The 2026 AI Index states that the benchmark scores in its technical-performance chapter come from leaderboards, public repositories and company disclosures, including papers, blog posts and product releases, and that it “assumes that company-reported results are accurate”, while its introduction says that “independent testing does not always confirm what developers report”.

SocioLens project,

Claim LD06-SL-C02 (v1.0)

Provenance and status

Claim type: Fact
Publication status: Eligible for publication, with a qualifier
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: A claim that any particular company-reported score is wrong, or how many of the index’s figures are company-reported
Limitations: Covers one chapter of one edition; the share of the chapter’s scores that are company-reported was not counted
Source (as cited): Sajadieh, Fattorini, Perrault, Gil, Parli et al., “The AI Index 2026 Annual Report,” AI Index Steering Committee, Institute for Human-Centered AI, Stanford University, April 2026
Source type: Independent research report (recorded as “Annual index report”)
Institutional position: University-based index (Stanford HAI)
Maturity of the evidence: Mature evidence
Recorded date: 15 October 2026
Currentness / correction: This is the current version. No correction or concern is recorded on its sources.

Sources this version cites

Sajadieh, Fattorini, Perrault, Gil, Parli et al., “The AI Index 2026 Annual Report,” AI Index Steering Committee, Institute for Human-Centered AI, Stanford University, April 2026 (Independent research report)
No checked link to the original yet.

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): FACT (as printed: “FACT”)
Publication status (coded): ELIGIBLE (QUALIFIED) (as printed: “ELIGIBLE WITH QUALIFIER”)
Verification state (coded): CONTENT_VERIFIED_PRIMARY
Source type (coded): INDEPENDENT_RESEARCH_REPORT
Maturity (coded): MATURE

#	Canonical field	Canonical value (verbatim)	Normalized (Claim Value Vocabulary v1.0.2)
1	CLAIM ID	LD06-SL-C02	—
2	PUBLIC-FACING CLAIM	The 2026 AI Index states that the benchmark scores in its technical-performance chapter come from leaderboards, public repositories and company disclosures, including papers, blog posts and product releases, and that it “assumes that company-reported results are accurate”, while its introduction says that “independent testing does not always confirm what developers report”.	—
3	CLAIM TYPE	FACT	base_types: FACT
4	RESEARCH STRAND	B — Leaderboards, judges and disclosure	—
5	MATURITY	MATURE	states: MATURE
6	SOURCE	Sajadieh, Fattorini, Perrault, Gil, Parli et al., “The AI Index 2026 Annual Report,” AI Index Steering Committee, Institute for Human-Centered AI, Stanford University, April 2026	source_ids: SRC-SL-AI-INDEX-2026-ANNUAL-REPORT
7	SOURCE TYPE	Annual index report	classes: INDEPENDENT_RESEARCH_REPORT
8	INSTITUTIONAL POSITION	University-based index (Stanford HAI)	—
9	SCOPE	The technical-performance chapter of the 2026 report	—
10	DESIGN	Statement of method in the report	—
11	SAMPLE / DATASET	Benchmark scores reported as of early 2026	—
12	MODEL / TOOL / VERSION	Not applicable	—
13	COMPARATOR	None	—
14	MAIN RESULT	“Scores are sourced from leaderboards, public repositories, and company disclosures, including papers, blog posts, and product releases. The AI Index assumes that company-reported results are accurate.”	—
15	INFERENTIAL TARGET	Whether a widely relayed index verifies developers’ own benchmark scores	—
16	DOES NOT LICENSE	A claim that any particular company-reported score is wrong, or how many of the index’s figures are company-reported	—
17	VERIFICATION STATE	CONTENT VERIFIED	state: CONTENT_VERIFIED_PRIMARY · verified_by: UNKNOWN
18	LIMITATIONS	Covers one chapter of one edition; the share of the chapter’s scores that are company-reported was not counted	—
19	CONTRADICTORY / SUPPORTING SOURCES	The same chapter notes cases where models did worse in independent testing than developers reported; on falling developer disclosure, LD06-SL-C17	—
20	GEOGRAPHY / LANGUAGE	Global / English	—
21	DISTRIBUTIONAL LEDGER	Not analysed in this claim	—
22	R01 / FIELD-MAP LINKS	LD-06, D4b	—
23	WHAT WOULD CHANGE THIS CLAIM?	A later edition that verifies or marks company-reported scores	—
24	PUBLICATION STATUS	ELIGIBLE WITH QUALIFIER	state: ELIGIBLE · qualifiers: QUALIFIED
25	RECORDED DATE	2026-10-15	—

Field 22 references resolved against Field Map v0.2: LD-06 (LIVING_DEBATE); D4b (SUB_AREA)

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

Pinned Sources (field 6, version-specific)

“Sajadieh, Fattorini, Perrault, Gil, Parli et al., “The AI Index 2026 Annual Report,” AI Index Steering Committee, Institute for Human-Centered AI, Stanford University, April 2026” → Sajadieh et al. (2026), “The AI Index 2026 Annual Report” (SRC-SL-AI-INDEX-2026-ANNUAL-REPORT--v1.0) — Sajadieh, Fattorini, Perrault, Gil, Parli et al., “The AI Index 2026 Annual Report,” AI Index Steering Committee, Institute for Human-Centered AI, Stanford University, April 2026; class INDEPENDENT_RESEARCH_REPORT (explicit public provenance pin)

Cited by Living Debate versions

The evaluation apparatus: Can benchmarks, leaderboards and audits carry the weight placed on them? (v0.1) LD-06

Cite this page

SocioLens project. (2026, October 15). The 2026 AI Index states that the benchmark scores in its technical-performance chapter come from leaderboards, public repositories and company disclosures, including papers, blog posts and product releases, and that it “assumes that company-reported results are accurate”, while its introduction says that “independent testing does not always confirm what developers report” [Claim LD06-SL-C02, version v1.0]. SocioLens. https://sociolens-web.pages.dev/claims/ld06-sl-c02/v1.0/

@misc{sociolens_ld06_sl_c02_v1_0,
  author = {{SocioLens project}},
  title = {The 2026 AI Index states that the benchmark scores in its technical-performance chapter come from leaderboards, public repositories and company disclosures, including papers, blog posts and product releases, and that it “assumes that company-reported results are accurate”, while its introduction says that “independent testing does not always confirm what developers report”.},
  year = {2026},
  date = {2026-10-15},
  howpublished = {\url{https://sociolens-web.pages.dev/claims/ld06-sl-c02/v1.0/}},
  note = {Claim LD06-SL-C02, 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 71df6b9d2e0d21c7fee35bdee5658618c93d543cca072dbd8847035e832b0bfd.

Repository-authored inputs (not Drive exports)

SocioLens claim — LD06-SL-C02 v1.0 (v1.0) — written in the SocioLens repository by Project Lead (Claude, AI) on 2026-10-15; no Drive identity exists. Authority: AGENTS.md "Authority" (the Project Lead decides research content within the research-integrity rules) and the Owner's choice in the SocioLens project chat on 15 October 2026 to build the LD-06 debate; a new Claim, first version, written from the project's LD-06 source notes, checked against full texts or official abstracts. Block “ENTRY 02 — LD06-SL-C02” SHA-256 95f35a5f492872212587a230dd97f5366f59551642b1624492acaea7ab2959da; fixture fixtures/authored/claims/LD06-SL-C02--v1.0.

Builder decisions (not Drive data)

VERSION = v1.0 — basis: Claim version taken from the repository-authored claim fixture version (SocioLens claim — LD06-SL-C02 v1.0); the first version of a new Claim of the LD-06 debate
CURRENT_POINTER = true — basis: repository-authored claim "SocioLens claim — LD06-SL-C02 v1.0" (Project Lead (Claude, AI), 2026-10-15); basis: AGENTS.md "Authority" (the Project Lead decides research content within the research-integrity rules) and the Owner's choice in the SocioLens project chat on 15 October 2026 to build the LD-06 debate; a new Claim, first version, written from the project's LD-06 source notes, checked against full texts or official abstracts
FIELD_6_SOURCE_REFERENCE = SRC-SL-AI-INDEX-2026-ANNUAL-REPORT--v1.0 — basis: field 6 of ENTRY 02 — LD06-SL-C02 cites "Sajadieh, Fattorini, Perrault, Gil, Parli et al., “The AI Index 2026 Annual Report,” AI Index Steering Committee, Institute for Human-Centered AI, Stanford University, April 2026"; the only field-6 segment of this ClaimVersion's repository-authored ledger block.
SOURCE_PROVENANCE_PIN = SRC-SL-AI-INDEX-2026-ANNUAL-REPORT--v1.0 — basis: explicit version-pinned public provenance of this ClaimVersion (Amendment v1.2 §6): the pinned field-6 Source record "Sajadieh, Fattorini, Perrault, Gil, Parli et al., “The AI Index 2026 Annual Report,” AI Index Steering Committee, Institute for Human-Centered AI, Stanford University, April 2026".