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Arnold vs COMSOL Multiphysics

Arnold logo

Arnold

CAD

Advanced Monte Carlo ray tracing renderer

From
$29/month
Rated
-
Full reviewWebsite
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

The short version

  • Each has a real cost: Arnold the Internet Archive's capture of Autodesk's Arnold overview page on 30 December 2022 stated a subscription can be installed on up to 3 computers or devices, though only the named user may run it on one machine at a time, and includes access to the 3 previous major versions.; 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.
  • They diverge on capability: Arnold covers Ray tracing, COMSOL Multiphysics covers Coupled multiphysics solving.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Arnold and COMSOL Multiphysics actually diverge.

Attributes where Arnold and COMSOL Multiphysics differ
AttributeArnoldCOMSOL Multiphysics
Starting price$29/monthOn request
Pricing modelsubscriptionquote
PlatformsWindows, MacOS, LinuxWindows, Linux, macOS
Founded1998Unknown

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 Arnold

  • Ray tracing
  • GPU rendering
  • Production shading
  • OSL
  • Denoising
  • Maya
  • 3ds Max
  • Cinema 4D

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

What people use each for

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

Arnold

  • Film productionnot COMSOL Multiphysics
  • Animationnot COMSOL Multiphysics
  • VFXnot COMSOL Multiphysics

COMSOL Multiphysics

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

Where each one falls short

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

Arnold

  • The Internet Archive's capture of Autodesk's Arnold overview page on 30 December 2022 stated a subscription can be installed on up to 3 computers or devices, though only the named user may run it on one machine at a time, and includes access to the 3 previous major versions.

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.

Pricing, plan by plan

Arnold

$29/month
  • Arnold$360/month
    • Standalone renderer

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

Which should you pick?

Choose Arnold if

  • You need ray tracing.
  • You work on Windows, MacOS, Linux.
  • You also want gpu rendering.
Arnold review

Choose COMSOL Multiphysics if

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

Questions people ask

Is Arnold or COMSOL Multiphysics better?
Neither clearly leads. Arnold starts at $29/month and COMSOL Multiphysics at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Arnold or COMSOL Multiphysics?
Arnold starts at $29/month and COMSOL Multiphysics at On request.
Does Arnold or COMSOL Multiphysics run on more platforms?
Arnold runs on Windows, MacOS, Linux. COMSOL Multiphysics runs on Windows, Linux, macOS.
What is Arnold best used for?
Arnold is most often used for film production, animation, vfx. Of those, film production and animation are not what COMSOL Multiphysics is typically brought in for.
What can Arnold do that COMSOL Multiphysics cannot?
Arnold covers Ray tracing, GPU rendering, Production shading, OSL. COMSOL Multiphysics covers Coupled multiphysics solving, Equation-based modelling, Add-on module library, Application Builder.

Answered from the vendors’ own pages

Arnold: How much does Autodesk Arnold cost?

Autodesk Arnold pricing is not published on the vendor website. Arnold is available through Autodesk subscription plans or standalone licensing. Customers should contact Autodesk directly for pricing quotes.

Source
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.

Arnold: Is Arnold free for educational use?

Yes, Autodesk provides free educational licenses for Arnold to students and educators. Educational access allows learning of professional rendering capabilities at no cost.

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.

Arnold: What does Arnold render?

Autodesk Arnold is an industry-standard photorealistic rendering engine used for visual effects, animation, and design visualization. It supports GPU and CPU rendering with advanced features for film, television, and product design.

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.

COMSOL Multiphysics: Is pricing published?

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

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