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CAD · head to head

Bentley MicroStation vs Zoo

Bentley MicroStation logo

Bentley MicroStation

CAD

CAD and modelling platform for infrastructure design, and the file format the rest of Bentley runs on

From
$2284/year
Rated
-
Full reviewWebsite
Zoo logo

Zoo

CAD

Cloud CAD with a scripting language and a geometry engine exposed as an API

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Zoo has a free tier, so it costs nothing to try first.
  • Each has a real cost: Bentley MicroStation bentley licensing has a history of usage-based true-ups, where running the software beyond your entitlement is permitted at the time and invoiced later, so finance teams get bills nobody in the design office authorised.; Zoo the geometry engine runs entirely in Zoo's cloud and there is no offline mode, so an aircraft, a customer site with no guest wifi or an outage stops modelling work completely.
  • They diverge on capability: Bentley MicroStation covers DGN modelling, Zoo covers KCL scripting.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Bentley MicroStation and Zoo actually diverge.

Attributes where Bentley MicroStation and Zoo differ
AttributeBentley MicroStationZoo
Starting price$2284/yearFree
Pricing modelPer user per yearPer user per month
Free tierNoYes
PlatformsWindowsWeb, Windows, macOS, Linux, API

Identical on both: user rating (Not yet rated), category (CAD).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Bentley MicroStation

  • DGN modelling
  • DWG editing
  • Reality modelling
  • Parametric components
  • Drawing composition
  • Visualisation
  • MDL and .NET APIs
  • iTwin publishing

Only in Zoo

  • KCL scripting
  • Design Studio
  • Design API
  • Zookeeper agent
  • Format conversion
  • Open source client

What people use each for

The jobs each tool is most often brought in to do.

Bentley MicroStation

  • A civil consultancy bidding on state DOT or national highways work that mandates DGN deliverables and issues a MicroStation workspacenot Zoo
  • A rail or utility owner-operator maintaining decades of legacy DGN drawings that would lose data in a DWG round tripnot Zoo
  • An engineering firm standardising on OpenRoads or OpenBuildings, which require the MicroStation platform underneathnot Zoo
  • A survey or asset team draping design geometry over point clouds and reality meshes for existing-conditions worknot Zoo

Zoo

  • A hardware startup that wants part models reviewed in pull requests alongside firmwarenot Bentley MicroStation
  • A software team generating thousands of parametric part variants programmatically rather than by handnot Bentley MicroStation
  • A SaaS product that needs to render and convert customer CAD files without licensing a geometry kernelnot Bentley MicroStation
  • An engineer who models occasional brackets and enclosures and does not want a four figure annual seatnot Bentley MicroStation

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Bentley MicroStation

  • Bentley licensing has a history of usage-based true-ups, where running the software beyond your entitlement is permitted at the time and invoiced later, so finance teams get bills nobody in the design office authorised.
  • It is Windows only, with no macOS or Linux build and no browser client, which rules it out for studios that have standardised on Mac hardware.
  • The user base is far smaller than AutoCAD's, so hiring a MicroStation operator is harder and slower in most markets and contract staff command a premium.
  • Value depends almost entirely on whether your clients mandate DGN; outside infrastructure and government work you are paying several times the price of mainstream CAD for a format nobody asks you for.
  • Agency workspaces, seed files and configuration variables make deployment a specialist job, and a firm working for several agencies ends up maintaining multiple incompatible configurations.

Zoo

  • The geometry engine runs entirely in Zoo's cloud and there is no offline mode, so an aircraft, a customer site with no guest wifi or an outage stops modelling work completely.
  • STEP and SLDPRT import are still labelled experimental, which means the most common way of receiving a supplier or customer model is the least reliable path into the tool.
  • Drawing production, GD&T and tolerance annotation are far behind SolidWorks, Creo and NX, so most users still need a second package to release a manufacturing drawing.
  • Zookeeper is billed in reasoning minutes rather than per seat, so a team cannot forecast next month's bill from headcount the way it can with conventional CAD subscriptions.
  • The open source label applies only to the Design Studio client; the kernel that does the modelling is closed and hosted, so forking the repository does not give you a product you can run yourself.

Pricing, plan by plan

Bentley MicroStation

$2284/year
  • Virtuoso Subscription$2284/year
    • Single-user MicroStation licence
    • Bentley Keys redeemable for training, mentoring or consulting
    • Bought through Bentley's eStore with a card
  • Practitioner or Enterprise licence$undefined/year
    • Term or perpetual licence sold direct by Bentley
    • Perpetual purchase requires an ongoing SELECT maintenance subscription
    • Volume and enterprise agreements with pooled licence usage

Zoo

Free
  • FreeFree
    • Design Studio access
    • About 20 minutes of Zookeeper reasoning per month
    • Around $10 of API calls included
  • Plus$20/month
    • Roughly 400 Zookeeper minutes per month
    • Pay as you go beyond the allowance
    • Design Studio and API access
  • Pro$99/month
    • Unlimited Zookeeper reasoning
    • Higher API allowance
    • Priority support

Which should you pick?

Choose Bentley MicroStation if

  • You need dgn modelling.
  • You work on Windows.
  • You also want dwg editing.
Bentley MicroStation review

Choose Zoo if

  • You need kcl scripting.
  • You want to start without paying.
  • You work on Web, Windows, macOS, Linux, API.
  • You also want design studio.
Zoo review

Questions people ask

Is Bentley MicroStation or Zoo better?
Neither clearly leads. Bentley MicroStation starts at $2284/year and Zoo at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Bentley MicroStation or Zoo?
Zoo has a free tier; the other does not. Paid plans start at $2284/year for Bentley MicroStation and Free for Zoo.
Does Bentley MicroStation or Zoo run on more platforms?
Bentley MicroStation runs on Windows. Zoo runs on Web, Windows, macOS, Linux, API.
Can I use Zoo for free?
Yes. Zoo has a free tier, so you can try it without paying. Bentley MicroStation starts at $2284/year.
What is Bentley MicroStation best used for?
Bentley MicroStation is most often used for a civil consultancy bidding on state dot or national highways work that mandates dgn deliverables and issues a microstation workspace, a rail or utility owner-operator maintaining decades of legacy dgn drawings that would lose data in a dwg round trip, an engineering firm standardising on openroads or openbuildings, which require the microstation platform underneath, a survey or asset team draping design geometry over point clouds and reality meshes for existing-conditions work. Of those, a civil consultancy bidding on state dot or national highways work that mandates dgn deliverables and issues a microstation workspace and a rail or utility owner-operator maintaining decades of legacy dgn drawings that would lose data in a dwg round trip are not what Zoo is typically brought in for.
What can Bentley MicroStation do that Zoo cannot?
Bentley MicroStation covers DGN modelling, DWG editing, Reality modelling, Parametric components. Zoo covers KCL scripting, Design Studio, Design API, Zookeeper agent.

Answered from the vendors’ own pages

Bentley MicroStation: Can MicroStation open and save DWG files?

Yes, it edits DWG natively rather than importing it. Fidelity is good but not perfect on complex dynamic blocks and some annotation styles, so a DWG-mandated deliverable is still safer produced in AutoCAD.

Zoo: Is Zoo the same company as KittyCAD?

Yes. KittyCAD renamed itself Zoo; the GitHub organisation is still KittyCAD and the scripting language KCL keeps the old initials.

Bentley MicroStation: Is there still a perpetual licence?

Yes, Bentley still sells perpetual licences alongside term and Virtuoso subscriptions, but a perpetual licence needs an annual SELECT subscription to receive updates and support, so it is not a one-off cost.

Zoo: Can I use Zoo without an internet connection?

No. The geometry engine is a cloud service, so Design Studio needs a live connection to model anything.

Bentley MicroStation: Do I need MicroStation if I have OpenRoads Designer?

No. The Open products include the MicroStation platform, so buying both separately is duplicate spend.

Zoo: Is Design Studio free?

There is a genuine free tier with a small monthly allowance of AI reasoning and API calls. Paid plans start at $20 per month.

Bentley MicroStation: What is a Bentley Key?

A prepaid token bundled with a Virtuoso subscription that you redeem for training, mentoring or consulting hours. Unused keys are a real cost if nobody in the team books the sessions.

Zoo: Can I replace SolidWorks with Zoo?

Not for drawing release, large assemblies or GD&T. Teams typically use Zoo for programmatic part generation and keep an established package for production documentation.

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