Editions
The Index · editions & dataThe Index frozen once a month, so a figure you cite is still there to check.
The live Index refreshes every night. Each month the public tables are also frozen into a dated edition: the same rows, both scores and the components and weights behind them, exactly as published that day. An edition is never recomputed. Cite an edition; read the live tables for today.
Every table, live or in an edition, can be downloaded as CSV.
- October 2026 edition13 tables · frozen 2026-10-01All tables, CSV ↓
- September 2026 edition12 tables · frozen 2026-09-27 · revised 2026-09-28All tables, CSV ↓
Licensed CC BY 4.0: reuse freely, credit “Cognitive Coefficient Institute”. Scores are model outputs, not predictions. Terms.