[Fixes] Azure OpenAI OIDC - allow using litellm defined params for OIDC Auth

[ishaan-jaff]

[Bug Fix] Azure OpenAI OIDC - allow using litellm defined params for OIDC Auth

Bug fix, using OIDC for auth to Azure, you needed to set the client and tenant id as env vars, litellm was not reading the vars defined on the config.yaml

How to repro

model_list:
  - model_name: gpt-4o
    litellm_params:
      model: azure/gpt-4o-2024-05-13
      api_base: https://xxxx.xxxx.xxxx/
      tenant_id: 72f988bf-86f1-41af-91ab-2d7cd011db47
      client_id: 00000000-0000-0000-0000-000000000000
      azure_ad_token: oidc/google/api://AzureADTokenExchange

Key changes

• get_azure_ad_token_from_oidc() takes azure_client_id, azure_tenant_id.
• litellm_params now accepted in Azure SDK client builders; values flow from AzureChatCompletion / AzureTextCompletion → BaseAzureLLM.initialize_azure_sdk_client.
• order of checking params: dynamic parameters → environment → None.

Testing

Unit-test suite expanded to cover all paths.

Relevant issues

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
• I have added a screenshot of my new test passing locally
• My PR passes all unit tests on (make test-unit)[https://docs.litellm.ai/docs/extras/contributing_code]
• My PR's scope is as isolated as possible, it only solves 1 specific problem

Type

🐛 Bug Fix
✅ Test

Changes

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Name	Status	Preview	Comments	Updated (UTC)
litellm	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 29, 2025 4:03am