Batches changedapi/messages/batches
Nearest release: v2.1.301, published 11 hours before 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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Lines+42added
Lines−0removed
From line
1,295
where the diff opens
First seen
14 Aug 2026
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Recorded edits24to this page, all time
The whole hunk
from line 1295, old and new numbered
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from line 1295
12951295
12961296 - `"standard_only"`
12971297
1298 - `speed: optional "standard" or "fast" or null`
1299
1300 The inference speed mode for this request. `"fast"` enables high output-tokens-per-second inference.
1301
1302 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.
1303
1304 - `"standard"`
1305
1306 - `"fast"`
1307
12981308 - `stop_sequences: optional array of string`
12991309
13001310 Custom text sequences that will cause the model to stop generating.
from line 5046
50365046
50375047 - `"batch"`
50385048
5049 - `speed: "standard" or "fast" or null`
5050
5051 The inference speed mode used for this request.
5052
5053 - `"standard"`
5054
5055 - `"fast"`
5056
50395057 - `MessageBatchErroredResult object`
50405058
50415059 - `type: "errored"`
from line 6567
65496567
65506568 - `"batch"`
65516569
6570 - `speed: "standard" or "fast" or null`
6571
6572 The inference speed mode used for this request.
6573
6574 - `"standard"`
6575
6576 - `"fast"`
6577
65526578 - `MessageBatchErroredResult object`
65536579
65546580 - `type: "errored"`
from line 7860
78347860
78357861 - `"batch"`
78367862
7863 - `speed: "standard" or "fast" or null`
7864
7865 The inference speed mode used for this request.
7866
7867 - `"standard"`
7868
7869 - `"fast"`
7870
78377871 - `MessageBatchErroredResult object`
78387872
78397873 - `type: "errored"`
from line 8641
86078641
86088642 - `TextEditorCodeExecutionToolResultError object`
86098643
8610 - `type: "text_editor_code_execution_tool_result_error"`
8611
8612 default: text_editor_code_execution_tool_result_error
8613
8614 - `error_code: TextEditorCodeExecutionToolResultErrorCode`
8615
8616 - `"invalid_tool_input"`
8617
8618 - `"unavailable"`
8619
8620 - `"too_many_requests"`
8621
8622 - `"execution_time_exceeded"`
8623
8624 - `"file_not_found"`
8625
8626 - `error_message: string or null`
8627
8628 - `TextEditorCodeExecutionViewResultBlock object`
8629
8630 - `type: "text_editor_code_execution_view_result"`
8631
8632 default: text_editor_code_execution_view_result
8633
8634 - `content: string`
8635
8636 - `file_type: "text" or "image" or "pdf"`
8637
8638 - `"text"`
8639
8640 - `"image"`
8641
8642 - `"pdf"`
8643
8644 - `num_lines: number or null`
8645
8646 - `start_line: number or null`
8647
8648 - `total_lines: n
8644 - `type: "text_e
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