xAI will not release Grok 5 by October 31, 2026. The company already missed its Q1 2026 and Q2 2026 targets, and Grok 4.5 in July 2026 and Grok 4.6 in mid-August 2026 remained part of the Grok 4 generation instead of a new flagship. Grok 5 will still be reported as training on the Colossus 2 gigawa…