In a preregistered experiment with 758 BCG consultants, GPT-4 users completed 12.2% more inside-frontier tasks, worked 25.1% faster and produced roughly 30–34% higher human-graded quality, but were 19 percentage points less likely to be correct on a task outside the tested frontier.

SocioLens project,

Claim LD02-HQ-C14 (v1.0)

Provenance and status

Claim type: Estimate
Publication status: Eligible for publication
Verification state: Checked against the primary source. Who checked this claim is not recorded for it; claim checks so far were AI-led, and no person has checked claims against their sources.
Does not license: General consulting labour-demand effect; a single global “GPT-4 productivity effect”
Limitations: One firm; specific task set; model vintage
Source (as cited): Dell’Acqua et al., “Navigating the Jagged Technological Frontier,” Organization Science 37(2), 2026
Source type: Peer-reviewed journal article (recorded as “Peer-reviewed journal article”)
Institutional position: Mixed / BCG-affiliated research setting
Maturity of the evidence: Mature evidence
Recorded date: 25 September 2026
Currentness / correction: This is the current version. No correction or concern is recorded on its sources.

Sources this version cites

Dell’Acqua et al., “Navigating the Jagged Technological Frontier,” Organization Science 37(2), 2026 (Peer-reviewed journal article)
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Version

This page shows version v1.0. Its record never changes, even when newer evidence arrives; the site may add a note to the page or withhold a figure not cleared for public use.

This pinned version is also the current version.

Versions: v1.0 · current

Raw record: every recorded field, with its coded values

All 25 canonical Claim fields, verbatim, with the coded values derived from them. The plain-language labels above are read from these.

Claim type (coded): ESTIMATE (as printed: “ESTIMATE”)
Publication status (coded): ELIGIBLE (as printed: “ELIGIBLE”)
Verification state (coded): CONTENT_VERIFIED_PRIMARY
Source type (coded): PEER_REVIEWED_JOURNAL_ARTICLE
Maturity (coded): MATURE

#	Canonical field	Canonical value (verbatim)	Normalized (Claim Value Vocabulary v1.0.2)
1	CLAIM ID	LD02-HQ-C14	—
2	PUBLIC-FACING CLAIM	In a preregistered experiment with 758 BCG consultants, GPT-4 users completed 12.2% more inside-frontier tasks, worked 25.1% faster and produced roughly 30–34% higher human-graded quality, but were 19 percentage points less likely to be correct on a task outside the tested frontier.	—
3	CLAIM TYPE	ESTIMATE	base_types: ESTIMATE
4	RESEARCH STRAND	B — Task-level productivity and quality	—
5	MATURITY	MATURE	states: MATURE
6	SOURCE	Dell’Acqua et al., “Navigating the Jagged Technological Frontier,” Organization Science 37(2), 2026	source_ids: SRC-LD02-DELLACQUA-ORGANIZATION-SCIENCE-2026
7	SOURCE TYPE	Peer-reviewed journal article	classes: PEER_REVIEWED_JOURNAL_ARTICLE
8	INSTITUTIONAL POSITION	Mixed / BCG-affiliated research setting	—
9	SCOPE	758 BCG knowledge workers; selected consulting tasks	—
10	DESIGN	Preregistered randomised experiment	—
11	SAMPLE / DATASET	18 inside-frontier tasks plus outside-frontier managerial task	—
12	MODEL / TOOL / VERSION	GPT-4	—
13	COMPARATOR	Randomised no-AI group	—
14	MAIN RESULT	+12.2% tasks; +25.1% speed; +29.9% to +33.9% human-graded quality depending treatment arm; −19pp correctness outside frontier	—
15	INFERENTIAL TARGET	Task-specific productivity and failure across capability boundary	—
16	DOES NOT LICENSE	General consulting labour-demand effect; a single global “GPT-4 productivity effect”	—
17	VERIFICATION STATE	CONTENT VERIFIED	state: CONTENT_VERIFIED_PRIMARY · verified_by: UNKNOWN
18	LIMITATIONS	One firm; specific task set; model vintage	—
19	CONTRADICTORY / SUPPORTING SOURCES	Shows why positive task studies and failure results can coexist	—
20	GEOGRAPHY / LANGUAGE	Global firm / English	—
21	DISTRIBUTIONAL LEDGER	Below-average performers benefit more in reported analyses	—
22	R01 / FIELD-MAP LINKS	D2, D3, R-2	—
23	WHAT WOULD CHANGE THIS CLAIM?	Newer-model replication erases task-boundary failures	—
24	PUBLICATION STATUS	ELIGIBLE	state: ELIGIBLE
25	RECORDED DATE	2026-09-25	—

Field 22 references resolved against Field Map v0.2: D2 (DOMAIN); D3 (DOMAIN); R-2 (LENS)

The sources as recorded, with their record IDs and coded source types:

Pinned Sources (field 6, version-specific)

“Dell’Acqua et al., “Navigating the Jagged Technological Frontier,” Organization Science 37(2), 2026” → Dell’Acqua et al. (2026), “Navigating the Jagged…” (SRC-LD02-DELLACQUA-ORGANIZATION-SCIENCE-2026--v1.0) — Dell’Acqua et al., “Navigating the Jagged Technological Frontier,” Organization Science 37(2), 2026; class PEER_REVIEWED_JOURNAL_ARTICLE (explicit public provenance pin)

Cited by Living Debate versions

Cite this page

SocioLens project. (2026, September 25). In a preregistered experiment with 758 BCG consultants, GPT-4 users completed 12.2% more inside-frontier tasks, worked 25.1% faster and produced roughly 30–34% higher human-graded quality, but were 19 percentage points less likely to be correct on a task outside the tested frontier [Claim LD02-HQ-C14, version v1.0]. SocioLens. https://sociolens-web.pages.dev/claims/ld02-hq-c14/v1.0/

@misc{sociolens_ld02_hq_c14_v1_0,
  author = {{SocioLens project}},
  title = {In a preregistered experiment with 758 BCG consultants, GPT-4 users completed 12.2\% more inside-frontier tasks, worked 25.1\% faster and produced roughly 30–34\% higher human-graded quality, but were 19 percentage points less likely to be correct on a task outside the tested frontier.},
  year = {2026},
  date = {2026-09-25},
  howpublished = {\url{https://sociolens-web.pages.dev/claims/ld02-hq-c14/v1.0/}},
  note = {Claim LD02-HQ-C14, version v1.0}
}

The link points to this version, whose record never changes. For a finding, cite the original study as well: SocioLens summarizes research and does not replace it.

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 24caaffc8834bc376a1b363230f307b5237e97602ea0b6c253a1275ccf73d688.

Frozen Drive-derived inputs

R05 — LD-02 Canonical Claim Ledger v1.0 — LOCKED (v1.0) — Drive ID 1y7Iid5SaEnjKaPZ7ZsSSVj8dASVlSF8b; revision: NOT_EXPOSED_BY_DRIVE_TEXT_EXPORT; Drive modified ; block “ENTRY 14 — LD02-HQ-C14” SHA-256 316d60223130d80f073f8663ebafbf1c7b6343ca8a733221776d255838e13714; SocioLens — Programme Status & Authority Register v0.6 status “CURRENT.”; frozen fixture fixtures/frozen/r05-ld02-claim-ledger-v1.0-canonical.

Builder decisions (not Drive data)

VERSION = v1.0 — basis: Claim version taken from the locked R05 canonical ledger v1.0; HQ-ESC-sociolens-ld02-t6-20261011T133040Z-01 ruling 1 authorizes completion of its existing canonical claim corpus. This is the first materialized version of this logical Claim, not a research update.
CURRENT_POINTER = true — basis: SocioLens — Programme Status & Authority Register v0.6 status for "R05 — LD-02 Canonical Claim Ledger v1.0 — LOCKED": "CURRENT."
FIELD_6_SOURCE_REFERENCE = SRC-LD02-DELLACQUA-ORGANIZATION-SCIENCE-2026--v1.0 — basis: field 6 of ENTRY 14 — LD02-HQ-C14 cites "Dell’Acqua et al., “Navigating the Jagged Technological Frontier,” Organization Science 37(2), 2026"; HQ-ESC-sociolens-ld02-t6-20261011T133040Z-01 ruling 5: this exact frozen field-6 citation segment selects SRC-LD02-DELLACQUA-ORGANIZATION-SCIENCE-2026--v1.0 under ruling 4; identity established by B3 lines 103–139 and the pinned R05 ledger fields 6/7/8.
SOURCE_PROVENANCE_PIN = SRC-LD02-DELLACQUA-ORGANIZATION-SCIENCE-2026--v1.0 — basis: HQ-ESC-sociolens-ld02-t6-20261011T133040Z-01 ruling 5 / Publication System Amendment v1.2 §§4,6: explicit version-pinned public provenance selection of SRC-LD02-DELLACQUA-ORGANIZATION-SCIENCE-2026--v1.0 for LD02-HQ-C14--v1.0. Preserve the canonical qualification and independently authorized Source metadata.