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For those who don’t know the tool: Cascadeur is Nekki’s standalone character-animation application for keyframing, editing imported motion and applying AI-assisted posing, interpolation and physics tools. It exchanges animation with Blender, Autodesk Maya, Autodesk 3ds Max, Unity and other DCCs through FBX, DAE, USD and glTF-family formats, while a dedicated Live Link connects supported versions of Unreal Engine.
Additive animation layers
The headline addition is Animation Layers, currently labelled as an alpha. It separates an object’s motion into multiple layers, each storing its own animation data. Cascadeur adds the enabled layers together during playback to form the resulting motion.
This is an artist-facing layer system rather than a new motion-generation algorithm. The attraction is non-destructive separation. Animators could keep locomotion on a base layer and isolate corrections, offsets or secondary performance on additional layers. That is a workflow interpretation, not a guarantee that every such use case is implemented in the alpha. Nekki explicitly describes this as the first iteration and says more functionality will follow.
Studios should also establish what happens when layered animation leaves Cascadeur. The application commonly transfers work through FBX, COLLADA, OpenUSD and glTF, but the preview does not specify whether additive layers remain editable entities, are flattened automatically or require an explicit bake before export.
Easing moves onto the timeline
The new Easing controls adjust motion spacing within a selected timeline interval. In animation terms, they alter how quickly the interpolated motion travels through sections of the interval without changing the documented endpoint poses.
The controls appear directly on timeline intervals after the animator enables the Easing button. An animator can adjust a keyframe’s easing weight to redistribute the interpolated trajectory and can reset selected easing weights to their defaults. This is a manual timing control, not an AI process. It complements Cascadeur’s interpolation modes by exposing timing manipulation in context instead of requiring another trip through a separate editor.
The distinction is useful. Easing changes the rate at which an interpolation is traversed. It does not, by itself, establish that the generated poses, contacts or centre-of-mass behaviour are physically correct. Cascadeur’s existing AI Inbetweening documentation makes a similar distinction: generated motion follows key poses and timing, but the result is not always physically accurate and may need physics tools or manual correction.
For shot work, Easing should make it quicker to refine accents, holds and acceleration without manufacturing additional keys solely to reshape temporal spacing. It may also make timing edits more legible to another animator opening the scene later, assuming the easing data survives the studio’s chosen handoff and bake process.
Environmental posing and contact cleanup
Cascadeur 2026.2 extends AutoPosing around environmental interaction. Nekki says hands and feet now adjust to surrounding geometry, while quadruped AutoPosing has been improved.
Collision Penetration Cleaning now considers fulcrums. It is also included by default in an AutoPhysics pass when the scene uses the ground or kinematic colliders. Cascadeur defines colliders as rig or environmental objects used when calculating character interaction, including by Collision Penetration Cleaning, while AutoPhysics provides a physics-derived alternative that animators can compare with their authored motion.
This does not remove the need for correctly fitted collision shapes or sensible fulcrum placement. It does reduce the number of separate cleanup operations an animator may have to remember after running AutoPhysics, which is useful because hidden pipeline state is rarely improved by adding another button that everyone assumes somebody else pressed.
Languages and viewport controls
Cascadeur’s desktop interface gains Korean, Chinese and Japanese language packs, selectable from the upper-right corner of the application. More languages are planned for later releases. Localisation affects interface access and training deployment, but does not change scene compatibility or animation data.
The interface update also adds separate alpha controls for isometric grid lines and the grid background, plus independent colours for trajectory sections before and after the current frame. These are display controls rather than changes to trajectory calculation.
New camera exposure settings place ISO, shutter speed and aperture parameters in Scene Settings. Environment-light intensity also receives a slider in addition to its numerical field. Cascadeur uses the Filament renderer for viewport scene visualisation and physically based materials.
Textures are now deprecated in favour of Materials. A single mesh can use several materials, and imported objects containing multiple materials should retain all of them instead of recognising only one. This is primarily a viewport and scene-fidelity improvement. It does not imply that Cascadeur has become a look-development package, but it should reduce visual mismatches when animators receive characters whose material assignments help distinguish eyes, clothing, armour or body regions.
Python receives a visible front end
Cascadeur 2026.2 allows custom UI elements to be created through PySide and QML. That is distinct from merely exposing additional API methods. PySide gives pipeline developers a route to build windows and controls that artists can operate, while the API remains responsible for the operations behind those controls.
Python stub files are also included to support code completion and type discovery in compatible IDEs. Stubs improve authoring and reduce time spent guessing signatures, but they do not expand API coverage on their own. Cascadeur’s current API documentation describes its coverage as uneven and concentrated heavily around rig generation and rigging-tool implementation.
The release also adds what Nekki calls a simple MCP server, accessible through an MCP section in the Scripts menu. The preview notes do not publish its transport, authentication, exposed tools, permission model or supported Model Context Protocol capabilities. It should not yet be treated as a documented production integration merely because the menu item exists. Security reviews have enough work without granting “simple” the status of a threat model.
Exchange and Unreal Engine
Cascadeur remains a standalone application rather than an animation plug-in hosted inside another DCC. Its public documentation covers import and export through FBX, DAE, USD and glTF-family formats, with the proprietary CASC format retaining complete Cascadeur scene data. The Free edition exports only CASC, while paid plans add common interchange formats.
For realtime production, the Cascadeur Live Link plug-in streams matching joint transforms to Unreal Engine. The current version supports Unreal Engine 5.5 through 5.8 with Cascadeur 2026.1 or later. That is documented compatibility, not a claim that every custom rig, Control Rig setup or project plug-in combination is certified.
Before deployment, test Cascadeur 2026.2 on representative production assets, including layered scenes, custom rigs, material-heavy meshes, environmental contacts, interchange round trips and studio Python tools.
The public release is expected between 4 and 6 August 2026.
Link Citation Block:
www.nekki.com
www.cascadeur.com
https://cascadeur.com/help/release_notes
| Product | Cascadeur |
| Developer | Nekki |
| Version | 2026.2 |
| Release status | Nekki expects public release between 4 and 6 August 2026 |
| Current public build | 2026.1.3, released 2 June 2026 |
| Editions | Free, Indie, Pro and Teams |
| Host compatibility | Standalone application; documented Unreal Live Link support covers Unreal Engine 5.5 to 5.8 with Cascadeur 2026.1 or later |
| Operating systems | Published requirements list Windows 10 version 1809 or later, Windows 11, Ubuntu 20.04 to 22.04.1 and macOS 13.3 or later |
| Minimum hardware | 64-bit multicore CPU or Apple M-series, SSE4.1, 2.4 GHz, 4 GB memory, NVIDIA GTX 550 Ti or better and OpenGL 4.1 support |
| Processing backend | AI tools run locally; Filament handles viewport rendering. |
| Formats | CASC; paid export includes FBX, DAE, USD and GLTF. Documentation also covers GLB, GLTF and VRM import; 2026.2 adds animation-only BVH import |
| Licence models | Free non-commercial; Indie commercial below US$100,000 annual revenue or funding; Pro commercial without that ceiling; Teams subscription for managed multi-user deployment |
| Trial | 14-day Pro trial, non-commercial under the EULA |
| Update entitlement | Active subscriptions receive current releases and patches. Annual Indie and Pro plans convert to perpetual access for eligible released versions; monthly and Teams plans do not |
| Documentation | Cascadeur documentation |
| Python API | API reference |
| Download | Official download page |
| Pricing | Free: $0; Indie: $19/month or $8/month billed annually; Pro: $49/month or $33/month billed annually; Teams: $49/user/month or $33/user/month billed annually (Cascadeur) |
