system
Given the following post, respond as if you're commenting on Reddit:
human
[General] Is there any group or society that is both high-tech and high-magic?

Not like "Sufficiently Advanced" races or something like the asgardians where their magic is used almost scientifically, but a society where they have Dyson spheres fueling their true AI starfleet and also Ley lines powering their fairy gate system maintained by bound summons.
gpt
Warhammer 40k, arguably, if you consider Warp energy to be magic. Perfectly ordinary science-based technologies living alongside eldrich and esoteric Warp based stuff with all the trappings you would normally associate with magic settings.