xAI released Grok 4.6 on 2026-08-13. Based on Grok 4.5, the model is specialized for long-horizon agent processing and advanced interactive visual tasks. It is equipped with the ability to continuously execute complex tasks spanning multiple steps, such as topic research, information analysis, cross-codebase work, and the development of ideas into finished products.
In benchmarks, Grok 4.6 recorded a score equivalent to GPT-5.6 Sol on the Artificial Analysis Intelligence Index, which aggregates nine tests.
Grok 4.6 is immediately available in Cursor and Grok Build, with the first week including a usage allowance that is typically double the standard amount. On the training front, Grok 4.6 underwent longer supplementary training than Grok 4.5, utilizing curated model-generated data, high-quality engineering data, and improved optimizers. During the SFT stage, traces were regenerated using Grok 4.5, while the RL stage involved training on diverse agent tasks such as knowledge work, general coding, kernel optimization, web development, and CAD.
Source: Grok 4.6 (HN 632pt, 616 comments) (HN Search (backfill))