3D-Agent vs AiCadGen

3D-Agent and AiCadGen are both 3d generation tracked by AIDiveForge. Below is a side-by-side comparison of pricing, capabilities, platforms, and ownership — sourced from each tool's live website and verified before publishing.

3D-Agent

The plugin reads your active Blender viewport, generates geometry from a plain-language prompt, and lets you refine iteratively with follow-up messages that build on existing geometry rather than starting over. The vendor claims quad-dominant topology and clean UV unwrapping, which matters the moment you try to rig or drop the mesh into Unity, Godot, or Roblox — AI blobs with broken edge flow cost more time to fix than they save. Export hits OBJ, FBX, GLB, and USDZ without leaving Blender. The ceiling appears when your prompt demands something structurally complex: the model is only as good as what the underlying AI generation service can resolve, and there is no API or self-hosted path if you need to control that pipeline.

AiCadGen

The core workflow is prompt-in, parametric-geometry-out: the vendor states the AI writes parametric code, runs it in a sandbox, and produces STEP, STL, DXF, OBJ, or PDF output — not a mesh render pretending to be CAD. Chat refinement handles incremental edits without reopening a feature tree. The system covers parts, multi-part assemblies with per-part STEP files and a mate-intent manifest, and floor plans with MEP overlays to AS1100, ISO, and ASME standards. The free tier runs on a credit pool, so complex or repeated generations will exhaust credits before a project is production-ready. Teams with high iteration volume hit the credit ceiling and move to a paid tier or reconsider the workflow entirely.

Attribute	3D-Agent	AiCadGen
Pricing	Paid	Paid
Price	$10/mo	from $12/mo
Free trial	No	No
Open source	No	No
Has API	No	Yes
Self-hosted option	No	No
Platforms	Windows (10+), macOS (12.0+); requires Blender 4.2+	Web
Released	2026-03	—
Pros	Viewport-aware iterative prompting, so follow-up messages build on existing scene geometry rather than wiping the canvas — you stay in your Blender session instead of copy-pasting between tools. Quad-dominant topology and clean UV unwrapping on generated meshes, which means the output loads into Unity, Godot, or a renderer without a manual retopology pass that would erase the time saved. Plain-English Blender Python scripting with a preview-before-execute step, so lighting rigs, modifier stacks, and batch operations that used to require scripting knowledge become prompt tasks — with a safety check before anything runs. Export to OBJ, FBX, GLB, and USDZ directly from Blender, so the asset delivery step doesn't require a separate conversion tool or format negotiation with the client. Text-driven keyframe animation covering walk cycles, camera flythroughs, and character rigs, so motion blocking for a prototype doesn't require an animator before you've validated the concept.	Five export formats (STEP, STL, DXF, OBJ, PDF) from a single generation, so a maker can send the STL to a slicer and the STEP to a machine shop without a conversion step in between. Chat-based iteration updates geometry in plain English rather than requiring feature-tree edits, which means a design revision that previously cost thirty minutes of sketch debugging resolves in seconds. Multi-part assembly output includes a mate-intent manifest alongside per-part STEP files, so the exported package carries structural intent rather than forcing the receiving engineer to reconstruct relationships manually. MEP overlay generation works from an uploaded PDF or photo of an existing plan, which means architects and drafters can layer HVAC, electrical, or structural services onto a scanned drawing instead of redrawing from scratch. A free credit tier with no card requirement lets students and makers validate the tool against a real design brief before committing, which avoids the common trap of paying for a seat to discover the output quality doesn't match the use case.
Cons	Complex or structurally precise geometry — specific polygon budgets, hard-surface mechanical parts with tolerance requirements, or branded product shapes — exceeds what a text prompt can reliably specify, and the output requires manual correction that narrows the time advantage over modeling it directly. No API and no self-hosted option means teams cannot integrate asset generation into a build pipeline, enforce data residency, or call generation programmatically from a script; teams with those requirements replace this with a generation API they can hit directly from their toolchain. The plugin is Blender-only, so studios or developers working primarily in Maya, Cinema 4D, or a proprietary DCC tool have no integration path and would need to treat Blender as an intermediary step — adding a format conversion and import round-trip to every asset.	The free tier runs on a shared credit pool: iterating on a mechanical assembly across multiple refinement rounds consumes credits fast, and a hardware startup prototyping several variants of a bracket in one session will hit the ceiling before the design is final — the path forward is a paid tier or rationing generations. Exported STEP geometry arrives as a dumb solid inside SolidWorks, Fusion 360, or Creo — the parametric code that generated it stays inside AiCadGen's sandbox and does not export, so any team that needs an editable feature tree in their existing CAD environment rebuilds the part from scratch; at that point AiCadGen is a sketch reference, not a workflow accelerator. The platform is cloud-only with no self-hosted option, which disqualifies it for any team under a data residency policy, a defense contract with export-control requirements, or an enterprise IT policy that prohibits sending proprietary geometry to third-party cloud services — those teams route to self-hosted open-source CAD generation alternatives instead. Standards-aware drawing output targets AS1100, ISO, and ASME, but the vendor page does not describe a drawing validation or tolerance checking step — a mechanical engineer submitting to a contract manufacturer needs to audit every generated drawing before it becomes a purchase order, adding a manual review gate that the tool's speed advantage does not eliminate.

Bottom line

Only AiCadGen exposes a public API. Choose based on which difference matters most for your workflow.

Frequently asked questions

What is the difference between 3D-Agent and AiCadGen?

3D-Agent is Paid, while AiCadGen is Paid. Compare pricing, free trial, API, platforms, and pros/cons in the table above on AIDiveForge.

Is 3D-Agent better than AiCadGen?

It depends on your workflow. Use the side-by-side attributes (pricing, open source, API, self-hosted, platforms) to decide. AIDiveForge does not rank a universal winner — we publish verified facts so you can choose.