SpaceXAI launches Grok 4.6, beats GPT-5.6 and Fable 5 on agent benchmarks

SpaceXAI released Grok 4.6 on Aug 12 with strong agent capabilities. Grok 4.6 scores 1753 Elo on GDPVal-AA v2, beating Fable 5 Max (1741) and GPT-5.6 Sol Max (1728); 61 on Artificial Analysis Intelligence Index, tied with GPT-5.6 Sol Max. The model is priced at $2/M input and $6/M output tokens, roughly half of frontier peers. Available via Cursor, Grok Build, OpenRouter, Vercel and Cloudflare with 2x usage credits for the first week.