Readonlyapproximateroughly what the tier costs a bundle, in megabytes: lite is code, magenta is a model
Readonlytierthe tier this engine implements, as HumanizerFactory.create spells it
nothing heavy to load: the tier is the pass, already in the bundle
humanizes a file and returns the result, leaving midi untouched
Tier 1: every note gets a seeded gaussian nudge plus a slow correlated drift, and nothing else. No grid, no model, no I/O - which is exactly why it is the tier a shipped game can afford to call, and why it has to refuse a groove template rather than quietly ignore one: a template passed here is a caller who picked the wrong tier.
Example