Claim LD07-HQ-C12 (v1.0)

Model identity is time-indexed: proprietary services can change materially across deployed snapshots, so exact version and date are part of the measurement protocol.

Provenance and status

Claim type: FACT (as printed: “FACT”)
Publication status: ELIGIBLE (HISTORICAL_SNAPSHOT) (as printed: “ELIGIBLE WITH HISTORICAL-SNAPSHOT QUALIFIER”)
Verification state: CONTENT_VERIFIED_PRIMARY (as printed: “CLEARED”; verified by: UNKNOWN)
Does not license: Extrapolation of same drift magnitude to all current pinned models; claim open weights solve everything
Source (field 6, as printed): Chen, Zaharia & Zou, “How is ChatGPT’s behavior changing over time?”, Harvard Data Science Review 6(2), 2024
Source type (field 7): PEER_REVIEWED_JOURNAL_ARTICLE (as printed: “Peer-reviewed journal article”)
Institutional position: Academic
Maturity (claim evidence / publication maturity): EMERGING (FOUNDATIONAL) (as printed: “EMERGING / FOUNDATIONAL”)
Recorded date: 2026-09-25
Currentness / correction: This is the current version. No correction or concern relation is recorded on its Sources.

Version

Pinned version v1.0 (entry LD07-HQ-C12--v1.0) — this page never floats to newer evidence.

This pinned version is also the current version.

Versions:v1.0 · current

Pinned Sources (field 6, version-specific)

“Chen, Zaharia & Zou, “How is ChatGPT’s behavior changing over time?”, Harvard Data Science Review 6(2), 2024” → SRC-LD07-CHEN-ZAHARIA-ZOU-DRIFT-2024--v1.0 — Chen, Zaharia & Zou, “How is ChatGPT’s behavior changing over time?,” Harvard Data Science Review 6(2) (2024); class PEER_REVIEWED_JOURNAL_ARTICLE (explicit public provenance pin)

Read the originals

SRC-LD07-CHEN-ZAHARIA-ZOU-DRIFT-2024: open the original

All 25 canonical Claim fields (raw values and normalized values)

#	Canonical field	Canonical value (verbatim)	Normalized (Claim Value Vocabulary v1.0.2)
1	CLAIM ID	LD07-HQ-C12	—
2	PUBLIC-FACING CLAIM	Model identity is time-indexed: proprietary services can change materially across deployed snapshots, so exact version and date are part of the measurement protocol.	—
3	CLAIM TYPE	FACT	base_types: FACT
4	RESEARCH STRAND	F	—
5	MATURITY	EMERGING / FOUNDATIONAL	states: EMERGING · qualifiers: FOUNDATIONAL
6	SOURCE	Chen, Zaharia & Zou, “How is ChatGPT’s behavior changing over time?”, Harvard Data Science Review 6(2), 2024	source_ids: SRC-LD07-CHEN-ZAHARIA-ZOU-DRIFT-2024
7	SOURCE TYPE	Peer-reviewed journal article	classes: PEER_REVIEWED_JOURNAL_ARTICLE
8	INSTITUTIONAL POSITION	Academic	—
9	SCOPE	March vs June 2023 GPT-3.5/GPT-4 snapshots	—
10	DESIGN	Longitudinal service audit across seven task families	—
11	SAMPLE / DATASET	Math, safety, opinion surveys, knowledge, code, USMLE, visual reasoning	—
12	MODEL / TOOL / VERSION	GPT-3.5 and GPT-4 March/June 2023	—
13	COMPARATOR	Same named services at different dates	—
14	MAIN RESULT	Material behavior/performance shifts; final HDSR example GPT-4 prime/composite accuracy 84%→51%; willingness on opinion/sensitive questions changed	—
15	INFERENTIAL TARGET	Reproducibility/non-stationarity	—
16	DOES NOT LICENSE	Extrapolation of same drift magnitude to all current pinned models; claim open weights solve everything	—
17	VERIFICATION STATE	CLEARED	state: CONTENT_VERIFIED_PRIMARY · verified_by: UNKNOWN
18	LIMITATIONS	2023 snapshots; provider-specific historical example	—
19	CONTRADICTORY / SUPPORTING SOURCES	Later reproducibility literature to update magnitude	—
20	GEOGRAPHY / LANGUAGE	English task set	—
21	DISTRIBUTIONAL LEDGER	Not assessed	—
22	R01 / FIELD-MAP LINKS	T1, T7, R-1, D9	—
23	WHAT WOULD CHANGE THIS CLAIM?	Long-term proof that exact proprietary snapshots remain behaviorally stable and archivally accessible	—
24	PUBLICATION STATUS	ELIGIBLE WITH HISTORICAL-SNAPSHOT QUALIFIER	state: ELIGIBLE · qualifiers: HISTORICAL_SNAPSHOT
25	RECORDED DATE	2026-09-25	—

Field 22 references resolved against Field Map v0.2: T1 (TENSION); T7 (TENSION); R-1 (LENS); D9 (DOMAIN)

Cited by Living Debate versions

LD-07 v0.1

Research-of-record provenance

Materialized by sociolens-materializer 0.6.0 at 2026-09-28T20:00:00.000Z; normalization contract SocioLens — Claim Value Vocabulary v1.0.2 — Pre-Spike Materialization Contract (v1.0.2). Content seal SHA-256 e9668a837581a16b55aa08d887345c7997aabbe48ece57d6e036cace0cd07d74.

Frozen Drive-derived inputs

R03 — LD-07 Canonical Claim Ledger v1.0 — LOCKED (v1.0) — Drive ID 1xVz_LrQAA8EA1tPhVWIrDgOUU3Zidlg9; revision: NOT_EXPOSED_BY_DRIVE_TEXT_EXPORT; Drive modified 2026-09-29T04:31:14.120Z; block “ENTRY 12 — LD07-HQ-C12” SHA-256 1fc84c068224a516cbd25ebe1523cf72a4a0e56c55866755181ee58e50e3fc1d; SocioLens — Programme Status & Authority Register v0.6 status “CURRENT.”; frozen fixture fixtures/frozen/r03-ld07-claim-ledger-v1.0-canonical.

Builder decisions (not Drive data)

VERSION = v1.0 — basis: Claim version taken from the canonical ledger artifact version (R03 — LD-07 Canonical Claim Ledger v1.0); Implementation Architecture Selection §5
CURRENT_POINTER = true — basis: SocioLens — Programme Status & Authority Register v0.6 status for "R03 — LD-07 Canonical Claim Ledger v1.0 — LOCKED": "CURRENT."
FIELD_6_SOURCE_REFERENCE = SRC-LD07-CHEN-ZAHARIA-ZOU-DRIFT-2024--v1.0 — basis: field 6 of ENTRY 12 — LD07-HQ-C12 cites "Chen, Zaharia & Zou, “How is ChatGPT’s behavior changing over time?”, Harvard Data Science Review 6(2), 2024"; the frozen field-6 segment of this ClaimVersion's ledger block; Drive-derived identity authority (Issue #39 Source inventory): Batch 04 §2; ledger C12 fields 6/7/8; KEY EVIDENCE.
SOURCE_PROVENANCE_PIN = SRC-LD07-CHEN-ZAHARIA-ZOU-DRIFT-2024--v1.0 — basis: Issue #5 proof rendering (Architecture Proof Protocol v0.1 AP-08 / Amendment v1.2 §6): explicit version-pinned public provenance of this ClaimVersion — the pinned field-6 Source record "Chen, Zaharia & Zou, “How is ChatGPT’s behavior changing over time?”, Harvard Data Science Review 6(2), 2024"; Drive-derived identity authority (Issue #39 Source inventory): Batch 04 §2; ledger C12 fields 6/7/8; KEY EVIDENCE.