Grok 4.6 matches GPT-5.6 Sol on AI Index

xAI releases Grok 4.6, a model focused on long-running agents and ambitious interactive and visual work. It achieves frontier intelligence on several agentic coding and knowledge work benchmarks, matching GPT-5.6 Sol on the Artificial Analysis Intelligence Index. Available in Cursor, Grok Build, and the API, with 2x included usage for the first week.