Explore the evolution of inspiraling supermassive black hole binaries in 3D-GRMHD simulations through this conference talk by Mark Avara from Cambridge. Delve into the complexities of circumbinary gas dynamics, observational signatures, and numerical modeling techniques for binary systems ranging from stellar to supermassive black holes. Gain insights into the similarities between massive black hole binaries and stellar binaries, and learn about recent advancements in observations and simulations. Examine topics such as radiative winds, previous research, colloidal dynamics, tilts, and initial conditions. Understand the importance of interdisciplinary collaboration in pushing the boundaries of astrophysical knowledge across varied scales.