Create a Message Batch changedapi/messages/batches/create
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Lines+91added
Lines−83removed
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First seen
14 Aug 2026
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Recorded edits13to this page, all time
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10941094 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
10951095
1096 - `string`
1096 - `"claude-sonnet-5-5" or "claude-fable-5-1" or "claude-opus-5-5" or 16 more`
10971097
1098 - `"claude-fable-5-1" or "claude-opus-5-5" or "claude-mythos-5-1" or 15 more`
1099
11001098 The model that will complete your prompt.
11011099
11021100 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
11031101
1102 - `"claude-sonnet-5-5"`
1103
1104 Efficient model for coding and agents
1105
11041106 - `"claude-fable-5-1"`
11051107
11061108 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
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11151117
11161118 - `"claude-sonnet-5"`
11171119
1118 High-performance model for coding and agents
1120 Efficient model for coding and agents
11191121
11201122 - `"claude-fable-5"`
11211123
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11751177
11761178 New class of intelligence, strongest in coding and cybersecurity
11771179
1180 - `string`
1181
11781182 - `cache_control: optional CacheControlEphemeral or null`
11791183
11801184 Top-level cache control automatically applies a cache_control marker to the last cacheable block in the request.
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12951299
12961300 - `stream: optional boolean`
12971301
1298 Whether to incrementally stream the response using server-sent events.
1302 Whether to incrementally stream the response using server-sent events. When `true`, SDKs return a raw event stream.
12991303
1300 See [streaming](https://platform.claude.com/docs/en/build-with-claude/streaming) for details.
1304 In the TypeScript, Python and Ruby SDKs, the recommended way to stream is `messages.stream()`. It sets `stream` for you and accumulates the events into the final message. See [Streaming with SDKs](https://platform.claude.com/docs/en/build-with-claude/streaming#streaming-with-sdks) for an example in each language.
13011305
13021306 - `system: optional string or array of TextBlockParam`
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13541358 - `ThinkingConfigDisabled object`
13551359
13561360 - `type: "disabled"`
1361
1362 - `ThinkingConfigBetweenTools object`
1363
1364 - `type: "between_tools"`
13571365
13581366 - `ThinkingConfigAdaptive object`
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