Opengl 3.3
Gl es 3.0
Vulkan : none
Gtk4 with ngl works for my config since gtk 4.18 (it was mostly unusable before). Don’t know if it uses llvm though. It ‘feels’ slightly slower than old gl, but not much. Really few glitches from time to time, but nothing bad.
Only big companies change their computer every 5 or 7 years 