xAI
xAI's Grok model line. Grok 4.6 is the latest public release. Grok 4.7 was expected next and has slipped, while Musk has also sketched 4.8 training, 4.9, and Grok 5 on X.
Grok 4.7 public release
NextNo date announced
RumoredSeptember 12, 2026 (slipped)
Previous: Grok 4.6 · August 12, 2026
Sources
On September 14, Musk still treated Grok 4.7 as the next public step. xAI has not published a model card, price, or official date.
As of 2026-09
Rumored date
Reporting put the unofficial Grok 4.7 target on September 12, 2026. It did not ship that day.
As of 2026-09
On September 11, 2026, Musk said Grok 4.7 needed a few more days of reinforcement-learning tuning. Earlier unofficial windows from late July and August had already closed.
As of 2026-09
Timeline
Grok 4
July 9, 2025
Grok 4.1
November 17, 2025
Grok 4.5
July 16, 2026
Grok 4.6
August 12, 2026
Grok 4.7 public release
No date announced
Rumored · September 12, 2026 (slipped)
Grok 4.8 finishes training, starts RL
No date announced
Rumored · Sep 14, 2026 – Sep 20, 2026
Grok 4.9
No date announced
Grok 5
No date announced