Softwr

CAD · head to head

COMSOL Multiphysics vs Siemens NX

COMSOL Multiphysics logo

COMSOL Multiphysics

CAD

Finite element simulation built around coupling physics, with add-on modules licensed separately

From
On request
Rated
-
Full reviewWebsite
Siemens NX logo

Siemens NX

CAD

Integrated product design and manufacturing

From
$29/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: COMSOL Multiphysics the base licence covers very little on its own and nearly every practical problem needs one or more add-on modules, each priced separately, so the quoted total is typically a multiple of the headline base figure.; Siemens NX siemens NX offers only a 30-day free trial with no published subscription or perpetual license price; buyers must go through a sales process to get pricing, per the vendor's own product page.
  • They diverge on capability: COMSOL Multiphysics covers Coupled multiphysics solving, Siemens NX covers Advanced CAD.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which COMSOL Multiphysics and Siemens NX actually diverge.

Attributes where COMSOL Multiphysics and Siemens NX differ
AttributeCOMSOL MultiphysicsSiemens NX
Starting priceOn request$29/month
Pricing modelquotesubscription
PlatformsWindows, Linux, macOSWindows, Linux
FoundedUnknown1963

Identical on both: free tier (No), 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 COMSOL Multiphysics

  • Coupled multiphysics solving
  • Equation-based modelling
  • Add-on module library
  • Application Builder
  • COMSOL Compiler and Server
  • CAD import and LiveLink
  • Parametric sweeps and optimisation
  • Cluster and cloud computing

Only in Siemens NX

  • Advanced CAD
  • CAM programming
  • CAE simulation
  • Additive manufacturing
  • Sheet metal
  • Mold design
  • Industrial machinery
  • Teamcenter PLM

What people use each for

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

COMSOL Multiphysics

  • Modelling a device where physics are strongly coupled, such as induction heating that changes material properties which change the fieldnot Siemens NX
  • Research work needing custom partial differential equations that no packaged solver in a mainstream tool providesnot Siemens NX
  • Packaging a validated model as an app so process engineers can run studies without learning the simulation toolnot Siemens NX
  • A department wanting shared concurrent access via a Floating Network Licence, with cluster runs at no extra licence costnot Siemens NX

Siemens NX

  • Enterprise product designnot COMSOL Multiphysics
  • Manufacturingnot COMSOL Multiphysics
  • Simulationnot COMSOL Multiphysics

Where each one falls short

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

COMSOL Multiphysics

  • The base licence covers very little on its own and nearly every practical problem needs one or more add-on modules, each priced separately, so the quoted total is typically a multiple of the headline base figure.
  • Perpetual licences renew maintenance at 20% of the then-current price each year, and because that percentage applies to the whole module stack the annual bill grows as your module list does and as list prices rise.
  • No pricing at all is published, so procurement cannot benchmark or budget without a sales engagement, and comparisons against Ansys or SolidWorks Simulation are effectively impossible before that point.
  • Named Single-User and CPU-locked licences do not share, so a team of six that bought individual licences ends up with idle seats while a Floating Network Licence would have covered them, and switching licence type is a commercial renegotiation.
  • Solving strongly coupled systems is memory hungry and slow, and models that look modest in the GUI routinely need tens of gigabytes of RAM, so hardware cost is a real and often underestimated part of adoption.

Siemens NX

  • Siemens NX offers only a 30-day free trial with no published subscription or perpetual license price; buyers must go through a sales process to get pricing, per the vendor's own product page.

Pricing, plan by plan

COMSOL Multiphysics

On request
  • COMSOL Multiphysics base licence$undefined/year
    • CPU-locked, Named Single-User or Floating Network licence types
    • Perpetual or term licensing
    • Perpetual includes updates and support for 12 months, then renews at 20% of current price
  • Academic licences$undefined/year
    • Class Kit Licence for up to 30 concurrent users per class
    • Academic Server Licence for up to 300 concurrent app users
    • Quote through the academic sales channel

Siemens NX

$29/month
  • NX Design$4500/month
    • CAD design
    • Core modeling
  • NX CAM$5500/month
    • Manufacturing programming
  • NX Complete$8500/month
    • Full suite
    • CAD/CAM/CAE

Which should you pick?

Choose COMSOL Multiphysics if

  • You need coupled multiphysics solving.
  • You work on Windows, Linux, macOS.
  • You also want equation-based modelling.
COMSOL Multiphysics review

Choose Siemens NX if

  • You need advanced cad.
  • You work on Windows, Linux.
  • You also want cam programming.
Siemens NX review

Questions people ask

Is COMSOL Multiphysics or Siemens NX better?
Neither clearly leads. COMSOL Multiphysics starts at On request and Siemens NX at $29/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, COMSOL Multiphysics or Siemens NX?
COMSOL Multiphysics starts at On request and Siemens NX at $29/month.
Does COMSOL Multiphysics or Siemens NX run on more platforms?
COMSOL Multiphysics runs on Windows, Linux, macOS. Siemens NX runs on Windows, Linux.
What is COMSOL Multiphysics best used for?
COMSOL Multiphysics is most often used for modelling a device where physics are strongly coupled, such as induction heating that changes material properties which change the field, research work needing custom partial differential equations that no packaged solver in a mainstream tool provides, packaging a validated model as an app so process engineers can run studies without learning the simulation tool, a department wanting shared concurrent access via a floating network licence, with cluster runs at no extra licence cost. Of those, modelling a device where physics are strongly coupled, such as induction heating that changes material properties which change the field and research work needing custom partial differential equations that no packaged solver in a mainstream tool provides are not what Siemens NX is typically brought in for.
What can COMSOL Multiphysics do that Siemens NX cannot?
COMSOL Multiphysics covers Coupled multiphysics solving, Equation-based modelling, Add-on module library, Application Builder. Siemens NX covers Advanced CAD, CAM programming, CAE simulation, Additive manufacturing.

Answered from the vendors’ own pages

COMSOL Multiphysics: Does the base licence include CFD or structural mechanics?

Only limited capability. Serious CFD, structural, RF and acoustics work each require the relevant add-on module at extra cost.

Siemens NX: Does Siemens NX offer a free trial?

Yes, Siemens offers a 30-day free trial of both Designcenter CAD and NX CAM software that is fully functional. Users can get a hands-on feel for the software without any financial commitment before purchasing.

Source
COMSOL Multiphysics: What does maintenance cost?

Perpetual licences include 12 months of updates and support, then renew at 20% of the then-current price per year.

Siemens NX: Is NX free for students?

Yes, Siemens offers free CAD/CAM Student Edition access to Designcenter and NX for students and educators. Academic offerings are available for those in educational institutions.

Source
COMSOL Multiphysics: Which licence type should a team buy?

Floating Network if more than a couple of people use it, since it shares concurrency and includes cluster and cloud computing at no extra charge.

Siemens NX: What licensing options does NX provide for different business sizes?

Siemens offers scalable licensing for startups, mid-size companies, and multinational corporations. Designcenter and NX CAM support flexible team-based licensing to match organizational size and manufacturing needs.

Source
COMSOL Multiphysics: Is pricing published?

No. COMSOL publishes licence types but no prices; every purchase goes through a quote.

Share

Related pages

More on COMSOL Multiphysics

More on Siemens NX

Keep looking

Other head to heads