Haozhu Wang
@haozhu_wang · Jun 28, 2026
It’s a good model, sir
Elon Musk@elonmusk· Jun 28, 2026Grok 4.5, based on our 1.5T V9 foundation model, with Cursor data added in supplemental training, is now in private beta at SpaceX & Tesla. Early evals show performance close to, perhaps exceeding Opus.
RL is continuing to significantly improve the model, and the Grok Build
Elon Musk
@elonmusk
It is 🫡
10:19 PM · June 28, 2026 · 74K views
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