HLE is "a multi-modal benchmark at the frontier of human knowledge, designed to be the final closed-ended academic benchmark of its kind with broad subject coverage" with 2,500 questions spanning over 100 subjects (CAIS - HLE). The question will be suspended on 17 December 2026 and the outcome determined using the ranks as reported by CAIS at approximately 5:00PM ET on 18 December 2026 (CAIS AI Dashboard, see "Text Capabilities Index" and click the header for the "Humanity's Last Exam" column). As of 2 February 2026, Google was ranked first with its "Gemini 3 Pro" model with a score of 38.3%. In the event of a tie for first place by models of different organizations, the model to have made the high score first will be considered the winner (CAIS - HLE, see "AI Progress on Humanity's Last Exam" chart). If a listed organization ceases to exist due to a merger or acquisition, the successor in interest organization will count as that named organization.

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