On July 9, 2026, Grok 4.5 was released, built on a completely new foundation. Elon Musk called it an "Opus-Class" model and confirmed it is now running on OpenClaw, expanding platform access. Musk also confirmed Grok 4.5 landed at #1 on multiple benchmarks, including the top spot on the SWE marathon, and outperformed Fable 5 in some metrics, with his post surpassing 465K views. The model is available to developers via the AI SDK, and Musk confirmed a 1M+ token context window is coming soon. Grok 4.5 expanded beyond the xAI ecosystem with integrations into Notion and Convex, announced by the official @grok account. EU users will have to wait until Mid-July.