Available Now — STK 12.1

November is always a wild time of year. We’re all hopped up on pumpkin spiced everything, our sleep schedules are askew because of Standard Time, and the holidays are rushing toward us like a freight train. But just in case you weren’t breathless and excited enough, AGI has some big news today: STK 12.1 has been released!

Learn more

Select new STK 12.1 features:

  • New visualization enhancements, including support for complex glTF 3D model animations. Watch this three-minute video overview.

  • HF skywave propagation for STK Communications and STK Radarthrough a direct integration of the VOACAP model. Learn more in this 20-minute webinar.

  • More high-fidelity propagation options for STK Astrogator, including the N-plate atmospheric drag model to match the SRP model that we introduced in STK 11.7. We’ve also added variable area for both the drag and SRP models.

  • Hypersonic thermal-load analysis for STK Aviator.

  • Create standard STK objects from STK Aviator catalog data, including aeronautical data points in DAFIF and ARINC datasets.

  • Native support for Scalable Network’s Exata network emulator, including a refreshed QualNet interface that is now called the Scalable Networks Simulation Interface. Learn more in this 30-minute webinar.

  • A native Python API for integration with STK and STK Engine. This is a cross-platform API, so you can reuse code for STK Engine on Windows or Linux without modification.

Systems Tool Kit (STK)

Modeling and simulation software for digital mission engineering and systems analysis.


Model real-world flight operations and aircraft performance.


Model and analyze real-world dynamic RF and optical communications.