guessing it's an SVG path with a stroke-dashoffset draw-on, then a gradient stroke plus a blurred duplicate layer behind it for the glow. clean result either way.
My guess is some kind of SVG path animation with a glow filter layered on top, the way the stroke traces itself feels too clean for pure After Effects noise. Am I close, or completely off?
Love that the answer turned out to be Framer's Logo Shader; that self-tracing pink glow fooled half the thread into guessing SVG dashoffset or After Effects. How much tweaking of the shader settings did it take to get the loop that smooth?
"Tonight's queue: Late Night Drive" is such a great mood. It feels like a real curated experience rather than just a random playlist. The UI is super sleek.