SpaceXAI will make Grok 4.5 available to the public today. Elon says it is an Opus-class model, but faster, more token-efficient and lower cost. Based on strong positive feedback from customers in our beta test program, @SpaceXAI will make Grok 4.5 available to the public tomorrow. It is an Opus-class model, but faster, more token-efficient ...

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Link :
https://www.nextbigfuture.com/2026/07/spacexai-releasing-grok-4-5-today.html