THE P(DOOM) INDEX
pdoomcount.org
Computed 2026-09-16 · Snapshot v1.0 · Methodology v0.1 / R0.1 · Next refresh 2026-12-16 · Static v1
Computed snapshot v1.0 as of 2026-09-16. Not illustrative. BLOB-R0.1 0fae6bbcc552…
Gauge G1 · AI-caused catastrophe · horizon 2100
10.0%
Probability that artificial intelligence causes an event killing at least 10% of humanity or irreversibly collapsing industrial civilization, by 2100. Untrimmed weighted median of 5 published forecasts mapped to this definition.
6.5 15.4 3.57 10.0 11.0 0% 25%
Source IQR 3.57 to 11.0% (same-gauge, unweighted Tukey hinges) Point = untrimmed weighted median · envelope 6.5 to 15.4% (×0.65 to ×1.54)
Unconditioned aggregate 10.0% | weighted mean 8.12% (not the headline) | conditions ×1.00, neutral | founding snapshot, no predecessor
Conditions multiply the aggregate by ×1.00 (allowed span ×0.65 to ×1.54, ratio 2.37). Reference disagreement (XPT catastrophe, superforecasters vs domain experts) is 5.63×. Neutral multiplier, so conditions move this less than that disagreement. Down-move eligibility: D-GOV-TREATY UNMET; D-INC-CLEAR UNMET; D-INT-REPL UNMET; D-DEP-PAUSE UNMET. INC-CLOCK 0 days (starts 2026-09-16).

What this number is

An index of published judgments, not a measurement. The site mixes named forecasts from the Tier A ledger, then applies a documented news rubric. Live markets sit in a later slot, out of this snapshot. How the number is made →

What would move it down

Mechanical triggers, all UNMET at genesis: binding compute/training-run caps covering a majority of frontier compute (D-GOV-TREATY); 365 days without a scored S2+ incident (D-INC-CLEAR); an independently replicated safety/interpretability result (D-INT-REPL); a documented pause or restored human-in-loop on a named critical class (D-DEP-PAUSE).

The Gauges

All AI-caused · horizon 2100 · founding snapshot
GaugeValueBandTrendSince last
G1 · Catastrophe ≥10% of humanity or civilizational collapse 10.0% 3.57 to 11.0IQR, n=5 GENESIS Headline
G2 · Extinction Literal human extinction / FRI <5,000 1.69%unweighted midpoint 0.38% and 3.0%both published points; no IQR GENESIS Thin panel
G3 · Deployment cascade Premature deployment into critical systems compounding faster than oversight catches it n = 0 n/anot an aggregate n/a Constructed

G3 · SITE-CONSTRUCTED, NOT AN AGGREGATE

Premature deployment of insufficiently-verified AI into critical systems (grid, military command, health, finance, logistics), producing compounding failures that neither market nor regulator catches in time. Collapse-shaped, not extinction-shaped by necessity.

No row in the Tier A ledger is a published forecast of this event. Factors below are qualitative indicators, not a probability. C2 and C7 instrument the same thesis as conditions. At genesis those event lists are empty.

  • Deployment into named system classes indicator, not P(G3)
  • Verification lag indicator, not P(G3)
  • Liability lag indicator, not P(G3)
  • Compounding failures indicator, not P(G3)
  • Terminality (collapse-shaped outcome) indicator, not P(G3)

Near-term panel

As-stated · excluded from 2100 mixtures · H-near
DateSourceAs statedHorizon
2024-12-27Geoffrey HintonA-HINT-2024 · G2 · interval10% to 20%~30 years
2026-09-09Evan HubingerA-HUB-2026 · G2 · bound>10%10 years from Sep 2026

What Moved It

Event ledger · genesis only · no qualifying news events
DateEventRubric categoryEffect on G1
09 · 16 GENESIS-001. Founding static snapshot under methodology v0.1. Empty qualifying event list. M = 1.00 by default, not by scored news. R-NULL · SJ-GENESIS 0.0 pt

Current Conditions

Per-category {0.94, 0.97, 1.00, 1.03, 1.06} · overall ×0.65 to ×1.54 · all at 1.00
CategoryPosition in rangeMultiplier
Capability leaps
1.00
Sensitive-systems deployment
1.00
Governance & liability
1.00
Safety & interpretability research
1.00
Racing dynamics
1.00
Incident record
1.00
Autonomy dependency
1.00

The Record

11 ledger rows · 5 score G1-2100 · 2 score G2-2100 · G3 n=0

The site computes the aggregate from named, dated, cited forecasts. Vibes do not score. Only a primary numeric utterance scores. Surveys (current wave) and the XPT family share class weight 3.0; structured analyses 2.0; named statements 1.0, and in this snapshot none of them meet the 2100 horizon rule. Outliers stay on the ledger even when they do not score. Conflicts of interest are labeled in both directions. Leave-one-out: A-XPT-SF → 10.0%, A-CARL-2022 → 10.0%, A-AII-2024 → 7.5%, A-ORD-2020 → 10.0%, A-XPT-DE → 10.0%.

Tier A on the record: Ord, The Precipice (2020) · Carlsmith (2022) · AI Impacts 2024 (mixture) / 2023 (substitute-wave only) · XPT superforecasters and domain experts (FRI) · named near-term: Hinton 10% to 20%, Hubinger >10% · Bengio (no horizon) · LeCun (paraphrase, excluded) · Yudkowsky (UNVERIFIED, excluded). Tier B Metaculus/markets: out of the v1 mixture (unverified). Full receipts → source ledger · snapshot note