Create a Message Batch changedapi/beta/messages/batches/create
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1515
1616## Headers
1717
18- `"anthropic-version": optional string`
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20 The version of the Claude API you want to use.
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22 Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
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1824- `"anthropic-beta": optional array of AnthropicBeta`
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2026 Optional header to specify the beta version(s) you want to use.
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