Elon Musk
@elonmusk · Jul 8, 2026
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 and lower cost.
Elon Musk
@elonmusk
We will continue to make refinements to the Grok Build harness and the 1.5T foundation model almost every day in response to user requests.
The 2T model will finish training this month and be available to customers next month.
04:30 PM · July 8, 2026 · 42.2K views
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