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, with a focus on long-running agents, coding and knowledge work. VentureBeat reports a pricing strategy designed to make those workloads cheaper to run. The model scores 61 on the third-party Artificial Analysis Intelligence Index, overtaking Kimi K3 and matching GPT-5.6 Sol for the world's third best on Artificial Analysis.

The technical detail

To install or upgrade, switch long-running agent, coding, and knowledge work traffic to Grok 4.6 from SpaceXAI, formerly xAI. Replace the prior model choice with Grok 4.6 so those workloads run on the new release. Use the new pricing for those workloads so they are cheaper to run, as VentureBeat describes.

Market and competitive context

After the switch, verify the live model is Grok 4.6 from SpaceXAI and that it is the release scoring 61 on the Artificial Analysis Intelligence Index. Confirm it overtakes Kimi K3 and matches GPT-5.6 Sol for the world's third best on Artificial Analysis. Do not add version numbers, dates, or figures beyond that score of 61, and do not treat matching GPT-5.6 Sol as meaning the models are the same.