To add a bit of clarity about who proved what.
Tristan + Levent: 3d incompressible Euler with forcing
OpenAI: 3d incompressible Euler without forcing
OpenAI: Navier-Stokes with forcing
No one: Navier-Stokes without forcing
Euler equations = Navier-Stokes without viscosity. Forcing means external force. Absence of viscosity and presence of external force make blowup easier to construct. So in the 2x2 grid Tristan+Levent ticked the weakest box, OpenAI ticked the two next weakest, and the strongest is still open.
Navier-Stokes is not over.