SpaceXAI (corroborated by VentureBeat and Vercel changelog)·medium signal
Grok 4.7 launched September 21 on a new 2.1-trillion-parameter base, a 40% expansion over Grok 4.6's 1.5 trillion, trained with a longer reinforcement learning schedule on multi-hour problems. It scores 71.0% on DeepSWE v1.1 against 65.2% for 4.6, holds a 500K context window with low/medium/high/xhigh reasoning levels, and keeps 4.6's $2 per million input and $6 per million output pricing. VentureBeat's caveat is worth the ink: the longer reasoning schedule raises token consumption enough that flat per-token pricing may not translate into flat per-task cost.