computeFieldBudget

computeFieldBudget(fallback, kind): number

Defined in: context.ts:312

Piecewise: identity at or below QUANTIZE_ABOVE, tapered and quantized above it.

Below the frozen boundary this is exactly the historical function — ceil(max(len × 1.3, floor)) — so every schema hash computed by any shipped SDK is stable across releases. Above it, two properties for large fields:

• The multiplier tapers (1.05·len + 125, which equals 1.3·len exactly at len = 500, so the curve is continuous): ±30% of a paragraph is a line, ±30% of 5,000 chars is ~250px of layout shift.
• The result quantizes to steps of 64. The raw budget is in the schema hash, so un-quantized, EVERY character edit re-keys the cache and costs a fresh generation; stepped, a typo stays on the same copy while a new sentence is honestly new.

Server twin: mosaic/services/fragments/fragmentService.ts computeFieldBudget — adopted in the fragments-0.3 release that lifted the caps, byte-identical, held to the shared vectors (including quantized_vectors). The server recomputes and never trusts the client’s number.

Parameters

fallback

string

kind

string

Returns

number