STKO Pro for Engineering Practice
Nonlinear by design.
Ready for engineering practice.
Built on the proven STKO/OpenSees nonlinear foundation, STKO PRO helps engineering teams apply advanced analysis to professional workflows, from Performance-Based Design to clearer project deliverables.
STKO Pro helps engineering teams apply advanced nonlinear analysis to professional workflows and clearer project deliverables.
Nonlinear by design.
Ready for practice.
Research-proven foundation
STKO PRO brings the nonlinear foundation behind STKO into professional workflows for advanced engineering practice.
Maintenance
Choose the support level for upgrades
and technical assistance after year one.
Curated and defensible
A selected library of tested, recognized and documented components for decisions that can stand up to review.
AI-native
AI assistance operates inside the model through MCP, with every action visible and the engineer always in command.
CORE FEATURES
All the essentials,
in one toolkit
STKO simplifies the entire
OpenSees workflow,
from building models
to analyzing results.
Structural Analysis, earthquake engineering, Seismic Design, opensees software, Engineering Software
Nonlinear-first foundation
Nonlinearity isn’t a checkbox.
It’s the foundation.
Nonlinearity isn’t a checkbox. It’s the foundation.
Most structural software starts from linear analysis, with nonlinear capabilities added later as an advanced option. STKO PRO takes the opposite approach: it builds professional engineering workflows on a proven nonlinear foundation.
STKO Pro builds professional engineering workflows on a proven nonlinear foundation, instead of treating nonlinearity as an advanced add-on.
STKO - Scientific Toolkit for OpenSees
Advanced nonlinear
structural analysis
STKO combines OpenSees’ scientific power
with a modern CAD interface, automation,
and advanced visualization.
WORKFLOW
From advanced modeling to repeatable professional workflows
STKO PRO is designed to reduce repetitive setup work, make modeling decisions more defensible and help engineering teams move from model definition to verified results with less friction.
STKO Pro is a dedicated product for professional teams that need faster, repeatable and review-ready nonlinear workflows.
Turn setup time into engineering time.
The value is not only speed. STKO PRO helps make complex setup more repeatable, controlled and analysis-ready, giving engineers more time for project decisions.
Professional setup,
not one-off modeling.
Loads, constraints, analysis presets and model-definition workflows are organized to support repeatable engineering practice.
A curated library for decisions you can defend.
A selected environment of tested, recognized and documented components helps professional teams make modeling decisions that can stand up to internal review, peer review and project delivery.
Detect structural levels faster
STKO PRO helps reduce manual interpretation by recognizing key structural levels and turning them into editable workflow inputs, so engineers can move faster without losing control.
WORKFLOW
From advanced modeling to repeatable professional workflows
STKO PRO is designed to reduce repetitive setup work, make modeling decisions more defensible and help engineering teams move from model definition to verified results with less friction.
STKO Pro is a dedicated product for professional teams that need faster, repeatable and review-ready nonlinear workflows.
Turn setup time into engineering time.
The value is not only speed. STKO PRO helps make complex setup more repeatable, controlled and analysis-ready, giving engineers more time for project decisions.
Professional setup,
not one-off modeling.
Loads, constraints, analysis presets and model-definition workflows are organized to support repeatable engineering practice.
A curated library for decisions you can defend.
A selected environment of tested, recognized and documented components helps professional teams make modeling decisions that can stand up to internal review, peer review and project delivery.
Detect structural levels faster
STKO PRO helps reduce manual interpretation by recognizing key structural levels and turning them into editable workflow inputs, so engineers can move faster without losing control.
MCP-powered assistance
AI assistance that works
where the model lives
In STKO PRO, AI assistance is designed to operate inside the model workflow rather than as a separate chatbot. Through MCP, actions remain visible, reviewable and always under the engineer’s control.
AI assistance that works where the model lives
Core-integrated AI
AI assistance is built into the model workflow, not placed beside it as a separate tool.
MCP-based workflow
Through MCP, AI assistance can help turn plain-language engineering instructions into visible, step-by-step actions inside the model.
Engineer-led automation
AI supports the workflow, while review, validation and final decisions remain with the engineer.
Proven in research and practice
Trusted by engineers
and universities
STKO is already powering research projects, academic courses, and professional workflows. From classrooms to real-world structures, it’s recognized as the most advanced toolkit for
nonlinear analysis with OpenSees.
Licensing
A professional core, designed to grow with your workflow
STKO PRO is structured around a professional annual license, with optional add-ons and optional extensions planned to extend the core around specific domains, checks and workflows.
STKO Pro core
Annual professional license
The core license should communicate the essential value of STKO Pro: nonlinear-first analysis, professional workflows, AI/MCP assistance, PBD delivery and results visualization.
Nonlinear engine
Modeling environment
Baseline workflow automation
Curated component library
Pre/Post-processing
PBD workflows
Results & visualization
AI/MCP assistance
Add-onS
Coming soon
Code checks
ASCE and Eurocode checks are planned to support future verification workflows, according to the confirmed product roadmap.
Coming soon
Geotechnical module
A geotechnical add-on is planned to support future workflows involving soil, foundations and structural response.
Coming soon
Optional extensions
Vertical packages, workflow-specific modules and additional professional capabilities can extend the core according to project needs.
STKO Pro is structured around a professional annual license, with optional add-ons and vertical packages planned to extend the core around specific domains, checks and workflows.
Licensing
A professional core, designed to grow with your workflow
STKO Pro core
Annual professional license
The core license gives professional teams access to the essential STKO PRO capabilities for nonlinear analysis, structured workflows, AI/MCP assistance, PBD delivery and results visualization.
Nonlinear engine
Modeling environment
Baseline workflow automation
Curated component library
Pre/Post-processing
PBD workflows
Results & visualization
AI/MCP assistance
Report-ready images & animations
Professional-quality figures and animations help communicate structural behavior in reports, presentations and reviews, turning advanced analysis results into clear visual material for technical communication.
Export clear figures and animations to communicate structural behavior in reports, presentations and technical reviews.
Report-ready visuals
Interactive 3D results exploration
STKO PRO inherits the proven STKO results environment, allowing engineers to explore deformed shapes, color maps and time histories interactively on the 3D model, a natural way to understand nonlinear response.
Explore deformed shapes, color maps and time histories directly on the 3D model to better understand nonlinear response.
3D results exploration
Practice-ready deliverables
Outputs are designed to support project documentation, with plots, tables and reports that can move more directly into engineering submissions instead of remaining as raw analysis data to be post-processed by hand.
Plots, tables and reports are designed to move more directly into engineering documentation and submissions.
Everyday analyses included
STKO PRO is oriented to Performance-Based Design, but it also supports everyday code-based workflows such as modal, response spectrum and linear static analyses, making it a daily tool, not a specialist sidecar.
STKO Pro also supports modal, response spectrum and linear static analyses, making it useful beyond specialist PBD workflows.
Performance verification
Computed responses such as storey drifts, deformations and component demands can be checked against the performance targets defined for the project, supporting clearer engineering evaluation and decision-making.
Check drifts, deformations and component demands against project performance targets for clearer engineering evaluation.
Nonlinear static & dynamic workflows
Pushover and response-history analyses are available as structured workflows, helping engineers approach the two core analysis families required by PBD without turning them into expert-only procedures.
Structured pushover and response-history workflows help engineers run core PBD analyses without turning setup into an expert-only process.
Nonlinear workflows
PBD workflows
Performance-based design, industrialized
STKO PRO brings nonlinear analysis, performance verification and results visualization into a structured workflow for engineering teams that need to assess how structures behave under realistic demands and turn that analysis into defensible project deliverables.
Performance-based
design, industrialized
Performance-based
design, industrialized
Structured pushover and response-history workflows help engineers run core PBD analyses without turning setup into an expert-only process.
Check drifts, deformations and component demands against project performance targets for clearer engineering evaluation.
STKO Pro also supports modal, response spectrum and linear static analyses, making it useful beyond specialist PBD workflows.
Plots, tables and reports are designed to move more directly into engineering documentation and submissions.
Explore deformed shapes, color maps and time histories directly on the 3D model to better understand nonlinear response.
Export clear figures and animations to communicate structural behavior in reports, presentations and technical reviews.