Geotechnical
Design & analysis Software

The first FEM software for integrated 2D & 3D
OPTUM GX is the first geotechnical FEM tool on the market that allows modelling in both 2D (plane strain/axisymmetry) and 3D within the same program. Developed with one clear purpose: to save engineers’ time.
Tailored for geotechnical professionals, it offers a comprehensive suite of material models and analyses, making it ideal for geotechnical modelling, routine engineering calculations, and advanced geotechnical design.
Additionally, the built-in Python scripting development environment enables users to access specialized applications and quickly develop custom plugins.
The program also features a state-of-the-art report generation module, facilitating swift and seamless documentation of analysis results and designs.

Designed to save you time on geotechnical tasks
Compared to G2 and G3, OPTUM GX introduces a range of powerful new analysis features. These include transient seepage analysis in both 2D and 3D, a suite of widely used soil models such as Hardening Soil with Small Strain, and several advanced models for structural elements.
Why wait? Start saving time with GX today
Download your free trial today by creating an account and discover how OPTUM GX can transform your geotechnical modeling and analysis workflow.
Already using G2 or G3?
You can access the full version of OPTUM GX directly from your account page.
2D or 3D? OPTUM GX gives you both – in one powerful FEM tool
In geotechnical engineering, choosing between 2D and 3D often means weighing speed against accuracy.
With GX, there’s no trade-off.
Work seamlessly in both 2D and 3D within one integrated FEM software. Switch views with a single click, optimise your workflow, and cut down on time and cost — without compromising on quality.
Powered by advanced finite element algorithms, GX delivers fast, accurate results — whether in 2D, 3D, or both.
One-Click 2D to 3D Conversion for Analysis in OPTUM GX
Many geotechnical problems can largely be considered 2D, but certain features make a purely 2D approximation inaccurate, for example, a pile-reinforced slope or a square foundation on a retaining wall. While the overall geometry can often be treated as 2D, these additional elements — such as pile rows and square foundations — make the problems inherently 3D.
To achieve the most accurate representation of reality and ensure reliable results, 3D modeling is essential.
With OPTUM GX, you can model the overall geometry in 2D and seamlessly extrude it into 3D, adjusting as needed. That means you save a lot of time!
Extract 2D sections from complex 3D models — instantly
And it works the other way, too.
If you’re working on a large 3D model with complex geometry, you may want to analyse specific sections in more detail, for example, to evaluate Factor of Safety.
With Optum GX, you can instantly extract 2D cross-sections and analyse them using standard plane strain methods.
This allows for fast and reliable sectional analysis — and it's an invaluable tool for quality assurance of complex 3D models.
try A SMARTER WAY TO ENGINEER WITH PYTHON-INTEGRATED GX PLUGIN
Tired of the repetitive grind of setting up geotechnical models with only minor parameter variations? We get it. Reconfiguring the same problem again and again wastes valuable time and breaks your workflow. That’s why we developed a smarter solution that transforms the way engineers handle model setup.
The OPTUM GX plugin for Python lets you automate your project setup — from geometry and materials to loads and boundary conditions — all directly from your script. No more repetitive manual input for every new iteration.
Need even more control?
GX supports custom scripting and automation, allowing advanced users to build tailored solutions, specialized workflows, or even full custom applications — all within the Optum environment.
Here’s what you can do with our GX plugin for Python:
Automate repetitive tasks: Quickly generate multiple project variants without rebuilding from scratch.
Work faster, with less errors: Streamline your workflow and reduce the risk of manual setup mistakes..
- Accelerate iteration and optimization: Make quick modifications and rerun models with ease — perfect for parameter studies and design exploration.
“A past project required 3,000 hours to design 50 berms.
With Au2Rox™ 2.0 in auto mode, the same design was completed in just 3 hours — demonstrating a time-saving factor of 1,000 while using the custom plugin feature in OPTUM GX.”
Webinars
Advanced Solid Modeling for 3D Finite Element Analysis
One of the most time-consuming and error-prone aspects of 3D finite element analysis is geometry definition — in other words, solid modeling. Traditional approaches can be tedious, inflexible, and often rely on frustrating trial-and-error processes for even basic operations.
That’s why we built our solid modelling engine in GX from the ground up — using in-house algorithms that have been rigorously tested.
The result? A robust and intuitive modelling tool that offers unmatched flexibility and ease of use.
Going from 2D to 3D has never been easier.
Switch Between Conversion units: SI and US Customary
The software supports both SI and US customary units — so you can work in the system that fits your project.
Within each system, you can choose from a wide range of unit options for individual parameters. For example, define kPa/MPa or psi/ksi for shear strength, depending on your preference or project standards.
Traditional Approach

Plane strain (2D) analysis is a fast and powerful option in many cases — and often a good starting point.
The Gx Way

When 2D is no longer sufficient, convert your model to 3D with a single click. No need to rebuild geometry — just extend your 2D section into full 3D and continue your workflow.
Save Time With Automated Reporting And Documentation

Tired of spending hours manually documenting your projects? Optum GX automates reporting — saving engineers valuable time and ensuring consistent, high-quality documentation.
The built-in reporting module lets you generate clear and comprehensive reports in just a few clicks.
Each report can be customized and typically includes:
- Geometry sketches
- Material data tables
- Construction stage sequences
- Key results such as deformation plots, force diagrams, and collapse mechanisms
Reports are generated in PDF format and can be further edited as needed.
Pricing

Plane strain and axisymmetry (2D)
3D solid modeling
Steady state groundwater flow
Many material models including HSSmall
Limit analysis and elastoplastic analysis
Python scripting
SI and Imperial units

Full 3D analysis and design
Plane strain and axisymmetry (2D)
Time dependent groundwater flow in 2D and 3D
Fully coupled flow deformation analysis
Many material models including HSSmall
Limit analysis and elastoplastic analysis
Python scripting
SI and Imperial units
System requirements
Operating system
CPU type
64-bit Intel Multicore processor or AMD Athlon 64 processor
Memory
Required: 4GB
Recommended: 8 GB
Display resolution
Basic: 1024 x 768 pixels, 32-bit color palette Recommended: 1920 x 1080 pixels, 32-bit color palette
Disk space
6 GB
.NET framework
.NET Framework Version 4.5.2
MAXIMIZE YOUR SOFTWARE INVESTMENT
In just one day, your engineers will gain a deep understanding of OPTUM GX, allowing for more efficient and seamless use. We recommend starting with a real project you're already working on. This makes the training highly relevant — and helps the software become part of your team’s everyday workflow from day one. The course is more than just onboarding. It’s an investment in your team’s professional development and the successful implementation of your software.
A small effort with a significant return.
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