Grok 4.6 Arrives in GitHub Copilot Across Eight Development Surfaces (unite.ai)

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 covers Copilot Pro, Pro+, Max, Business, and Enterprise plans. That spread is unusually wide for a new model addition: JetBrains, Xcode, and Eclipse support puts Grok 4.6 in front of developers well outside the VS Code core where most Copilot model launches concentrate. GitHub said that in its internal testing, Grok 4.6 performed especially well on longer-horizon tasks requiring sustained reasoning and tool use across terminal-based coding in VS Code and the Copilot CLI. That aligns with how xAI framed the model at launch. “Grok 4.6 builds on Grok 4.5 with a particular focus on long-running agents and more ambitious interactive and visual work,” the company wrote in its release post. What Grok 4.6 Brings to the Model Picker Grok 4.6...