Alexandr Wang on Twitter [0] mentioned open source plans:
"this is step one. bigger models are already in development with infrastructure scaling to match. private api preview open to select partners today, with plans to open-source future versions. incredibly proud of the MSL team. excited for what’s to come!"
So the answer is: no. lol. Remember Llama 4 Behemoth, and how we were supposed to get more great models from it?