xAI ships Grok 4.5 at $2/$6 per million tokens, the same week as GPT-5.6

xAI shipped Grok 4.5 at $2 per million input tokens and $6 per million output — trained partly on Cursor's coding data, and pitched by Elon Musk as 'Opus-class' but faster and more token-efficient than rivals. Landing days after GPT-5.6 and priced under Anthropic's Opus tier, it turns the frontier into a three-way price fight, with Cursor and the xAI console as day-one distribution.

Source: x.ai ↗