Using the AI Toolkit extension to add more models to Copilot Chat in VS Code (#57395)

Co-authored-by: Siara <108543037+SiaraMist@users.noreply.github.com>

content/copilot/how-tos/use-ai-models/change-the-chat-model.md

@@ -61,7 +61,47 @@ These instructions are for {% data variables.product.prodname_vscode %}. For ins
 {% data reusables.copilot.chat-model-limitations-ide %}
 
 {% data reusables.copilot.open-chat-vs-code %}
-1. In the bottom right of the chat view, select the **CURRENT-MODEL** {% octicon "chevron-down" aria-hidden="true" aria-label="chevron-down" %} dropdown menu, then click the AI model of your choice.
+1. At the bottom of the chat view, select the **CURRENT-MODEL** {% octicon "chevron-down" aria-hidden="true" aria-label="chevron-down" %} dropdown menu, then click the AI model of your choice.
+
+## Adding more models
+
+You can expand the model options that are available to power {% data variables.copilot.copilot_chat_short %}. You can add models from:
+
+* **A model provider**—such as Anthropic, Gemini, OpenAI, and others.
+* **The AI Toolkit for {% data variables.product.prodname_vscode %}**.
+
+> [!NOTE] Using the AI Toolkit for {% data variables.product.prodname_vscode_shortname %} is in {% data variables.release-phases.public_preview %} and subject to change.
+
+### Prerequisites
+
+* Depending on the provider or model you choose, you may need to supply an API key, or model ID, from the provider, or a {% data variables.product.github %} {% data variables.product.pat_generic %} (PAT).
+* To add models from the AI Toolkit for {% data variables.product.prodname_vscode %}, you must <a href="vscode:extension/ms-windows-ai-studio.windows-ai-studio">install the AI Toolkit extension</a>.
+
+### Adding models
+
+1. In the {% data variables.product.prodname_copilot_short %} chat view, click the **CURRENT-MODEL** {% octicon "chevron-down" aria-hidden="true" aria-label="chevron-down" %} dropdown menu.
+1. Click **Manage Models**.
+
+   ![Screenshot of the 'Manage Models' option, highlighted with a dark orange outline.](/assets/images/help/copilot/vsc-manage-models-option.png)
+
+   A list of providers is displayed.
+
+   If you have installed the AI Toolkit, then additional providers, added via the AI Toolkit, are also listed.
+
+   ![Screenshot of the 'Manage Language Models' list.](/assets/images/help/copilot/vsc-manage-models-list.png)
+
+1. Click the provider whose model(s) you want to add.
+1. Depending on which provider you selected, you may be prompted to enter a {% data variables.product.github %} PAT, an API key for the provider, or a model ID for a specific model.
+
+   Enter the required information, then press <kbd>Enter</kbd>.
+
+   A list of available models is displayed.
+
+1. Select the model(s) you want to add, then click **OK**.
+
+The models you selected are now available in the model picker in the chat view.
+
+If you added a model from a provider via the AI Toolkit then the first time you use the model, you will be prompted to download it. You may also be prompted to authenticate with the provider.
 
 > [!TIP] If you're already using chat with {% data variables.copilot.copilot_auto_model_selection_short %}, you'll need to start a new chat session to switch models. To start a new session, in the top right of the chat view, click {% octicon "plus" aria-label="new chat" %} new chat.
 
@@ -137,3 +177,9 @@ To use multi-model {% data variables.copilot.copilot_chat_short %}, you must ins
 
 * [AUTOTITLE](/copilot/using-github-copilot/ai-models/changing-the-ai-model-for-copilot-code-completion)
 * [AUTOTITLE](/copilot/reference/ai-models/model-comparison)
+
+{% vscode %}
+
+* [AI language models in VS Code](https://code.visualstudio.com/docs/copilot/language-models#_bring-your-own-language-model-key) in the {% data variables.product.prodname_vscode %} documentation.
+
+{% endvscode %}

content/copilot/reference/ai-models/supported-models.md

@@ -25,9 +25,11 @@ contentType: reference
 
 Depending on your {% data variables.product.prodname_copilot_short %} plan and where you're using it—such as {% data variables.product.prodname_dotcom_the_website %} or an IDE—you may have access to different models.
 
->[!NOTE] Model availability is subject to change. Some models may be replaced or updated over time.
+> [!NOTE]
+> * Model availability is subject to change. Some models may be replaced or updated over time.
+> * In {% data variables.product.prodname_vscode %} you can add more models than those that are available by default with your {% data variables.product.prodname_copilot_short %} subscription. See [AUTOTITLE](/copilot/how-tos/use-ai-models/change-the-chat-model?tool=vscode#adding-more-models).
 
-For all AI models, input prompts and output completions run through {% data variables.product.prodname_copilot %}'s content filters for harmful, offensive, or off-topic content, and for public code matching when enabled.
+For all of the default AI models, input prompts and output completions run through {% data variables.product.prodname_copilot %}'s content filters for harmful, offensive, or off-topic content, and for public code matching when enabled.
 
 ## Supported AI models in {% data variables.product.prodname_copilot_short %}
 

data/reusables/copilot/editor-preview-settings.md

@@ -1 +1 @@
-If you're using a {% data variables.copilot.copilot_business_short %}{% ifversion ghec %} or {% data variables.copilot.copilot_enterprise_short %}{% endif %} plan, the organization{% ifversion ghec %} or enterprise{% endif %} that provides your plan must enable the **Editor preview features** setting. See [AUTOTITLE](/enterprise-cloud@latest/copilot/managing-copilot/managing-github-copilot-in-your-organization/managing-policies-for-copilot-in-your-organization#enabling-copilot-features-in-your-organization){% ifversion ghec %} or [AUTOTITLE](/enterprise-cloud@latest/copilot/managing-copilot/managing-copilot-for-your-enterprise/managing-policies-and-features-for-copilot-in-your-enterprise#configuring-policies-for-github-copilot){% endif %}.
+If you're using a {% data variables.copilot.copilot_business_short %} or {% data variables.copilot.copilot_enterprise_short %} plan, the organization or enterprise that provides your plan must enable the **Editor preview features** setting. See [AUTOTITLE](/enterprise-cloud@latest/copilot/managing-copilot/managing-github-copilot-in-your-organization/managing-policies-for-copilot-in-your-organization#enabling-copilot-features-in-your-organization) or [AUTOTITLE](/copilot/managing-copilot/managing-copilot-for-your-enterprise/managing-policies-and-features-for-copilot-in-your-enterprise#configuring-policies-for-github-copilot).