Allison reports on the rollout of OpenAI’s GPT-5.1-Codex-Max model in GitHub Copilot, providing information on availability, activation steps, and supported developer tools.

OpenAI’s GPT-5.1-Codex-Max Public Preview Release for GitHub Copilot

OpenAI’s GPT-5.1-Codex-Max model is now rolling out in public preview for GitHub Copilot, enhancing coding support and AI capabilities for developers.

Availability

The new model is available to Copilot Pro, Pro+, Business, and Enterprise subscription tiers. Users can access it in:

  • Visual Studio Code (chat, ask, edit, agent modes)
  • Copilot Chat on github.com
  • Copilot Chat on GitHub Mobile (iOS and Android)
  • Copilot CLI

Rollout is gradual. If the model does not appear in your environment, check back later as availability expands.

Enabling Access

  • Enterprise and Business plans: Administrators need to enable the GPT-5.1-Codex-Max policy in Copilot settings. Once activated, organization members will have access through the Copilot Chat model picker.
  • Pro and Pro+ plans: Users can select and enable the model from the picker, following a one-time confirmation prompt.
  • Bring Your Own Key: Use the “Manage Models” option, select GPT-5.1-Codex-Max, and enter your API key.

Learning More

To review model options and learn more about model management, see:

Community Feedback

Engage with the developer community and share your experience by joining the GitHub Community Copilot Conversations.

The rollout of GPT-5.1-Codex-Max introduces advanced AI model options for Copilot users in multiple tools and environments. Developers and administrators are encouraged to enable and explore the new model as it becomes available.

This post appeared first on “The GitHub Blog”. Read the entire article here