Annoying that they don't include pricing info in new models, here it is [1]:

Gemini 3.5 Transcribe Live (Per 1M tokens in USD):

    Input: $3.50 or $0.005/min* (audio)
    Output: 21.00 or $0.004/min* (text)

    Input: $2.00 or $0.003/min* (audio)
    Output: $12.00 or $0.002/min* (text)