Model Performance and Development - The new model represents an enormous improvement over the previous version, Composer 2.5 [1] - The model was developed entirely from scratch [1] Strategic Collaboration and Outlook - SpaceXAI team collaborated on the development of the new model [1] - The development trajectory indicates a positive slope for future model iterations and ongoing efforts [1]

RT Michael Truell (@mntruell)Excited to release Grok 4.5 with @SpaceXAI.It's an Opus-class model that's fast and low cost. It's a significant step up over any model we've developed so far, including Composer 2.5, and has become the daily driver for many on our team.First of many releases. More soon. ...