Received 1007 invalid payload using Gemini Live API

Gemini API
,
13

found the correct way to get both text and audio output from gemini-2.5-flash-preview-native-audio-dialog.

:white_check_mark: Working Solution

Don’t use response_modalities=["AUDIO", "TEXT"] - this causes errors.

Instead, use output_audio_transcription:

python

config = types.LiveConnectConfig(
    response_modalities=["AUDIO"],  # Audio only here
    output_audio_transcription=types.AudioTranscriptionConfig()  # This enables text
)

Then handle both outputs in your receive loop:

python

async for response in session.receive():
    # Text transcription
    if response.server_content and response.server_content.output_transcription:
        text = response.server_content.output_transcription.text
        display_subtitles(text)  # Perfect for subtitles!
    
    # Audio data
    if response.server_content and response.server_content.model_turn:
        for part in response.server_content.model_turn.parts:
            if part.audio and part.audio.data:
                play_audio(part.audio.data)

Hope this helps others facing the same issue!

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