By default, Copilot Chat uses a base model to provide fast, capable responses for a wide range of tasks, such as summarization, knowledge-based questions, reasoning, math, and coding.
However, you are not limited to using this model. You can choose from a selection of other models, each with its own particular strengths. You may have a favorite model that you like to use, or you might prefer to use a particular model for inquiring about a specific subject.
Note
Different models have different premium request multipliers, which can affect how much of your monthly usage allowance is consumed. For details, see About premium requests.
Copilot allows you to change the model during a chat and have the alternative model used to generate responses to your prompts.
Note
- Multiple model support in Copilot Chat is in public preview and is subject to change.
- You can only use an alternative AI model in the immersive view of Copilot Chat. This is the full-page version of Copilot Chat that's displayed at https://github.com/copilot. The Copilot Chat panel always uses the default model.
AI models for Copilot Chat
The following models are currently available in the immersive mode of Copilot Chat:
- GPT-4o
- Claude 3.5 Sonnet
- Claude 3.7 Sonnet
- Gemini 2.0 Flash
- o1
- o3-mini
For more information about these models, see Choosing the right AI model for your task.
Limitations of AI models for Copilot Chat
- If you want to use the skills listed in the table above, on the GitHub website, only the GPT-4o, Claude Sonnet, and Gemini 2.0 Flash models are supported.
- Experimental pre-release versions of the models may not interact with all filters correctly, including the duplication detection filter.
Changing your AI model
These instructions are for Copilot on the GitHub website. For instructions on different clients, click the appropriate tab at the top of this page.
If you access Copilot Chat through a Copilot Business subscription, your organization must grant members the ability to switch to a different model. See Managing policies for Copilot in your organization.
Note
If you use Copilot Extensions, they may override the model you select.
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In the top right of any page on GitHub, click beside the icon and click Immersive in the dropdown menu.
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At the top of the immersive view, select the CURRENT-MODEL dropdown menu, then click the AI model of your choice.
