The short version
Two premium smart beds, two philosophies. The Eight Sleep Pod 5 is the biohacker climate-and-tracking layer — aggressive dual-zone cooling, deep HRV, adaptive Autopilot — added to your bed, with a subscription. The Sleep Number Climate360 is a mainstream all-in-one smart bed with adjustable firmness and climate built into the mattress, and mature SleepIQ tracking.
When the Eight Sleep Pod 5 is the right pick
Cooling aggressiveness, HRV depth and adaptive software are the priority, and you want your bed to actively manage recovery. The subscription is the cost of admission.
When the Sleep Number Climate360 is the right pick
You want one integrated smart bed — adjustable firmness per side plus climate, nothing to layer on — with dependable tracking and no membership for the core experience.
Also worth comparing
For the subscription-free climate-only route, see Pod 5 vs ChiliPad Dock Pro. Full field: best smart sleep-climate systems.