Elon Musk Says Grok 4.5 Enters Private Testing at SpaceX and Tesla

My take: This one got me amused and a little watchful at the same time 👀. xAI pushed Grok 4.5 into private beta exclusively for teams at Tesla and SpaceX, and Musk came out saying it already beats Claude Opus. The model has 1.5 trillion parameters (three times larger than its predecessor) and was trained with Cursor data, the AI-powered coding environment developers use. So Musk is using his own companies as a live lab, like the chef who tests the recipe in his own kitchen before opening the restaurant. And the 'it already beats Claude Opus' claim? That comes from Musk himself, not an independent benchmark 🙄. But the pace is real: they are promising a new model every month through year-end. Grok 4.5 is not publicly available yet, but the competitive pressure it adds to the market reaches everyone. Stay tuned.