Fix: User specified async client ignored with Gemini streaming+async

[Chesars]

Relevant issues

Fixes #17148

Pre-Submission checklist

• I have Added testing in the tests/litellm/ directory
• I have added a screenshot of my new test passing locally
• 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

Type

🐛 Bug Fix

Summary

When using litellm.acompletion() with stream=True and a custom HTTP client, the client is not beign passed:

# This did NOT work - client was ignored
response = await litellm.acompletion(
    model="gemini/gemini-2.5-pro",
    messages=[...],
    client=custom_client,  # ❌ Ignored
    stream=True,
)

The sync version worked correctly:

# This worked fine
response = litellm.completion(
    model="gemini/gemini-2.5-pro",
    messages=[...],
    client=custom_client,  # ✅ Works
    stream=True,
)

Solution

Added gemini_client parameter to make_call() (async) to preserve the user's custom client, matching the existing pattern in make_sync_call() (sync).

Tests added

• test_async_streaming_uses_custom_client
• test_sync_streaming_uses_custom_client

[vercel]

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Project	Deployment	Preview	Comments	Updated (UTC)
litellm	Ready	Preview	Comment	Dec 5, 2025 7:53pm