[Bug]: Gemini `gemini-2.5-flash-preview-native-audio-dialog` does not work with /realtime

[AyrennC]

What happened?

While providing gemini/gemini-2.5-flash-preview-native-audio-dialog as custom model name, the /realtime endpoint returns error "Unsupported model: gemini-2.5-flash-preview-native-audio-dialog" even though it should be supported and share the same format as other gemini realtime models

Relevant log output

Unsupported model: gemini-2.5-flash-preview-native-audio-dialog
stack trace: Traceback (most recent call last):
  File "/app/litellm/main.py", line 5556, in ahealth_check
    _response = await mode_handlers[mode]()
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/litellm/realtime_api/main.py", line 179, in _realtime_health_check
    raise ValueError(f"Unsupported model: {model}")
ValueError: Unsupported model: gemini-2.5-flash-preview-native-audio-dialog

Are you a ML Ops Team?

No

What LiteLLM version are you on ?

v1.74.15

Twitter / LinkedIn details

No response

[krrishdholakia]

@AyrennC can we see the full stacktrace please?

[AyrennC]

@krrishdholakia , here is the log details

Unsupported model: gemini-2.5-flash-preview-native-audio-dialog
stack trace: Traceback (most recent call last):
  File "/app/litellm/main.py", line 5556, in ahealth_check
    _response = await mode_handlers[mode]()
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/litellm/realtime_api/main.py", line 179, in _realtime_health_check
    raise ValueError(f"Unsupported model: {model}")
ValueError: Unsupported model: gemini-2.5-flash-preview-native-audio-dialog

[taelid]

Bumping this thread as I'm running into a similar issue!

[krrishdholakia]

ack

[github-actions[bot]]

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