ModelUsage(ModelUsage)

{
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    "output_tokens": 0,
    "cache_tokens": 0,
    "images": 0,
    "input_images": 0,
    "generated_images": 0,
    "output_sizes": [
        "string"
    ],
    "characters": 0,
    "seconds": "string",
    "reference_seconds": "string",
    "prompt_tokens": 0,
    "completion_tokens": 0,
    "property1": "string",
    "property2": "string"
}