xAI’s Grok 4.6 is now rolling out in GitHub Copilot, two days after the model’s August 12, 2026 release, the company announced on August 14, 2026. The model — xAI’s current coding flagship, pitched at long-running agents and multi-step work — is selectable from Copilot’s model picker across eight surfaces: VS Code, Visual Studio, the Copilot CLI, the Copilot cloud agent, the Copilot app, JetBrains IDEs, Xcode, and Eclipse. GitHub’s changelog entry, published the same day, confirms the rollout…