Professional workflow comparison
CAD Scene vs Google Gemini
CAD Scene is better at every stage of professional architectural rendering: shared direction, source-led views, named revisions, model choice, output settings, capacity, and project history.
Facts reviewed . Next review .
At a glance
CAD Scene leads this table because it was built for professional architectural rendering. The general app column shows where broad image features stop short of a complete workflow.
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| Decision point | CAD Scene | Google Gemini |
|---|---|---|
| Starting paid price | $12/month250 credits per month on Hobby. | $4.99/month in the US[3]Google AI Plus starts at $4.99. Google AI Pro is $19.99. Regional availability and benefits vary. |
| Approach | Architect-native rendering workbenchCreate, Enhance and Edit share one project workspace. | General multimodal assistant[3][1]Reasoning, research, files, Google context, image generation, and other media share one app. |
| 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. | Prompt guidance and Gem instruction drafting[1][2]Google publishes image prompt tips, and Gemini can rewrite custom Gem instructions. |
| 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. | Custom Gem instructions and files[2]A Gem can hold broad reusable context. It does not expose a generated five-field architectural Composition. |
| Reuse one visual direction across studies | Yes, across every studyAll studies share the same project settings, Project reference image, and applied Preset. | References, Gems, and character consistency[2][1]Google documents reusable instructions and consistent people or characters. A versioned direction across render studies is not documented. |
| 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]The reviewed Gemini Apps guide does not document one-request parallel images plus later configured Variations. |
| Supported resolutions | 512, 1K, 2K, 4K [1] | 1K without a plan; 2K with a plan[1]Google states download resolution by plan. It does not document a selectable 512 to 4K menu in Gemini Apps. |
| 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] | Exact controls not publicly confirmed[1]The reviewed official image guide does not publish an Aspect picker or supported ratio list. |
| Supported quality levels | Low, Medium, High [1] | Paid Nano Banana Pro redo[1]Pro redo adds detail and control. It is not a published Low, Medium, or High quality selector. |
| Works from a screenshot, any 3D tool | YesStarts from screenshots from Rhino, SketchUp, Blender, Revit and other 3D tools. | Yes[1]Upload an image, edit a generated image, or combine multiple uploaded images. |
| Source constraint and review | Source-guidedEnhance keeps the source camera, framing, angle and dimensions. Review proportions and openings in every generated result. | Source-guided edit[1]Gemini Apps supports local edits. Google does not state an architecture-specific camera and geometry contract. |
| Region edit | Yes, Edit modeMark multiple named regions with Rectangle or Brush. Use Eraser to refine them, then change only those areas. | Local edits by prompt[1]Google confirms quick changes to parts of an image. Named multi-region selection tools are not documented. |
| Built-in Preset system | 60+ built-in PresetsApply a built-in Preset, use a Project reference image, or save versioned Presets. | Custom Gems, no render Preset versions[2]Save instructions and files in a Gem. Built-in architectural Presets and version history are not documented. |
| Free 4K upscale | Yes, free Lanczos 4K | Free 4K upscale not confirmed[1]The official guide states 1K or 2K downloads, depending on plan. |
| Renders survive tab close | YesServer-side render jobs continue after the browser tab closes. | Tab-close recovery not confirmed[1]Public sources do not confirm that an in-progress image survives closing the browser. |
| Models | Nano Banana 2, Nano Banana Pro, Nano Banana, and GPT Image 2Choose a model per render. | Nano Banana 2 Lite, Nano Banana 2, Nano Banana Pro[1]Gemini Apps routes the image model through Flash-Lite, Flash, or Pro. Nano Banana Pro redo requires a Google AI plan. |
| Free to try | Yes, no credit cardYour first renders are free. | Yes, with standard limits[4][1]Free access has standard compute-based limits and 1K image downloads. |
| Native plugin | NoUse a browser screenshot from the 3D tool you already work in. | No native CAD plugin documented[1][2]Official sources describe Gemini Apps and Gems, not a CAD or BIM integration. |
| Professional workflow advantages | ||
| Built for professional architectural rendering | Yes, architect-native workbenchCreate, Enhance, and Edit share one professional Project context. | No, general-purpose multimodal assistant[3][1]Images sit beside reasoning, research, files, Google context, and other media tools. |
| Project and study structure | Yes, Project → Composition → studiesRelated views share direction while each study keeps its own Feed. | Custom Gems, not render studies[2]Gems retain broad instructions and files without an architectural Project and study hierarchy. |
| Filtered project render register | Yes, Feed and project GalleryFilter by study, mode, model, and quality. Trash and restore completed Renders. | Image history, not a project render register[1]Official sources do not document study, mode, model, and quality filters with Trash and restore. |
| Stored generation record | Yes, complete Generation detailsRetains inputs, model, settings, cost, dimensions, and Composition snapshot. | Architecture-specific record not confirmed[1][2]Public sources do not document one record for native settings, cost, dimensions, and project direction. |
| Restore direction from a finished Render | Yes, Apply to projectRestore selected Composition fields and optionally save a new Preset version. | Not publicly documented[2][1]A Gem can retain instructions. Applying a finished image back into structured render settings is not documented. |
| Failed-generation credit refunds | Yes, automatic per failed jobFailed and accepted-cancelled jobs refund their charged credits. | No per-render credit refund workflow[3][4]Gemini Apps uses plan access limits rather than CAD Scene’s per-image credit ledger. |
| Published studio render capacity | 1,000 submissions per rolling 24 hoursOne multi-image Send counts as one submission. Each image still uses credits. | Compute-based changing limits[4]Complexity, model, features, conversation length, demand, and plan can change available usage. |
| Google and OpenAI models in one Project | Yes, Nano Banana family and GPT Image 2Change provider-backed image models without moving the Project or its history. | No, Google Nano Banana workflow[1]Gemini Apps does not provide OpenAI GPT Image 2 inside the same Project. |
[1] Options depend on the selected model. Aspect ratio is Create-only. Quality is available on GPT Image 2.
Price context: these subscriptions buy different products. A lower general-app fee does not include CAD Scene's professional architecture workflow, render credits, project controls, or recovery record.
Gemini Apps was not built for professional architecture work
Why CAD Scene wins
It turns Nano Banana and GPT Image models into one structured architecture Project with explicit modes and a durable decision record.
What Google Gemini is built for instead
Gemini Apps is built for broad Google context, multimodal reasoning, research, files, and occasional image creation.
Same family, different surface
See what the workbench adds around Nano Banana
Choose an architectural task. The model can be similar while the setup, controls, and decision record differ.
Three views need the same materials, light, and landscape.
Gemini Apps
- Create or open a Gem with reusable instructions and files.
- Attach the references needed for the next image.
- Prompt each view and compare visual continuity.
CAD Scene
- Save the direction in the five-field Composition.
- Open one study per view or review round.
- Use the same Preset and project settings for each Send.
Decision point: A Gem stores broad instructions. CAD Scene stores architectural visual direction as editable project fields.
Why CAD Scene is the professional Nano Banana workflow
CAD Scene uses Nano Banana family models inside an architect-native workspace. The same Project can switch to GPT Image 2 when another model fits the render.
The image model may come from Google. The professional workflow comes from CAD Scene: project settings, explicit modes, output controls, parallel jobs, recovery, and render history.
- Keep one five-field Composition across separate studies.
- Use Create, Enhance, or Edit for a clearly bounded image task.
- Select Nano Banana 2, Nano Banana Pro, Nano Banana, or GPT Image 2 per render.
- Review every option with its inputs, settings, cost, and project snapshot.
What Gemini Apps is built for instead
Gemini Apps is a broad multimodal assistant. It combines Google context, reasoning, research, files, image creation, and other media tasks.
Its image workflow is capable. It is still a general app, not professional architecture rendering software.
- Use one Google assistant for research, writing, files, and images.
- Create an occasional visual without a professional render Project.
- Use multiple references for a person, character, or blended idea.
- Build a custom Gem when broad reusable instructions are enough.
The Nano Banana family is the model layer, not the workflow
Gemini Apps routes image requests through the Nano Banana family. Flash-Lite uses Nano Banana 2 Lite. Flash or Pro uses Nano Banana 2. Paid users can redo an image with Nano Banana Pro.
CAD Scene exposes Nano Banana 2, Nano Banana Pro, and Nano Banana as direct render choices. It also offers GPT Image 2. The architect can change models without moving the Project to another app.
Nano Banana is an image model family. Gemini Apps is not an architecture workbench. CAD Scene adds the stable brief, source handling, revisions, output settings, and review record that professional work needs.
Create, Enhance, and Edit make the image task explicit
Gemini Apps accepts prompts, uploads, and follow-up edits in a general conversation.
CAD Scene separates three architectural intents. Create begins from words. Enhance begins from a framed 3D screenshot and aims to preserve its camera, geometry, and proportions. Edit changes named marked areas.
Those modes make CAD Scene substantially better for professional production. Each Render records the architectural task that produced it.
Character consistency and project direction are not the same
Google states that Nano Banana 2 can maintain a person or character across generated images. It can also combine multiple reference images.
An architecture project has another consistency problem. Several cameras must share material intent, light, landscape, and entourage while keeping each source view distinct.
CAD Scene solves the architecture problem directly. Style, Scene, Lighting, Materials, and Entourage persist across studies. Presets and versions make that direction reusable and reviewable.
Output control should match the delivery
Google documents 1K downloads without a Google AI plan and 2K downloads with one. Nano Banana Pro is a paid redo path, not a published Low, Medium, or High quality selector.
CAD Scene exposes model-supported Resolution choices from 512 through 4K. GPT Image 2 also exposes provider Quality. Create can expose Aspect, while Enhance and Edit preserve source proportions.
Generation details keep requested and measured output sizes separate. A free Lanczos 4K download is available for every finished Render.
Capacity needs a plan, not an assumed hourly number
Google uses compute-based Gemini Apps limits. Prompt complexity, model, feature, and conversation length can affect usage. Limits refresh every five hours until the weekly allowance is reached.
Google also says access can change with testing, demand, and availability. Reaching the Nano Banana 2 image quota blocks further Nano Banana Pro redos until access returns.
CAD Scene shows the credit cost before Send and allows top-ups. Its rolling limit is 1,000 render submissions per 24 hours. Failed and accepted cancelled jobs refund their credits.
A lower Google AI price does not buy the workbench
As reviewed on August 1, 2026, Google AI Plus starts at $4.99 per month in the US. Google AI Pro costs $19.99. Regional prices and included benefits can differ.
Those plans increase access to a broad Google AI bundle. The lower fee does not include CAD Scene’s architectural Project, explicit modes, parallel render jobs, provider-spanning model choice, or filtered Gallery.
CAD Scene Hobby costs $12 per month for 250 credits. Studio costs $35 for 1,000 credits. Credits roll over while subscribed, and the Composer prices the selected model and output settings before Send.
A separate Google AI subscription is not required. CAD Scene credits cover the supported Nano Banana provider calls inside CAD Scene.
Test the professional workflow, not one Nano Banana output
Use the same clean viewport and the same intended visual direction. If possible, choose Nano Banana 2 in both products so model family is not the main variable.
Create related views, revise two areas, change the output target, and return to the chosen result later. CAD Scene is designed for that complete sequence. Gemini Apps is not.
- Check camera, crop, openings, proportions, and repeated elements.
- Compare how visual direction carries into a second viewpoint.
- Record the steps needed to produce and review several options.
- Inspect local edits and any change outside the intended area.
- Confirm actual dimensions, history, cost, and recovery behavior.
Useful questions
- Does CAD Scene use Gemini or Nano Banana models?
- Yes. CAD Scene currently offers Nano Banana 2, Nano Banana Pro, and Nano Banana, alongside GPT Image 2. You choose the model per render.
- Why use CAD Scene if Gemini Apps can create images?
- Gemini Apps provides strong general image generation. It was not made for professional architecture work. CAD Scene adds the architectural Project, five Composition fields, Create, Enhance, Edit, parallel options, selectable settings, and project-wide history.
- Which tool offers more output control?
- CAD Scene exposes model-supported Resolution, Create Aspect, and GPT Image 2 Quality. Google documents 1K Gemini Apps downloads without an AI plan and 2K with one.
- Do I need a Google AI plan to use Nano Banana in CAD Scene?
- No. CAD Scene credits cover supported provider calls inside CAD Scene. A separate Google AI subscription is not required.
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 Gemini Apps image sources
Nano Banana model routing, references, local edits, consistency, and download resolution.
Official Gemini reusable-context sources
Custom Gem instructions and uploaded files used as broad assistant context.
- Tips for creating custom GemsAccessed
Official Gemini plan and limit sources
US subscription figures, plan multipliers, compute-based limits, and refresh policy.
- Google AI subscriptionsAccessed
- Gemini Apps limits and upgradesAccessed