xAI is Elon Musk’s frontier lab, founded in 2023 and moving at the pace you would expect. It built the Grok line on the Colossus supercomputer cluster and ships it both as an API and as a consumer product inside X, which gives Grok a real-time reach the other labs do not have natively.
The house style is speed and directness. Grok answers fast, carries a less-filtered voice, and prices aggressively for its capability tier, which makes it a genuine value challenger against the larger US labs. The trade is a thinner public safety and governance record, which matters more in regulated procurement.
The catalogue below is every Grok model we track, joined live to pricing, context, and benchmark scores.