Pith Number

pith:KOKUW7ES

pith:2026:KOKUW7ES353BS3M434NS466NV3

not attested not anchored not stored refs pending

Think Fast: Estimating No-CoT Task-Completion Time Horizons of Frontier AI Models

Alex Serrano, Anders Cairns Woodruff, Ariana Azarbal, Dewi Gould, Elle Najt, Francis Rhys Ward, Harry Mayne, Ida Caspary, Ionut Gabriel Stan, Jason Ross Brown, Jo J. Jiao, Josh Hills, Julian Stastny, Patrick Leask, Ram Potham, Rauno Arike, Ryan Greenblatt, Shubhorup Biswas, Simeon Hellsten, Twm Stone, William L. Anderson

arxiv:2606.07157 v1 · 2026-06-05 · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KOKUW7ES353BS3M434NS466NV3}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-06-08T01:04:49.761616Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53954b7c92df76196d9cdf1b2e7bcdaee6a546e46b33eab514b63c6d14b233c1

Aliases

arxiv: 2606.07157 · arxiv_version: 2606.07157v1 · doi: 10.48550/arxiv.2606.07157 · pith_short_12: KOKUW7ES353B · pith_short_16: KOKUW7ES353BS3M4 · pith_short_8: KOKUW7ES

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/KOKUW7ES353BS3M434NS466NV3 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 53954b7c92df76196d9cdf1b2e7bcdaee6a546e46b33eab514b63c6d14b233c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c52fbe61907ba70cedb0a011e7cd79eb363c9b960f1d87c9492b3fc8daa5230",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-06-05T11:17:08Z",
    "title_canon_sha256": "5c699cf1c59e6e6cca8d78aea4c18804efc3dae341db8c6881ef1b40ca59d27b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.07157",
    "kind": "arxiv",
    "version": 1
  }
}