← Mathematical compendium

Published equation contexts

ttoken  ≳  2 Nactive β+KV(c)BWt_{\mathrm{token}} \;\gtrsim\; \frac{2\,N_{\mathrm{active}}\,\beta + \mathrm{KV}(c)}{\mathrm{BW}}

Why this formula appears here

Underneath all of the pricing mechanics sits a constraint pricing cannot remove: generating one token from a large language model is, for most of a request, bound by how fast bytes can move through accelerator memory rather than by how much arithmetic the accelerator can perform. Producing each token requires reading the model’s active weights and the accumulated key-value cache for that request from memory once; the arithmetic performed per byte read is low, so decoding is memory-bandwidth-bound while only the initial processing of a long prompt is compute-bound, a distinction Pope and colleagues formalized in their analysis of transformer inference efficiency [ 15 ] . Approximately,…

Read the full article-specific guide →

Read the representative guide

ttokent_{\mathrm{token}}

Symbol t_token

ttt_token is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Read this term in its guide →
NactiveN_{\mathrm{active}}

Symbol N_active

NaN_active occurs above the fraction bar. The numerator is divided by the entire denominator below it.

Read this term in its guide →
2 Nactive β+KV(c)2\,N_{\mathrm{active}}\,\beta + \mathrm{KV}(c)

Numerator: 2N_activeβ + KV(c)

The complete quantity above the fraction bar.

Read this term in its guide →

How to interpret it

With a fixed numerator, increasing a nonzero denominator reduces the fraction.

Research cited beside this formula

Published contexts (1)

A symbol can carry a different meaning in another article. Each occurrence keeps its own guide and term definitions.

ttoken  ≳  2 Nactive β+KV(c)BW,t_{\mathrm{token}} \;\gtrsim\; \frac{2\,N_{\mathrm{active}}\,\beta + \mathrm{KV}(c)}{\mathrm{BW}},

Equation 2 · AI Agents & Systems

The Economics, Energy, and Physical Limits of Claude Code and Agentic Development Tools

This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text.

Underneath all of the pricing mechanics sits a constraint pricing cannot remove: generating one token from a large language model is, for most of a request, bound by how fast bytes can move through accelerator memory rather than by how much arithmetic the accelerator can perform. Producing each token requires reading the model’s active weights and the accumulated key-value cache for that request from memory once; the arithmetic performed per byte read is low, so decoding is memory-bandwidth-bound while only the initial processing of a long prompt is compute-bound, a distinction Pope and colleagues formalized in their analysis of transformer inference efficiency [ 15 ] . Approximately,…

Meanings in this article

  • β\beta: the bytes each occupies at the serving precision.
  • cc: the context length.
Equation guide → · Article →