[AINews] SpaceXAI launches Grok 4.5, first Opus-class model post Cursor acquisition SpaceXAI continues to move faster than any other frontier lab on earth. As GPT 5.6 is confirmed to launch tomorrow, today is pretty much the last day anyone will be excited about a GPT 5.5 equivalent model launch, and that is exactly what SpaceXAI did: The new Grok 4.5 is a different weight class than the Composer series (1.5T) and despite the solid evals still performs very comparably to the current workhorse Opus and GPTs, although per OpenAI’s evals team even the mighty SWE-Bench Pro is now saturated/termina