  The $K\to\pi\nu\bar{\nu}$ ultra-rare decays are precisely computed in the
Standard Model (SM) and are ideal probes for physics beyond the SM. The NA62
experiment at the CERN SPS is designed to measure the charged channel with a
precision of 10\%. The statistics collected in 2016 allows to reach the SM
sensitivity. The KOTO experiment at J-PARC aims at reaching the SM sensitivity
before performing a measurement with $\sim100$ signal events. The NA62
preliminary result for the charged channel is presented, together with the
current experimental status of the neutral channel and their prospects for the
coming years.
