TheModelDesk

xAI released Grok 4.6 on August 12, 2026, advancing its capabilities from Grok 4.5 with emphasis on extended agentic workflows and visual development tasks.

The model underwent extended supplemental training using curated model-generated data for reasoning and technical concepts, alongside high-quality engineering data and refined optimization techniques. Supervised fine-tuning trajectories were regenerated using Grok 4.5 across reasoning, agent harnesses, and domains including STEM, software engineering, and knowledge work. The model was then trained on diverse agentic reinforcement learning tasks spanning knowledge work, general coding, kernel optimization, web development, and computer-aided design.

On composite benchmarking, Grok 4.6 matches GPT-5.6 Sol, achieving a 61 score on the Artificial Analysis Intelligence Index. The model demonstrates notable performance across specific agentic and coding benchmarks: 69.9% on CursorBench v3.2, 65.9% on DeepSWE v1.1, 61.3% on FrontierCode v1.1, and 57.5% on APEX-Agents. It shows particular strength in long-horizon project work, with improved first passes on visual and interactive applications and demonstrated self-testing behavior across extended task sequences.

Grok 4.6 is immediately available in Cursor and Grok Build, with 2× included usage credits for the first week. API access is available through the xAI console and via partners including OpenRouter, Vercel, and Cloudflare. Pricing is set at $2 per million input tokens and $6 per million output tokens, with a fast variant at double cost.

Safeguards were improved and calibrated to the model's expanded capabilities, with xAI conducting its widest pre-deployment testing suite and continued post-deployment evaluation.