xAI confirmed a 2-trillion-parameter Grok 4.6 on July 18, 2026 and has a larger Grok 4.7 already weeks behind it, a release cadence no other frontier lab has publicly matched. With Grok 4.5 already priced over 60 percent below GPT-5.5 and Opus 4.8, xAI is applying simultaneous pricing and pace pressure on OpenAI and Anthropic while explicitly targeting Moonshot AI's Kimi K3.