Support model selection when requesting Copilot code review from `gh pr`

[eevmanu]

Describe the feature or problem you’d like to solve

GitHub CLI now supports requesting Copilot code review from the terminal, which appears to address:

• allow to assign Copilot as reviewer using gh cli #10598

Examples documented in the changelog include:

• gh pr edit --add-reviewer @copilot
• gh pr create --reviewer @copilot

Related references:

• GitHub changelog (2026-03-11): Request Copilot code review from GitHub CLI
• GitHub changelog (2026-03-05): Pick a model for @copilot in pull request comments

However, I could not find any way to choose which model Copilot should use for the review.

I checked the current implementation around:

• pkg/cmd/pr/review/review.go
• pkg/cmd/pr/shared/params.go
• pkg/cmd/pr/create/create.go
• api/queries_repo_test.go

and related PRs:

• gh pr edit: Add support for Copilot as reviewer with search capability, performance and accessibility improvements #12567
• gh pr create: login-based reviewer requests and search-based interactive selection #12627
• gh pr view and gh issue view: show friendly display names for all actors #12854

From what I can tell, the CLI supports @copilot as a reviewer identity, but there does not seem to be any parameter or plumbing for passing a model name along with the review request.

Proposed solution

If the backend/product supports model selection for Copilot code review, it would be helpful for gh to expose it.

Possible UX ideas:

gh pr edit 123 --add-reviewer @copilot --copilot-model gpt-5
gh pr create --reviewer @copilot --copilot-model gpt-5

or possibly:

gh pr edit 123 --add-reviewer @copilot:gpt-5
gh pr create --reviewer @copilot:gpt-5

Related issue: #10598

[BagToad]

Hey @eevmanu, thanks for the request. I don't think this is currently possible due to API limitations, so I'll label this blocked for now. One for the platform teams to consider.

[github-actions]

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