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ANSYS Fluent vs Inventor

ANSYS Fluent logo

ANSYS Fluent

CAD

Computational fluid dynamics solver for turbulence, combustion and multiphase flow

From
On request
Rated
-
Full reviewWebsite
Inventor logo

Inventor

CAD

Professional-grade 3D mechanical design

From
$29/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: ANSYS Fluent solver seats and HPC packs are licensed separately, and the packs scale by core count, so the cost of running a large case in parallel can exceed the base licence several times over and is the line item that surprises first-time buyers.; Inventor pricing shown as template variables on the page, suggesting dynamic or region-specific pricing
  • They diverge on capability: ANSYS Fluent covers Turbulence model library, Inventor covers Parametric modeling.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which ANSYS Fluent and Inventor actually diverge.

Attributes where ANSYS Fluent and Inventor differ
AttributeANSYS FluentInventor
Starting priceOn request$29/month
Pricing modelquotesubscription
PlatformsWindows, LinuxWindows
FoundedUnknown1982

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 ANSYS Fluent

  • Turbulence model library
  • Combustion and reacting flow
  • Multiphase flow
  • Meshing
  • HPC parallel solving
  • Fluent aero and native GPU solver
  • Ansys Workbench integration
  • User-defined functions

Only in Inventor

  • Parametric modeling
  • Assembly design
  • Sheet metal
  • Simulation
  • Rendering
  • Technical documentation
  • Frame generator
  • AutoCAD

What people use each for

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

ANSYS Fluent

  • Certifying an aerospace component where the customer specification names a validated commercial CFD solvernot Inventor
  • Predicting thermal performance of a data centre or electronics enclosure before committing to a mechanical designnot Inventor
  • Combustion analysis for a gas turbine or industrial burner where detailed chemistry models are requirednot Inventor
  • A consultancy that must hand a client an auditable analysis in a tool the client's own engineers can reopennot Inventor

Inventor

  • Mechanical designnot ANSYS Fluent
  • Product developmentnot ANSYS Fluent
  • Manufacturing documentationnot ANSYS Fluent

Where each one falls short

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

ANSYS Fluent

  • Solver seats and HPC packs are licensed separately, and the packs scale by core count, so the cost of running a large case in parallel can exceed the base licence several times over and is the line item that surprises first-time buyers.
  • Ansys does not publish any pricing, and quotes vary widely by region, industry and negotiating position, so a smaller firm has no way to know whether it is being charged fairly relative to a large account.
  • Synopsys completed its acquisition of Ansys in July 2025 and started shipping combined capabilities in 2026; packaging, bundling and account teams are changing, and buyers on multi-year agreements should expect renewal terms to be renegotiated on a different basis.
  • Getting trustworthy results demands genuine CFD expertise in meshing, turbulence model selection and convergence assessment, so the licence is useless without a specialist, and the specialist is harder to hire than the software is to buy.
  • Licences are typically served from a network licence manager, which means concurrent-use contention inside a busy simulation group; engineers queue for solver tokens, and organisations end up buying spare seats purely to avoid the queue.

Inventor

  • Pricing shown as template variables on the page, suggesting dynamic or region-specific pricing
  • No clear pricing information readily available on the overview page

Pricing, plan by plan

ANSYS Fluent

On request
  • Ansys Fluent$undefined/year
    • Annual lease or paid-up perpetual licence
    • Solver seats licensed separately from HPC parallel packs
    • HPC packs priced by core count and scale multiplicatively

Inventor

$29/month
  • Inventor$2085/month
    • Full mechanical design
    • Simulation
    • Documentation
  • Product Design & Manufacturing Collection$2475/month
    • Inventor + AutoCAD + more

Which should you pick?

Choose ANSYS Fluent if

  • You need turbulence model library.
  • You work on Windows, Linux.
  • You also want combustion and reacting flow.
ANSYS Fluent review

Choose Inventor if

  • You need parametric modeling.
  • You work on Windows.
  • You also want assembly design.
Inventor review

Questions people ask

Is ANSYS Fluent or Inventor better?
Neither clearly leads. ANSYS Fluent starts at On request and Inventor at $29/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ANSYS Fluent or Inventor?
ANSYS Fluent starts at On request and Inventor at $29/month.
Does ANSYS Fluent or Inventor run on more platforms?
ANSYS Fluent runs on Windows, Linux. Inventor runs on Windows.
What is ANSYS Fluent best used for?
ANSYS Fluent is most often used for certifying an aerospace component where the customer specification names a validated commercial cfd solver, predicting thermal performance of a data centre or electronics enclosure before committing to a mechanical design, combustion analysis for a gas turbine or industrial burner where detailed chemistry models are required, a consultancy that must hand a client an auditable analysis in a tool the client's own engineers can reopen. Of those, certifying an aerospace component where the customer specification names a validated commercial cfd solver and predicting thermal performance of a data centre or electronics enclosure before committing to a mechanical design are not what Inventor is typically brought in for.
What can ANSYS Fluent do that Inventor cannot?
ANSYS Fluent covers Turbulence model library, Combustion and reacting flow, Multiphase flow, Meshing. Inventor covers Parametric modeling, Assembly design, Sheet metal, Simulation.

Answered from the vendors’ own pages

ANSYS Fluent: How much does Fluent cost?

Ansys does not publish pricing. Expect an annual lease per solver seat plus separately licensed HPC packs for parallel cores, with the total for a serious capability running into six figures a year.

Inventor: How much does Autodesk Inventor cost?

Autodesk Inventor pricing is not displayed on the overview page. Monthly and annual subscription options are available, including single-year and multi-year terms. Customers can access pricing through their Autodesk Account or contact sales.

Source
ANSYS Fluent: Is Fluent still an Ansys product?

Yes, but Ansys is now part of Synopsys following the acquisition that completed in July 2025, and the two portfolios are being combined.

Inventor: Is there a free trial for Autodesk Inventor?

Yes, Autodesk offers a 30-day free trial of Inventor. You can start your project and try the software for free during this period.

Source
ANSYS Fluent: Can OpenFOAM do the same job?

Numerically it can cover a lot of the same physics at no licence cost, but it lacks the meshing workflow, support and the validation pedigree that certification and customer specifications often require.

ANSYS Fluent: Is there a free version?

There is a student edition with cell count limits, suitable for learning but not for production work.

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