Grok 4 Heavy
10 July 2025
Grok 4 Heavy from xAI, language model published 2025-07-10. Notable for: sota improvement.
Abstract
We have made further progress on parallel test-time compute, which allows Grok to consider multiple hypotheses at once. We call this model Grok 4 Heavy, and it sets a new standard for performance and reliability. Grok 4 Heavy saturates most academic benchmarks and is the first model to score 50% on Humanity's Last Exam, a benchmark "designed to be the final closed-ended academic benchmark of its kind."
Sources: Epoch AI. This entry was generated from a dataset and has not been edited by hand.