CCIR Compute Credit Index Research
Documents · Change Log · as published 2026-07-18

Methodology Change Log

The record of changes to what the published series measure. Pending changes are announced with an estimated impact and a comment window; the realized impact is appended at the effective fixing. CCIR series are forward-only — no restatements. The Change Management Policy governs classification. Comments: research@ccir.io.

v2.2.1 — two sources proposed for the on-demand rate panel; one member retired

Two neocloud-class sources are proposed for the on-demand rate panel. One is a subsidiary of an existing member with a materially different live rate card, admitted as a separate venue (no splice). Estimated impact: the two entries largely offset (−3.0% and +5.0% alone). Realized with/without publishes at the effective fixing. Comments through 2026-07-22: research@ccir.io.

Amended 2026-07-16: one panel member is retired from the roster at the same fixing. The member has published no purchasable rates since before the panel froze and has never contributed an observation to a published cell; no series is affected.

v2.2.0 — two sources added to committed-term cells

Two sources with firm published term prices (1/3-month and 3-year tenors) join the committed-term cells. Enhanced per-region capture of hyperscaler reservation pricing (1/3/5-yr) begins as a cross-check surface with no separate panel vote. On-demand rows from term sources enter no on-demand cell.

Candidate-source observation begins

Capture-only observation of candidate sources (rate cards, committed-term surfaces, marketplace feeds) began under panel provenance rules. No candidate holds a panel vote; proposals follow the Change Management Policy.

v2.1.0 effective — realized decomposition

The addition announced 2026-07-10 took effect. Realized with/without on the effective fixing: $3.60 with (n = 12) vs $3.52 without (n = 11), +2.3% composition. Day-over-day +1.0% = +2.3% composition − 1.3% market; use $3.52 for the market leg across the boundary. No comments were received by the close.

v2.1.0 — one source added to the on-demand rate panel

One source posting guaranteed on-demand and interruptible H100 and B200 rates joins the neocloud panel. Its own capacity only: re-sold capacity of existing members is excluded, one operator one vote. A corporate affiliate remains a separate panel source while both rate cards stay live; no splice. Comments were open through 2026-07-14.

July 1–2 panel expansion — collection panel 31 → 41 sources

Eleven sources entered over 2026-07-01/02 and several cells stepped where new price levels entered. The steps are composition effects, not repricing; treat week-over-week comparisons across the boundary accordingly.

Fourth source enters the hyperscaler H100 US cell

A fourth source's on-demand H100 US rows began flowing 2026-07-02/03. The step is a composition effect — no panel source changed a posted rate on those dates.

v2.0.0 — first public methodology

Chip × operator-class × geography series grammar, operator-equal weighting, published headline-statistic rule, frozen panel roster. Every published row carries its methodology version.