Musk says Grok 4.8 pre-training complete, reinforcement learning under way

Summary

• Elon Musk said on Tuesday that pre-training for xAI’s Grok 4.8 artificial intelligence model had been completed, with the system now undergoing reinforcement learning ahead of a planned initial rollout to some users later this week.
• “Now, 4.8 is in RL and the evals are starting to climb,” Musk said, referring to reinforcement learning and the model’s evaluation results.
• Musk said xAI planned a “soft rollout” to Grok Bot users later this week to assess how the model performed.

AI Generated Summary

Elon Musk said on Tuesday that pre-training for xAI’s Grok 4.8 artificial intelligence model had been completed, with the system now undergoing reinforcement learning ahead of a planned initial rollout to some users later this week.