Claim · 2025-08-20 · revision · Stated in source · Supported

xAI published the Grok 4 Model Card, the expression read stating that it was last updated on 20 August 2025.

One recorded claim. The claim panel gives its qualification, the source passages with their place in each source, and how it was checked.

What it connects

xAI → published → Grok 4 Model Card

Where it appears

No collection page holds this claim. It is listed with its records in the explorer.

Claim and evidence

xAIpublished ↓Grok 4 Model Card

Machine-checked, not reviewed by an editorStated in sourceSupported

Supporting evidence: primary · 1 source

Object version: The expression stating 'Last updated: August 20, 2025' · Publication date unknown · Effective date not established · Revised 2025-08-20
Date: 2025-08-20 · revision

Scope and limitsThe date recorded is the card's stated last update. Publication is not evidence that the evaluations described were carried out as described.

The evidence 01

primary sourceSupports the claim

Grok 4 Model Card

xAI · Publication date unknown

Cite the original source

Cite the original document, not Selekoa. Check these details against it.

Source excerpt

“Grok 4 Model Card xAI Last updated: August 20, 2025”

Location in source PDF p. 1, cover

How it was read Retrieved directly from the publisher

Machine-checked · 2026-10-30

Source details and check notes

Authors: xAI
Version: Retrieved for the candidate pack on 2026-10-28 (SHA-256 54068c0d9570d94dfc63c08247707b8c48045a79b5bbe865af709af95ee14415). PDF stating 'Last updated: August 20, 2025', served from data.x.ai on 2026-10-28; that stated last update is the expression checked, and the card does not say what any update changed or when it was first published. The x.ai web page for the card returned HTTP 404. Retrieved again at admission on 2026-10-30 (SHA-256 54068c0d9570d94dfc63c08247707b8c48045a79b5bbe865af709af95ee14415, the same bytes).
Canonical address: Open the canonical source ↗
Accessed: 2026-10-28
Language: English (en)
Attribution: xAI, “Grok 4 Model Card”.
Reuse: No open redistribution licence asserted. Bibliographic metadata, editorial paraphrases and short attributed quotations (at most 50 words each). Recheck terms before wider redistribution.
Check notes: Candidate pack passage, AI and biosecurity (research/ai-bio). The quotation (10 words) matched the text retrieved for the candidate pack on 2026-10-28 and again at admission on 2026-10-30, in a fresh retrieval whose SHA-256 equals the pack’s. Matching ignored differences of whitespace, case, quotation marks, dashes and Unicode compatibility forms, so the source’s typography can differ. Cover lines, run together in the PDF text layer. The x.ai web page for the card returned HTTP 404 on 2026-10-28. A cross-family machine check (2026-10-30, item 22) answered the record’s question blind from fresh retrievals and agreed in part; its corrections were applied at admission. No human editorial review.

Status and meaning

Editorial status. Not reviewed by an editor. An exploratory record that no editor has accepted. This status does not say whether a person has read any linked passage. Each evidence record above shows how it was checked.

Relation. Publication of a specific document or version. Publication of a policy is not evidence of implementation.

Date. The card states 'Last updated: August 20, 2025'; no first publication date is stated. The expression checked is the PDF served at data.x.ai/2025-08-20-grok-4-model-card.pdf on 2026-10-28, whose only date is that stated last update; the card does not say what any update changed, or when the card was first published.

Record ID ab-ev-grok4-card-published