Run by the Opus hand on neo (Apple A18 Pro, 8 GB, CPU only, 2 torch threads),
2026-09-21, against the preregistration at
~/arianna/_notes/PREREG_toaster_duel_netta_vs_nanogpt_2026-09-21.md.
Everything below was measured on this machine by this hand, with one exception that is labelled where it appears: the netta.c row is Don's measurement, carried here, not re-run by me.