Grok 4.6 ties GPT-5.6 on intelligence index with top-tier agentic performance at lower cost
ArtificialAnlys · x · 2026-08-12
Artificial Analysis released a detailed evaluation of Grok 4.6. The model scores 61 on the Intelligence Index, joining the frontier alongside GPT-5.6 Sol, trailing only Anthropic's Claude Opus 5 and Claude Fable 5.
Strong Agentic Performance
- Excels in the GDPval-AA v2 evaluation, second only to Claude Opus 5.
- Ranks among the top models in 𝜏³-Banking and Terminal-Bench v2.1.
- Demonstrates high turn-efficiency in the AA-Briefcase benchmark, completing tasks in 53 turns vs. 103 turns for Claude Opus 5.
Highly Cost-Effective
- Headline pricing remains unchanged from Grok 4.5 at $2/$6 per 1M input/output tokens.
- Priced 60%+ below Claude Opus 5 and GPT-5.6 Sol, placing it firmly on the Intelligence vs. Cost Pareto frontier.
Related event: xAI Releases Grok 4.6 with Top Performance and Same Pricing(92 posts)→
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