xAI Launches Grok 4.6, Built for Long-Running Agents and Visual Work

xAI released Grok 4.6 on August 12, 2026, positioning it as a flagship model built for “long-running agents and more ambitious interactive and visual work.” The model builds on Grok 4.5 with a particular focus on staying on task across many steps, whether researching a topic, working across a codebase, or turning a broad product idea into a working first version of an application.

Details

• Focus on long-horizon agentic work: xAI says Grok 4.6 shows stronger performance on multi-step tasks across research, coding, and application development, with improved self-testing and verification as tasks get longer
• Visual and interactive projects: the company highlights “stronger first passes on visual and interactive projects than we typically saw with Grok 4.5”
• Benchmarks: Grok 4.6 scores 61 on the Artificial Analysis Intelligence Index, matching OpenAI’s GPT-5.6 Sol and closing to within one point of Anthropic’s Claude Fable 5; other reported scores include CursorBench v3.2 at 69.9%, DeepSWE v1.1 at 65.9%, and AA-Briefcase at 1577
• Safety: xAI says safeguards were recalibrated to match the model’s expanded capabilities
• Pricing: $2 per million input tokens and $6 per million output tokens, with a “fast” variant available at double the price
• Launch promotion: xAI is offering 2x included usage for the first week after launch

How to try it

• Available now in Cursor and in xAI’s own Grok Build tool
• Available via the xAI API, and through partners including OpenRouter, Vercel, and Cloudflare
• Start at x.ai/build or through the API console
• Full announcement: x.ai/news/grok-4-6