xAI launches Grok 4.6 with benchmark gains and lower-cost positioning for agent workloads

xAI has released Grok 4.6, a new frontier model positioned for long-running agents, coding, and knowledge-work tasks. VentureBeat reports the model reached 61 on Artificial Analysis's Intelligence Index, surpassing Moonshot AI's Kimi K3 and tying OpenAI's GPT-5.6 Sol Max, while keeping API pricing at $2 per million input tokens and $6 per million output tokens.