Rumor: Grok 4.8 with 2.5T parameters (up 67% from Grok 4.6) may launch this week

mark_k · x · 2026-10-11

Blogger markk relays a rumor that Grok 4.8 could ship this week, claiming Elon Musk confirmed 2.5 trillion parameters vs 1.5T in Grok 4.6 — a 67% size jump — with a substantial capability leap expected.

Per past release patterns, it would likely appear first in Cursor and Grok Build before rolling out to the Grok app and website. Note: this is not an official xAI confirmation and the sourcing is vague, so treat as unverified.

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