  The direct coupling between the Higgs field and the spacetime curvature, if
finely tuned, is known to stabilize the Higgs boson mass. The fine-tuning is
soft because the Standard Model (SM) parameters are subject to no fine-tuning
thanks to their independence from the Higgs-curvature coupling. This soft
fine-tuning leaves behind a large vacuum energy $\propto \Lambda_{\rm UV}^4$
which inflates the Universe with a Hubble rate $\propto \Lambda_{\rm UV}$,
$\Lambda_{\rm UV}$ being the SM ultraviolet boundary. This means that the
tensor-to-scalar ratio inferred from cosmic microwave background polarization
measurements by BICEP2, Planck and others lead to the determination of
$\Lambda_{\rm UV}$. The exit from the inflationary phase, as usual, is
accomplished via decays of the vacuum energy. Here we show that, identification
of $\Lambda_{\rm UV}$ with the inflaton, as a sliding UV scale upon the SM,
respects the soft fine-tuning constraint and does not disrupt the stability of
the SM Higgs boson.
