Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
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One change · api

Batches changed

api/messages/batches

Nearest release: v2.1.258, published an hour after 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+45added
Lines−25removed
From line 1,092 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits10to this page, all time

The whole hunk

from line 1092, old and new numbered
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from line 1092
10921092 
10931093 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
10941094 
1095 - `"claude-sonnet-5" or "claude-fable-5" or "claude-mythos-5" or 12 more`
1095 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
10961096 
10971097 The model that will complete your prompt.
10981098 
10991099 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
11001100 
1101 - `"claude-fable-5-1"`
1102 
1103 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
1104 
1105 - `"claude-mythos-5-1"`
1106 
1107 Our most capable model for cybersecurity and biology research, available through trusted access programs
1108 
11011109 - `"claude-sonnet-5"`
11021110 
11031111 High-performance model for coding and agents
from line 1695
16871695 
16881696 - `type: "browser_toolset_20260801"`
16891697 
1690 - `allowed_callers: optional array of "direct" or "code_execution_20250825" or "code_execution_20260120" or "code_execution_20260521"`
1691 
1692 - `"direct"`
1693 
1694 - `"code_execution_20250825"`
1695 
1696 - `"code_execution_20260120"`
1697 
1698 - `"code_execution_20260521"`
1699 
17001698 - `cache_control: optional CacheControlEphemeral or null`
17011699 
17021700 Create a cache control breakpoint at this content block.
from line 2127
21292127 
21302128 - `type: "computer_toolset_20260801"`
21312129 
2132 - `allowed_callers: optional array of "direct" or "code_execution_20250825" or "code_execution_20260120" or "code_execution_20260521"`
2133 
2134 - `"direct"`
2135 
2136 - `"code_execution_20250825"`
2137 
2138 - `"code_execution_20260120"`
2139 
2140 - `"code_execution_20260521"`
2141 
21422130 - `cache_control: optional CacheControlEphemeral or null`
21432131 
21442132 Create a cache control breakpoint at this content block.
from line 4507
45194507 
45204508 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
45214509 
4522 - `"claude-sonnet-5" or "claude-fable-5" or "claude-mythos-5" or 12 more`
4510 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
45234511 
45244512 The model that will complete your prompt.
45254513 
45264514 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
45274515 
4516 - `"claude-fable-5-1"`
4517 
4518 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
4519 
4520 - `"claude-mythos-5-1"`
4521 
4522 Our most capable model for cybersecurity and biology research, available through trusted access programs
4523 
45284524 - `"claude-sonnet-5"`
45294525 
45304526 High-performance model for coding and agents
from line 5956
59605956 
59615957 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
59625958 
5963 - `"claude-sonnet-5" or "claude-fable-5" or "claude-mythos-5" or 12 more`
5959 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
59645960 
59655961 The model that will complete your prompt.
59665962 
59675963 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
59685964 
5965 - `"claude-fable-5-1"`
5966 
5967 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
5968 
5969 - `"claude-mythos-5-1"`
5970 
5971 Our most capable model for cybersecurity and biology research, available through trusted access programs
5972 
59695973 - `"claude-sonnet-5"`
59705974 
59715975 High-performance model for coding and agents
from line 7177
71737177 
71747178 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
71757179 
7176 - `"claude-sonnet-5" or "claude-fable-5" or "claude-mythos-5" or 12 more`
7180 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
71777181 
71787182 The model that will complete your prompt.
71797183 
71807184 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
71817185 
7186 - `"claude-fable-5-1"`
7187 
7188 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
7189 
7190 - `"claude-mythos-5-1"`
7191 
7192 Our most capable model for cybersecurity and biology research, available through trusted access programs
7193 
71827194 - `"claude-sonnet-5"`
71837195 
71847196 High-performance model for coding and agents
from line 8350
83388350 
83398351 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
83408352 
8341 - `"claude-sonnet-5" or "claude-fable-5" or "claude-mythos-5" or 12 more`
8353 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
83428354 
83438355 The model that will complete your prompt.
83448356 
83458357 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
8358 
8359 - `"claude-fable-5-1"`
8360 
8361 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
8362 
8363 - `"claude-mythos-5-1"`
8364 
8365 Our most capable model for cybersecurity and biology research, available through trusted access programs
83468366 
83478367 - `"claude-sonnet-5"`
83488368