[Feature] Adding Optional scope Param to /models

[yuneng-jiang]

Relevant issues

This PR adds an optional scope param to the /models endpoint. When a team admin, org admin, or proxy admin calls /models with the scope=expands, this will override and show all proxy models. This is to support the new logic around model select on the UI, where team admins and org admins need access to all proxy models.

Tested with the following:

1. Org admin: User has no-default-models, Org has all-proxy-models
2. Team admin: User has no-default-models, team has all-proxy-models

endpoint behaves as expected, and returns all proxy models

Tested the regular case:

1. Normal Internal user with no-default-models, not in a team or an org

endpoint behaves as expected, and only returns no-default-models

Pre-Submission checklist

Please complete all items before asking a LiteLLM maintainer to review your PR

• I have Added testing in the tests/litellm/ directory, Adding at least 1 test is a hard requirement - see details
• My PR passes all unit tests on make test-unit
• My PR's scope is as isolated as possible, it only solves 1 specific problem

CI (LiteLLM team)

CI status guideline:

• 50-55 passing tests: main is stable with minor issues.
• 45-49 passing tests: acceptable but needs attention
• <= 40 passing tests: unstable; be careful with your merges and assess the risk.

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Type

🆕 New Feature
✅ Test

Changes

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Project	Deployment	Review	Updated (UTC)
litellm	Ready	Preview, Comment	Jan 22, 2026 0:44am