Elon Musk’s November 10 update that Grok 4.8 pre-training is complete and reinforcement learning is underway, with a soft rollout to Grok Bot users beginning that week, is the main catalyst shaping trader views on the next 4.8+ release. The 2.5-trillion-parameter model uses xAI’s new C++ training stack and follows the rapid cadence that delivered Grok 4.7 on September 21 after 4.6 in mid-August. This positions 4.8 as an incremental but foundational step before 4.9 and the larger Grok 5, which Musk has described as the potential AGI milestone. Traders are watching whether the limited rollout expands quickly to the full API and apps, or whether the pattern of prior timeline slips reappears amid ongoing competition from OpenAI, Anthropic, and Google models.