UsageMetrics

Canonical backend-calculated usage metrics. Character counts use Unicode NFC code points, exclude whitespace, and count punctuation for all languages.

{
    "inputChars": 0,
    "outputChars": 0,
    "audioSeconds": 0,
    "inputTokens": 0,
    "outputTokens": 0,
    "totalTokens": 0,
    "requestCount": 1
}