Side by side.
Seven things decide how a deck actually gets made. Here is how each kind of tool handles them.
The two left columns describe a kind of tool, not a named product.
The difference underneath.
Every row in that table comes from one decision: the agent’s vocabulary is the editor’s. It cannot do anything to a deck that you couldn’t do by hand, because the only moves it has are the ones the editor has — move a block, set a heading, add a slide. That is what makes a change a list you can read, a diff you can see and an undo you can press. It is also why the deck the agent leaves behind is one you can keep editing, rather than one you have to regenerate.
Where it’s the wrong tool.
If you want a finished deck from a prompt with nothing to review, a generator will get there faster. If the deck lives in a file your organization has to keep in one particular format, a slide app is the right home for it. Juoni is for decks that get argued over and changed — by you, by the agent, and by the people you send them to.