Grok
Grok launched in November 2023 from xAI, now owned by SpaceX and renamed SpaceXAI in July 2026. Used on grok.com and X. Includes Grok Imagine (images and video at grok.com/imagine). Limited free use. The x.ai pricing page shows one subscription for Grok and X: Plus ($8), Premium ($30), Super ($100) and Ultra ($200) a month, excluding tax.