Tesla CEO Elon Musk said Grok 4.8 is a 2.5T model trained on the firm's new C++ software stack; training will finish this week and reinforcement learning will begin.

2026-09-14

Tesla CEO Elon Musk said Grok 4.8 is a 2.5T model trained on the firm's new C++ software stack; training will finish this week and reinforcement learning will begin.