[2026-03-05] Pick a model when tagging Copilot coding agent with @copilot in a pull request comment (#59621)

Author: timrogers

content/copilot/how-tos/use-copilot-agents/coding-agent/changing-the-ai-model.md

@@ -20,7 +20,7 @@ In supported entrypoints, you can select the model used by {% data variables.cop
 You may find that different models perform better, or provide more useful responses, depending on the type of tasks you give {% data variables.product.prodname_copilot_short %}.
 
 > [!NOTE]
-> Model selection for {% data variables.copilot.copilot_coding_agent %} is only supported when assigning an issue to {% data variables.product.prodname_copilot_short %} on {% data variables.product.prodname_dotcom_the_website %}, or when starting a task from the agents tab, agents panel, {% data variables.product.prodname_mobile %} or the Raycast launcher. Where a model picker is not available, Auto will be used automatically. See [AUTOTITLE](/copilot/how-tos/use-copilot-agents/coding-agent/create-a-pr).
+> Model selection for {% data variables.copilot.copilot_coding_agent %} is only supported when assigning an issue to {% data variables.product.prodname_copilot_short %} on {% data variables.product.prodname_dotcom_the_website %}, when mentioning `@copilot` in a pull request comment on {% data variables.product.prodname_dotcom_the_website %}, or when starting a task from the agents tab, agents panel, {% data variables.product.prodname_mobile %} or the Raycast launcher. Where a model picker is not available, Auto will be used automatically. See [AUTOTITLE](/copilot/how-tos/use-copilot-agents/coding-agent/create-a-pr).
 
 ## Supported models
 

content/copilot/how-tos/use-copilot-agents/coding-agent/make-changes-to-an-existing-pr.md

@@ -16,7 +16,7 @@ category:
 
 ## Introduction
 
-You can ask {% data variables.product.prodname_copilot_short %} to make changes to an existing pull request created by a human developer.
+You can ask {% data variables.product.prodname_copilot_short %} to make changes to an existing pull request created by a human developer by mentioning `@copilot` in a comment.
 
 {% data variables.product.prodname_copilot_short %} will create a child pull request, using the existing pull request's branch as the base branch.  Once it has finished work on the changes you requested, it requests your review on the child pull request.
 
@@ -27,7 +27,9 @@ You can ask {% data variables.product.prodname_copilot_short %} to make changes
 ## Asking {% data variables.product.prodname_copilot_short %} to make changes
 
 1. Navigate to the pull request that you want {% data variables.product.prodname_copilot_short %} to make changes to.
-1. Leave a comment or review mentioning {% data variables.product.prodname_copilot_short %} with `@copilot`.
+1. Write a comment or review mentioning {% data variables.product.prodname_copilot_short %} with `@copilot`.
+1. Optionally, when leaving a pull request comment (not a review or review comment) through the {% data variables.product.github %} web interface, select a model using the model picker.
+1. Submit your comment or review.
 
 {% data variables.product.prodname_copilot_short %} will open a child pull request, using the existing pull request's branch as the base branch.
 

content/copilot/how-tos/use-copilot-agents/coding-agent/review-copilot-prs.md

@@ -30,6 +30,8 @@ After {% data variables.product.prodname_copilot_short %} has finished working o
 
 You can ask {% data variables.product.prodname_copilot_short %} to make changes by mentioning `@copilot` in pull request comments, or you can check out {% data variables.product.prodname_copilot_short %}'s branch and make changes yourself.
 
+Optionally, when submitting a pull request comment (not a review or review comment) through the {% data variables.product.github %} web interface, you can select a model using the model picker. By default, {% data variables.product.prodname_copilot_short %} will use the model originally used to create the pull request.
+
 > [!TIP]
 > We recommend you batch your review comments instead of submitting them individually.