Elon Musk says Grok 4.6 targets August 7 as a 1.5T model
Elon Musk said Grok 4.6 is planned around August 7 as a 1.5T-parameter model with significantly improved SFT and RL. He added that Grok 4.7 is expected shortly after as a 2.1T variant focused on absolute performance and token quality.
Key takeaway
xAI is signaling a compressed two-step scale-up where a near-term 1.5T Grok 4.6 emphasizes better post-training, then a denser 2.1T Grok 4.7 pushes raw capability before latency tuning.
Context
In an X post dated 2026-07-28, Musk framed Grok 4.6 as arriving around August 7 with a 1.5T parameter count and material gains in supervised fine-tuning and reinforcement learning, positioning the drop as more than a minor point release.
He said Grok 4.7 would follow soon at 2.1T and prioritize absolute performance and token behavior, implying xAI is prioritizing frontier capability density on a short cadence rather than waiting for a single fully optimized flagship.
Numbers to know
- 1.5TStated parameter scale for Grok 4.6
- 2.1TStated parameter scale for the follow-on Grok 4.7
- August 7Target window Musk gave for the Grok 4.6 release