It’s like with KeyShot.
The Bridge is free to everyone. But the renderer that is accessed by that Bridge has a cost involved.
For technical reasons, Redshift cannot be a perpetual license. It requires too-frequent updates for that to be possible. So it has to be a subscription and therefore cannot be bundled with the perpetual license upgrade.
- Perpetual license ZBrush 2023 users can purchase that subscription separately.
- ZBrush subscribers are being given Redshift CPU as part of the ZBrush subscription. Redshift GPU still requires a Redshift subscription.
- Maxon One subscribers automatically have a Redshift subscription and so they automatically have both Redshift CPU and GPU.
In all cases, Redshift itself must also be installed via the Maxon App. This is important to note because many ZBrush subscribers are upgrading to ZBrush 2023 but not also installing Redshift and are therefore getting an error the first time that they go to use Redshift rendering.