SpaceXAI's Grok 4.6 scores 61 on the Artificial Analysis Intelligence Index, joining the frontier alongside GPT-5.6 Sol and behind only Claude Opus 5 (63) and Claude Fable 5 (62). It gains 5 points over Grok 4.5 in just over a month, marking a return to the intelligence frontier.

Grok 4.6 excels in agentic performance with a GDPval-AA v2 Elo of 1753, behind only Claude Opus 5 and statistically tied with Claude Fable 5 and Qwen3.8 Max. It scores 50.7% on τ³-Banking and 88.4% on Terminal-Bench v2.1, placing it among leaders.

Pricing remains unchanged at $2/$6 per 1M input/output tokens, 60% below Claude Opus 5 ($5/$25) and GPT-5.6 Sol ($5/$30). Cost per task is $0.84, keeping Grok 4.6 on the Pareto frontier for agentic evaluations.

On long-horizon knowledge work (AA-Briefcase), Grok 4.6 scores Elo 1577 (Fable 5-tier) and completes tasks in ~53 turns and ~0.5B input tokens, versus ~103 turns and ~2.0B tokens for Claude Opus 5, offering significant efficiency gains.