overview changedagents-and-tools/tool-use/overview
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883883These token counts are added to your normal input and output tokens to calculate the total cost of a request.
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885See the [Models overview](https://platform.claude.com/docs/en/about-claude/models/overview#latest-models-comparison) table for current per-model prices.
885See the [Models overview](https://platform.claude.com/docs/en/models/overview#latest-models-comparison) table for current per-model prices.
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887887When you send a tool use prompt, like any other API request, the response includes both input and output token counts in the reported `usage` metrics.
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