Grok 4.5 reasoning model joins Copilot

Grok 4.5, xAI’s latest reasoning model, is now rolling out in GitHub Copilot. It is designed for fast, agentic coding and complex multi-step workflows, with a context window of up to 500,000 tokens, support for text and image inputs, as well as low, medium, and high reasoning effort.

In our internal testing, Grok 4.5 showed strong results across terminal-based coding tasks in Visual Studio Code and Copilot CLI. It performed especially well when dispatching tools in parallel and taking direct action, making it a strong fit for exploration, unblocking complex tasks, and time-sensitive coding workflows.

This model is billed at provider list pricing under usage-based billing. See GitHub Copilot’s pricing for models and requests for details.

Availability in GitHub Copilot

Grok 4.5 will be available to Copilot Pro, Pro+, Max, Business, and Enterprise SKUs.

You’ll be able to select the model in the model picker in:

• Visual Studio Code
• Visual Studio
• Copilot CLI
• GitHub Copilot cloud agent
• GitHub Copilot app
• JetBrains
• Xcode
• Eclipse

Rollout will be gradual. Check back soon if you don’t see it yet.

Enabling access

Copilot Enterprise and Copilot Business plan administrators must enable the Grok 4.5 policy in Copilot settings. The policy is off by default.

Learn more

To explore all models available in GitHub Copilot, see our documentation on models and get started with Copilot.

Share your feedback

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