Leaker claims Grok 4.8 will be a 2.5T-parameter monster, pretraining done this week
mark_k · x · 2026-09-14
Well-known leaker markk claims xAI's Grok 4.8 will be a 2.5-trillion-parameter model trained with a new C++ software stack. Pretraining reportedly finishes this week, with reinforcement learning to follow. Unverified — treat with caution.
Related event: Musk Says 2.5T-Parameter Grok 4.8 Finishes Pretraining This Week(3 posts)→
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