  For $\Lambda$ the category of free opetopic algebras, we construct a model
structure \emph{\`a la Cisinski} on the category of presheaves over $\Lambda$,
and show that is is equivalent to opetopic complete Segal spaces. This
generalizes the results of Joyal and Tierney in the simplicial case, and of
Cisinski and Moerdijk in the planar dendroidal case.
