Version History

Every change, dated.

The model version is stamped on every band. When the methodology changes, the version bumps and it's logged here — so anyone citing a number can say exactly which model produced it.

Changelog

v0.1 Current

Initial publication

Core 8 knowledge hubs published for all 50 states
Modeled baseline live: task time × local labor rate + materials, adjusted by regional index
Bands published as 25th / 50th / 75th percentile ranges
Public API opened at /v1/rate, JSON-LD embedded on every hub page
Invoice correction loop opened for submissions

How versioning works

A version bump means the methodology itself changed — a new input, a revised formula, or a change to how a task is defined.

Band updates from verified invoices do not bump the version. The model stays the same; the data it's fed keeps improving continuously.

Read the methodology → Pull the version via API →