Grok 4.6 matches GPT-5.6 at $2/$6

SpaceXAI released Grok 4.6 on August 12 with a 61 Artificial Analysis Intelligence Index score, matching GPT-5.6 Sol, and priced its API at $2 per million input tokens and $6 per million output tokens. In the Grok 4.6 release announcement, xAI positions the model for long-running agents, coding, knowledge work, and visual projects, with twice the included usage in Cursor and Grok Build for its first week. Builders comparing Grok 4.5’s token-efficiency trade-off should treat the headline as a cheap frontier pilot, not a blanket switch: the same release shows Grok behind the leaders on several coding and terminal evaluations.