How to Install / Upgrade: SpaceXAI debuts Grok 4.6, overtaking Kimi K3's performance and matching GPT-5.6 Sol…

What happened

SpaceXAI, formerly known as xAI, has released Grok 4.6, its latest frontier AI model. The model is aimed at long-running agents, coding, and knowledge work, and the release includes a pricing strategy designed to make those workloads cheaper to run. On the third-party Artificial Analysis Intelligence Index, Grok 4.6 scores 61, overtaking Kimi K3 and matching GPT-5.6 Sol for the world's third best result on that index.

The technical detail

To install or upgrade, move your long-running agent, coding, and knowledge-work traffic onto Grok 4.6 from SpaceXAI. Replace calls to an older Grok model, or to a stand-in such as Kimi K3, with Grok 4.6 so those jobs run on the new model and on the new pricing. Confirm the provider is SpaceXAI, formerly known as xAI, before you cut over.

Market and competitive context

Do not leave production traffic on the former xAI name or on an older Grok model after the switch. After the upgrade, verify you are on Grok 4.6 and that your results line up with the published Artificial Analysis Intelligence Index score of 61, which surpasses Kimi K3 and matches GPT-5.6 Sol. Recheck billing after the cutover, because the pricing is designed to make long-running agent, coding, and knowledge-work loads cheaper to run.