Usage metadata for a message, such as token counts.
UsageMetadataThe cost of the input tokens.
The cost details of the input tokens.
Breakdown of input token counts.
Does not need to sum to full input token count. Does not need to have all keys.
Count of input (or prompt) tokens. Sum of all input token types.
The cost of the output tokens.
The cost details of the output tokens.
Breakdown of output token counts.
Does not need to sum to full output token count. Does not need to have all keys.
Count of output (or completion) tokens. Sum of all output token types.