Batches changedapi/messages/batches
Nearest release: v2.1.287, published 4 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.
Recorded here
Lines+50added
Lines−30removed
From line
1,159
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits16to this page, all time
The whole hunk
from line 1159, old and new numbered
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from line 1159
11591159
11601160 Powerful intelligence for long-running agents and coding
11611161
1162 - `"claude-mythos-preview"`
1163
1164 **Deprecated**: Will reach end-of-life on June 30, 2026. Please migrate to claude-mythos-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
1165
1166 New class of intelligence, strongest in coding and cybersecurity
1167
11621168 - `"claude-sonnet-4-5"`
11631169
1170 **Deprecated**: Will reach end-of-life on November 30, 2026. Please migrate to claude-sonnet-5-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
1171
11641172 High-performance model for agents and coding
11651173
11661174 - `"claude-sonnet-4-5-20250929"`
11671175
1176 **Deprecated**: Will reach end-of-life on November 30, 2026. Please migrate to claude-sonnet-5-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
1177
11681178 High-performance model for agents and coding
11691179
1170 - `"claude-mythos-preview"`
1171
1172 **Deprecated**: Will reach end-of-life on June 30, 2026. Please migrate to claude-mythos-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
1173
1174 New class of intelligence, strongest in coding and cybersecurity
1175
11761180 - `string`
11771181
11781182 - `cache_control: optional CacheControlEphemeral or null`
from line 4790
47864790
47874791 Powerful intelligence for long-running agents and coding
47884792
4793 - `"claude-mythos-preview"`
4794
4795 **Deprecated**: Will reach end-of-life on June 30, 2026. Please migrate to claude-mythos-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
4796
4797 New class of intelligence, strongest in coding and cybersecurity
4798
47894799 - `"claude-sonnet-4-5"`
47904800
4801 **Deprecated**: Will reach end-of-life on November 30, 2026. Please migrate to claude-sonnet-5-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
4802
47914803 High-performance model for agents and coding
47924804
47934805 - `"claude-sonnet-4-5-20250929"`
47944806
4807 **Deprecated**: Will reach end-of-life on November 30, 2026. Please migrate to claude-sonnet-5-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
4808
47954809 High-performance model for agents and coding
47964810
4797 - `"claude-mythos-preview"`
4798
4799 **Deprecated**: Will reach end-of-life on June 30, 2026. Please migrate to claude-mythos-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
4800
4801 New class of intelligence, strongest in coding and cybersecurity
4802
48034811 - `string`
48044812
48054813 - `role: "assistant"`
from line 6303
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62966304 Powerful intelligence for long-running agents and coding
62976305
6306 - `"claude-mythos-preview"`
6307
6308 **Deprecated**: Will reach end-of-life on June 30, 2026. Please migrate to claude-mythos-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
6309
6310 New class of intelligence, strongest in coding and cybersecurity
6311
62986312 - `"claude-sonnet-4-5"`
62996313
6314 **Deprecated**: Will reach end-of-life on November 30, 2026. Please migrate to claude-sonnet-5-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
6315
63006316 High-performance model for agents and coding
63016317
63026318 - `"claude-sonnet-4-5-20250929"`
63036319
6320 **Deprecated**: Will reach end-of-life on November 30, 2026. Please migrate to claude-sonnet-5-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
6321
63046322 High-performance model for agents and coding
63056323
6306 - `"claude-mythos-preview"`
6307
6308 **Deprecated**: Will reach end-of-life on June 30, 2026. Please migrate to claude-mythos-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
6309
6310 New class of intelligence, strongest in coding and cybersecurity
6311
63126324 - `string`
63136325
63146326 - `role: "assistant"`
from line 7588
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75777589 Powerful intelligence for long-running agents and coding
75787590
7591 - `"claude-mythos-preview"`
7592
7593 **Deprecated**: Will reach end-of-life on June 30, 2026. Please migrate to claude-mythos-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
7594
7595 New class of intelligence, strongest in coding and cybersecurity
7596
75797597 - `"claude-sonnet-4-5"`
75807598
7599 **Deprecated**: Will reach end-of-life on November 30, 2026. Please migrate to claude-sonnet-5-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
7600
75817601 High-performance model for agents and coding
75827602
75837603 - `"claude-sonnet-4-5-20250929"`
75847604
7605 **Deprecated**: Will reach end-of-life on November 30, 2026. Please migrate to claude-sonnet-5-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
7606
75857607 High-performance model for agents and coding
75867608
7587 - `"claude-mythos-preview"`
7588
7589 **Deprecated**: Will reach end-of-life on June 30, 2026. Please migrate to claude-mythos-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
7590
7591 New class of intelligence, strongest in coding and cybersecurity
7592
75937609 - `string`
75947610
75957611 - `role: "assistant"`
from line 8701
86858701
86868702 - `cache_miss_reason: CacheMissReason or null`
86878703
8688 Explains why the prompt cache could not fully reuse the prefix from the request identified by `diagnostics.previous_message_id`. `null` means diagnosis is still pending — the response was serialized before the background comparison completed.
8689
8690 - `CacheMissModelChanged object`
8691
8692 - `type: "model_changed"`
8693
8694 default: model_changed
8695
8696 - `cache_missed_input_tokens: number`
8697
8698 Approximate number of input tokens that would have been read from cache had the prefix matched the previous request.
8699
8700 - `CacheMissSystemChanged object`
8701
8702 - `type: "system_changed"`
8703
8704 default: system_changed
8705
8706 - `cache_missed_input_tokens: number`
8707
8708 Approximate number of input tokens that would have been read from cache had the prefix matched the previous request.
8709
8710 - `CacheMissToolsChanged object`
8711
8712 - `type: "tools_changed"`
8713
8714 default: tools_changed
8715
8716 - `cache_missed_input_tokens: number`
8717
8718 Approximate number of input tokens that would have been read from cache had the prefix matched the previous request.
8719
8720 - `CacheMissMessagesChanged object`
8721
8722 - `type: "messages_changed"`
8723
8724 default: messages_changed
8725
8726 - `cache_missed_input_tokens: number`
8727
8728 Approximate number of input tokens that would have been read from cache had the prefix matched the previous request.
8729
8730 - `CacheMissPreviousMessageNotFound object`
8731
8732 - `type: "previous_message_not_found"`
8733
8734 default: previous_message_not_found
8735
8736 - `CacheMissUnavailable object`
8737
8738 - `type: "unavailable"`
8739
8740 default: unavailable
8741
8742 - `model: Model`
8743
8744 The model that will complete your prompt.
8745
8746 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional
8704 Explains why the prompt cache could not fully reuse the prefix from the request identified by `diagnostics.previous_message_id`. `null` means diagnosis is still pending — the response was serialized before the background comparison complet
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