The working surfaces
Pick the mode by the question you are asking, not by the tool you like.
What it does
Canvas builds a single considered frame from sidebar instruments. Playground is an infinite board with a floating prompt bar, the whole model library, workflows and mini-apps. Workbench is a node graph you wire once and re-run. Cinema plans a timed production scene by scene. Board collects research. Midjourney Studio, Studio Apps (Higgsfield) and WebUI (open and local models) run their own engine families. Double-click the main Canvas to open Playground; the upper toolbar then switches between surfaces and Exit returns to Canvas.
What to expect
All surfaces write into the same gallery and obey the same credit and sync rules. Switching modes never loses work already generated.
Use it well
Explore in Playground at low resolution and low count, finish in Canvas at full resolution, and wire anything you have done three times into Workbench.
Related tools
Canvas · Playground · Workbench · Cinema · Board · Midjourney Studio · Studio Apps · WebUI
Cinema adds time on top of any of the three.