SpaceXAI releases Grok 4.6, claiming GPT-5.6 Sol and Claude Fable 5-level intelligence

SMRTR summary
SpaceXAI launched Grok 4.6, claiming it matches GPT-5.6 Sol and nearly ties Claude Fable 5 on the Artificial Analysis Intelligence Index with a score of 61. Built for coding and long-running tasks, it starts at $2 per million input tokens, undercutting rivals significantly.
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