zetta

Definition

The SI prefix for 10^21 — one step above exa (10^18) and one below yotta (10^24). In this field it appears mainly as "zettascale," describing compute budgets or machines a thousand times beyond today's exascale supercomputers. No such machine exists, so the word marks a roadmap target or an extrapolation of training-compute trends rather than a capability anyone can currently buy.

Explainers using this term

• Paper walkthrough: Zetta ζ — a robot harness that repairs itself mid-execution, with the policy frozenZetta $ζ$: An Efficient Closed-Loop Embodied Harness for Self-Evolving Physical Intelligence