The independent investigators wrote that OpenAI defined the dates in scope, June 26 through July 13, 2026. The window opens a month after OpenAI's own team observed the message board.

The passage

OpenAI defined the dates in scope for this investigation as June 26th, 2026 through July 13th, 2026

The document

Document

METR and Redwood Research, investigation report on the OpenAI and Hugging Face incident

Dated

2026-08-26

Source

open the primary

Archived

primaries/glm-oai-cache-2026-08-31/hf-report.txt

Who read it

joedigs, from the archived report text 2026-09-03 (line 50 of the extraction).