September 21, 2026
Elon Musk’s xAI released Grok 4.7 on Monday afternoon, its best model to date, calling it “a notable improvement over Grok 4.6 at the same price and speed.”
The release comes after several apparent delays. Musk had walked the timeline back at least five times since late July: “four weeks out,” then “a few weeks,” then “3 to 4 weeks,” then “10 days” on September 1, then “needs a few more days to cook” on September 11.
There’s no waitlist this time—it’s live now in the Grok app, Cursor, Grok Build, and the xAI API.
Grok 4.7 ships a new safeguard stack with strong jailbreak resistance. On CursorBench 4.0, Cursor’s benchmark for real coding tasks inside its editor, Grok 4.7 lands in the middle: pricier per task than GPT-6 Astra and Claude Sonnet 5, but still short of Fable 5.1, which wins at every price point on the chart.
The model scored second to Claude Fable 5.1 on GDPval and AA-Briefcase, and second to GPT-6 Astra on EEBench, an electrical-engineering benchmark. Grok 4.7 is running on 2.1 trillion parameters with supplemental training on SpaceX engineering data, according to coverage.
Benchmark scores cited are vendor-reported. Independent replication pending.