Batches changedapi/beta/messages/batches
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39733973 The inference speed mode for this request. `"fast"` enables high output-tokens-per-second inference.
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3975 Some models require the `fast-mode-2026-02-01` beta header for any `speed` value. See [fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode?sdk_languages=http) for which models.
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39753977 - `"standard"`
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39773979 - `"fast"`
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73237325 - `name: "memory"`
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7325 Name of the tool.
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7327 This is how the tool will be called by the model and in `tool_use` blocks.
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7329 - `allowed_callers: optional array of "direct" or "code_execution_2025082
7327 Name of the
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