Overview / Measures
Measures · one platform · one subscription

Five indices, one method, one subscription

Pricing observations across AI compute economics — credit, assets, cost, supply — and data-as-an-asset valuation, inside one method framework: one standard for public data, one field schema, one interface shape, one paid entry point. No split products, no split subscriptions.

Indices
5
two asset classes
Live
2
NCSX-IS
In intake
3
no reading before issue 1
Subscriptions
1
covers all indices

1. The family

TickerIndexReadingStatusCadence
NCSX-ISNeocloud Credit Spread Index
Issuance-spread benchmark for USD bonds of Neocloud (AI infrastructure) issuers: 13 bullet fixed-rate corporate bonds across 6 issuers, $28.06B face value, face-weighted.
432.3
bp (issuance spread)
LIVEevent-driven
GRVIGPU Residual Value Index
What fraction of launch price a GPU still commands after N years of service — public, recomputable, weekly.
—
% of launch price
INTAKE · ISSUE 1 INweekly
DCPIData Center Power Price Index
What an AI data center actually pays per MWh under a supply contract — by state, by scale, by term, public and recomputable.
64.0
$/MWh (effective price)
LIVEmonthly
CIDXChina Intelligence-Compute Index
What China actually pays for intelligence-compute build-out, contract by contract, from public procurement awards — by region, card type and scale.
—
CNY/card · CNY/kW (base 2024Q1 = 100)
INTAKEweekly (records)
monthly (index)
DAVIData Asset Valuation Index
What a data asset is listed at, transacted at, carried at on the balance sheet, and pledged at — four curves, public and recomputable.
—
CNY per record / per year / per call (four curves) · pledge ratio %
INTAKEmonthly

A dash means issue 1 is not yet published: no estimates are substituted before observations are ingested.

2. Seven standards shared by the family

01 · Public and recomputable
Only legally public or publicly verifiable data. Every observation carries source_url and observed_at so anyone can follow the link back to the primary source and recompute the same number.
02 · Versioned methodology
Any change to a definition bumps the version and ships a changelog. Quietly redefining a series so history looks smoother is prohibited.
03 · Measure, do not judge
No credit ratings, no investment advice, no price forecasts. Gaps and spreads are reported as numbers only — no company is named, no verdict is issued.
04 · Free for academia and press
Methodology pages, aggregate series and record lists are permanently free for researchers and journalists. Only row-level data, API quota and change alerts are paid.
05 · One subscription, not per index
All five indices sit behind a single Pro subscription. No per-index plans, no per-index paywalls. You are buying the method, not one series.
06 · One interface shape
Every index exposes a structurally identical latest.json: same field names, same status enum. A machine reader writes the parser once and covers all five.
07 · One KPI
Third-party citations (papers, research notes, press, regulatory filings). Traffic, downloads and followers are not targets.

3. One subscription, not per index

The four new indices get no separate subscription, no separate paywall and no separate site. They are four series on one platform, sharing one account and one paid entry point.

TierWhat you get
FreeIndex readings, methodology pages, aggregate series, source links for every record, llms.txt and the latest.json status endpoint. Permanently free for research and press.
ProRow-level records with source_url / observed_at, full history, API quota, methodology change alerts, quarterly report data packs. One price covers all five indices; no per-index tiers.

See pricing and licensing Data licence

4. Machine endpoints

All five indices share one JSON shape with identical field names and status enum.

GET https://spreadbench.com/api/v1/measures/index.json family metadata GET https://spreadbench.com/api/v1//latest.json per-index status and series Available tickers: ncsx · grvi · dcpi · cidx · davi

5. Red lines

  • Legally public or publicly verifiable data only. No secondary trades, no CDS.
  • No credit ratings, no investment advice, no price forecasts.
  • No bespoke favourable version for any institution; every methodology change is versioned with a changelog.
  • Never publish any price obtained through a non-public channel.
  • No fake DOIs; datasets only through official Zenodo versions.

6. How to cite

Tian, B. (2026). Measures — NCSX-IS / GRVI / DCPI / CIDX / DAVI. SpreadBench. https://spreadbench.com/measures.html

More citation formats

All measuresNCSX-ISGRVIDCPICIDXDAVI