While GitHub Copilot primarily uses advanced models like GPT-4 (and newer variants), it *does* offer some ability to switch between available model options, particularly for code completions and chat, depending on your IDE and settings.
Unlike tools offering a wide selection (like Cursor), Copilot's model choice is more curated by GitHub/Microsoft. However, you can often switch between a few available options optimized for different purposes (e.g., speed vs. advanced capability).
The available models might include variants like GPT-4o, GPT-4.1, potentially different sizes (like mini versions), or sometimes even models from partners like Claude or Gemini, depending on current previews or general availability.
If GitHub Copilot offers model selection options, you will most likely find them within the Copilot Chat interface in your IDE:
The specific models listed in the dropdowns may change over time as GitHub updates Copilot. Refer to the official Copilot AI Models Documentation for current details.