual direction across several project studies.
- Choose an image model and its native settings per render.
- Return after tab close to server-side render jobs.
- Review named local changes without rebuilding the whole image brief.
Where Luw.ai fits
Luw.ai covers a broader home and design workflow. Its tools span interior and exterior redesign, sketch rendering, local image edits, image-to-3D generation, video, and conversational guidance.
Luw.ai Studio goes beyond still images. The official page describes an editable, measurable 3D floor plan, furnishing, walk mode, CAD export, rendering, and project sharing in one browser surface.
- Choose it when floor planning and editable 3D are part of the task.
- Use the brush editor for one selected image area.
- Use 3DGen when the deliverable includes an exportable 3D asset.
- Consider Ultra when API access is a procurement requirement.
A screenshot companion is not a model-aware plugin
Luw.ai describes a macOS screenshot companion for capturing regions. The reviewed official pages do not document a native Revit, SketchUp, Rhino, or Blender plugin that reads active model objects and materials.
Both products can begin from flat images. Luw.ai additionally offers its own browser 3D Studio. Choose a direct CAD or BIM plugin when active-view model context is the deciding requirement.
Luw.ai pricing and output rights need a plan check
As reviewed on August 4, 2026, Free provides two daily credits. Unused daily credits do not carry over. Free output is 512×512, watermarked, and limited to non-commercial use by the current product and pricing copy.
Pro is listed at $19 monthly for 200 renders. Max is $39 for 500. Ultra is $79 for 1,200 and adds API access. Paid cards list 4K, no watermark, all AI tools, and a commercial license. Tax is excluded.
One-time token packs unlock the listed Max features and remain valid for 12 months. They can be used individually or by a team.
An older official blog makes broader ownership claims than the current product and pricing pages. We did not locate a governing terms page during this review. Confirm current rights before client or commercial use.
Test the still workflow and the broader suite separately
Start with the same clean 3D screenshot and written direction. Compare camera, crop, massing, openings, repeated elements, material boundaries, entourage, and artifacts. Treat Luw.ai fidelity language as a vendor claim until your scene confirms it.
Then test the reason to choose the broader suite. In Luw.ai, build or import a small floor plan, inspect measurable 3D output, make one brush-selected edit, and verify the required export. In CAD Scene, run Enhance, a named Edit, a second study with the same Composition, and a free 4K upscale.
Record the plan, credits, resolution, watermark, and commercial-rights path used for the accepted output. Do not compare the first image alone.
Useful questions
- Is Luw.ai only an architectural rendering tool?
- No. Its current suite also covers home redesign, floor planning, editable 3D, 3D asset generation, video, sharing, and API access.
- Which tool is narrower?
- CAD Scene is narrower by design. It centers architectural still-image studies and keeps Create, Enhance, Edit, Composition, Presets, and render history inside one Project.
- Can free Luw.ai output be used commercially?
- Current product and pricing copy says Free output is watermarked and non-commercial, while paid plans include a commercial license. Confirm the current governing terms before client use.
Compare the wider field
Read the best AI rendering tools for architects for the narrative shortlist. For the category workflow and review checks, use the AI architectural rendering guide. Or return to the comparison hub.
Sources and review dates
Competitor facts use public product and pricing pages. Check the linked pages for changes after the access date.
Official product and workflow pages
- Luw.ai product overviewAccessed
- Luw.ai web application tool catalogAccessed
- Luw.ai StudioAccessed
- Luw.ai image-to-3D toolAccessed
- Luw.ai ArchiGPTAccessed
Official pricing and platform access
- Luw.ai pricingAccessed
- Luw.ai API dashboardAccessed