Equation 2 · Part 2 · What Independent Evidence Actually Supports About Grok's Capabilities
subscript
subscript
What this part means
The lower label selects a particular version, component, or indexed member of the quantity. For example, x₀ and xₜ can be values at different positions.
Its job in the formula
A subscript distinguishes a version, component, step, or member of a quantity. It does not automatically mean multiplication.
Full expression→subscript→Article meaning
The passage around this formula
where each is a model’s normalized score on component benchmark i and each is a weight chosen by whoever maintains the index. That weight vector is an editorial decision, not a discovered fact, and two indices built from different component sets or different weights are measuring different constructs even when both are called “intelligence.” This is why Artificial Analysis’s own tracked numbers for Grok’s generations — 19 for Grok 3, 34 for Grok 4, and rising to 61 for Grok 4.6 as of its 12 August 2026 write-up [ 8 , 9 ] — should not be expected to match any single headline figure from an xAI launch post, and their disagreement in scale is not evidence that either party is wrong. It…
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
Open the illustrated subscripts: which member of a family? guide →
Sources cited in the surrounding passage
These citations provide research context; check each source for the exact claim it supports.