xAI AI Updates: August 7, 2026

1. xAI Releases Grok 4.6, a 1.5-Trillion-Parameter Frontier Model

xAI. xAI released Grok 4.6, a 1.5-trillion-parameter frontier model built on the same V9 foundation as Grok 4.5, with gains coming from improved supervised fine-tuning and reinforcement learning rather than added scale. Elon Musk had signaled the launch in late July, framing it as a post-training upgrade that improves quality and token efficiency ahead of a larger 2.1-trillion-parameter Grok 4.7 expected within weeks. The release continues xAI’s rapid model cadence following Grok 4.5 in early July. Source