Cesium Releases in November 2026
This month’s Cesium releases make it easier to build design-driven applications that connect engineering models with real-world context and turn design data into actionable information. New and enhanced capabilities automatically generate clipping footprints, query and calculate quantities from engineering data, navigate complex models through model hierarchies, and measure more precisely with snapping. Together, these updates reduce manual work and give developers more powerful ways to build interactive workflows around infrastructure design data. Look for an in-depth blog post and tutorials later this week.
If you’re at FOSS4G NA in Sacramento, join us at 4:30 p.m. PST on Tuesday, November 3, for Gabby’s talk, and stop by the Cesium table to chat with the team.
Cesium ion APIs enable a new generation of design-driven applications, such as this rebar takeoff for a proposed bridge design, showing calculated bar counts, weights, and lengths. Model courtesy JMT.
Gabby Getz and Luke McKinstry are at FOSS4G NA in Sacramento, California, USA.
We made improvements across Cesium this month. To get notifications about our monthly releases, you can subscribe to the Cesium release roundup thread on our community forum.
CesiumJS 1.147 release
CesiumJS 1.147 is now available. This month's release includes new support for Cesium ion's Element Service, allowing easy access to new APIs for querying and performing calculations on BIM/CAD model properties and to build BIM-style tree views for end user navigation. It also includes several bug fixes and memory management improvements.
Highlights include:
@cesium/core
- Fixed undeclared dependencies
earcut,mersenne-twister, andurijs. #13955
@cesium/engine
- Added experimental
IonAssetElementServicefor querying, filtering, aggregating, and navigating element metadata for Cesium ion assets backed by BIM/CAD databases, along with the extensibleElementServicebase class.#13995 - Added support for glTF models with the KHR_materials_emissive_strength extension to improve control over the lighting pipeline. #13961
- Fixed
czm_passOverlayandczm_passCesium3DTileEdgesDirectGLSL constants not matchingczm_passduring their respective passes. Removed the unusedczm_passClassificationconstant. #13657 - Fixed dynamic environment lighting on models and tilesets near or below the ellipsoid surface. #13988
- Fixed
pointCloudShading.backFaceCullingnot hiding back-facing points on some platforms. #13989 - Fixed
Cesium3DTilesetrepeatedly loading and unloading the same tiles when they don't fit withincacheBytesplusmaximumCacheOverflowBytes. #13999
Cesium ion SDK
- Added edge snapping to all measurement tools. Snapping is enabled by default, can be temporarily disabled while placing points, and supports optional server-side refinement for BIM/CAD assets.
For more details, see the changelog.
Two emissive models with different emissive strengths, showcasing the new support for the KHR_materials_emissive_strength glTF extension. Models courtesy Khronos Group.
Cesium for Unreal 2.31.0 release
Cesium for Unreal v2.31.0 is now available. Highlights of this release include:
- Added a button to refresh the Blueprint style instance on
CesiumFeaturesMetadataComponent, allowing it to apply changes in Editor and at runtime. - Fixed compile errors when building the plugin from source with Unreal Engine's unreachable-code warnings treated as errors.
- Fixed an out-of-bounds access in
UCesiumGeoJsonObjectBlueprintLibrary::GetObjectAsMultiLineString.
Check the Cesium for Unreal release and the Cesium for Unreal Samples release for the full list of updates.
New York City 3D Buildings in Cesium for Unreal, streamed from Cesium ion and styled by building ownership through Blueprints.
Cesium for Unity 1.26.1 release
Cesium for Unity v1.26.1 is now available. This release updates cesium-native from v0.65.0 to v0.66.0, which includes bugfixes such as:
- Fixed potential integer overflow and out-of-bounds write while decoding glTFs with
EXT_meshopt_compression. - Fixed potential heap overflow and added other safeguards when decoding Draco-compressed glTFs.
See the changelog for a complete list of changes in cesium-native.
Check the Cesium for Unity changelog for the full list of updates, and follow our Cesium for Unity tutorials to get started.
Cesium for Omniverse 0.30.0 release
Cesium for Omniverse v0.30.0 is now available. Highlights of this release include:
- Breaking change: Cesium for Omniverse now requires a C++ 20 compiler. For Windows builds, MSVC 14.29 is required.
- Updated to Cesium Native v0.65.0.
- Cesium for Omniverse no longer provides its own certificates; instead, it uses a list of common search paths for various OSs to locate certificates.
Peruse the changelog for the full list of updates, and get started with our Cesium for Omniverse tutorials.
Cesium ion SaaS
- Now in General Availability: Cesium ion BIM/CAD tiler and iModel import from Bentley Infrastructure Cloud. In combination with other features in this and recent releases, Cesium is enabling a new generation of design-driven applications. Look for a blog post and tutorials later this week.
- The Cesium ion Asset Elements query routes have advanced to General Availability. Enhancements make more engineering data available for querying across supported design formats. With a more complete view of each element, applications can make greater use of the original design information across querying, visualization, and calculation workflows. Corresponding CesiumJS JavaScript wrappers make it easy to use these routes in your applications.
- Added experimental API routes to build familiar BIM-style tree views in end user applications. A corresponding CesiumJS JavaScript wrapper makes it easy to use in your applications.
- Added "Clipping assist" to Cesium ion. For geolocated 3D Tiles assets with mesh data, select the asset in My Assets and choose "Clipping assist" in the right-hand details pane. Cesium ion will create a clipping polygon and save it as a new GeoJSON asset. This generated suggestion is a starting point, so review the clip's boundaries before use. You can also create clips via API.
Tilers
- Fixed an issue where an invalid CRS could cause a crash rather than reporting an error.
- 3D Tiling Pipeline: Fixed an issue on Windows where certain filesystem checks would fail for paths with non-ASCII characters.
The Cesium ion clipping assist feature created a generated clip of your 3D Tiles model.
CNN journalists worked with Kayhan Space to verify Russian satellite capabilities and behavior. Kayhan Space's Satcat uses CesiumJS.
Rockpile Solutions uses CesiumJS to fuse drone scans, Bing Maps, and precise GPS positioning for real-time 3D tracking of earthworks fleets.
TruGolf uses Cesium for Unreal to fuse custom and global datasets, placing virtual golf courses in their exact real-world locations for an immersive player experience.
The student-run Space Technologies Laboratory at Embry-Riddle Aeronautical University is using Cesium Moon and Cesium for Unreal to test the camera system on EagleCam 2.0 before it flies on the IM-3 mission—and takes the first lunar selfie.