The rapidly growing field of gravitational wave (GW) astronomy finally allows us to test general relativity (GR) in the dynamical, strong-field regime of a coalescing compact binary system. The detection and parameter estimation of these events crucially relies on providing accurate waveform templates to the LIGO-Virgo-KAGRA Collaboration, or to its successors in the next decade (such as the Einstein Telescope, the Cosmic Explorer and LISA). Yet, libraries of such waveform templates only exist in GR to this day.