OpenAI’s GPT-5.6 family is now rolling out in GitHub Copilot. GPT-5.6 comes in three variants, Sol, Terra, and Luna, so you can match the model to the job, whether that’s reasoning over a large codebase, everyday agentic coding, or fast, cost-efficient assistance.
- GPT-5.6 Sol: The highest reasoning ceiling in the family. Best for complex reasoning over large codebases and demanding, long-running agentic work.
- GPT-5.6 Terra: The balanced default. A strong all-round choice for everyday interactive and agentic coding.
- GPT-5.6 Luna: A lightweight, cost-efficient variant for smaller, faster tasks and also the lowest-cost option in the family.
These models are billed at provider list pricing under Usage Based Billing. See GitHub Copilot’s pricing for models and requests for details.
Availability in GitHub Copilot GPT-5.6 Sol will be available to Copilot Pro+, Max, Business, and Enterprise SKUs. GPT-5.6 Terra and GPT-5.6 Luna will be available to Pro, Pro+, Max, Business and Enterprise SKUs.
You’ll be able to select the models in the model picker in:
- Visual Studio Code
- Visual Studio
- Copilot CLI
- GitHub Copilot cloud agent
- GitHub Copilot app
- github.com
- GitHub Mobile iOS and Android
- 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 policy for the GPT-5.6 models 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.
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