Originally published on AI Tech Connect.
What actually changed A bigger base model at the same price. xAI released Grok 4.7 on 21 September 2026 with a 2.1T-parameter base, up roughly 40% from Grok 4.6's 1.5T, and left list pricing at $2 per million input tokens and $6 per million output tokens. Four self-reported benchmark jumps, the largest of them on Terminal-Bench 4.0, where xAI's harness puts 4.7 at 38.0% against 4.6's 20.3%. That headline number is contested. Artificial Analysis, measuring independently, reports roughly 26% on the same benchmark. The price may not be the price. VentureBeat flags high token consumption, which can erode the advertised advantage once you count tokens actually burned on real work. It is not a clean sweep. Fable 5.1 Max still leads several coding and long-task evaluations. The pattern of the…
