bash-tool changedagents-and-tools/tool-use/bash-tool
Nearest release: v2.1.296, published an hour after this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
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First seen
14 Aug 2026
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Recorded edits10to this page, all time
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19211921The bash tool definition adds the following input tokens to your request. This is in addition to the per-model [tool use system prompt](https://platform.claude.com/docs/en/agents-and-tools/tool-use/overview#pricing) that applies whenever any tool is present.
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1923| Model | Additional input tokens |
1924| --------------------------------------------------- | ----------------------- |
1925| Claude Opus 5, Claude Opus 4.8, and Claude Opus 4.7 | 325 tokens |
1926| Claude Opus 4.6, Claude Sonnet 4.6, and earlier | 244 tokens |
1923| Model | Additional input tokens |
1924| ----------------------------------------------------- | ----------------------- |
1925| Claude 4.7 and later models and Claude Mythos Preview | 325 tokens |
1926| Claude 4.6 and earlier models | 244 tokens |
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19281928Additional tokens are consumed by:
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No line in this hunk matches that.