Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
One change · api

Archive Session Thread changed

api/beta/sessions/threads/archive

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+12added
Lines−2removed
From line 18 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits9to this page, all time

The whole hunk

from line 18, old and new numbered
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from line 18
1818 
1919 - `string`
2020 
21 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more`
21 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 41 more`
2222 
2323 - `"message-batches-2024-09-24"`
2424 
from line 102
102102 
103103 - `"ce-user-management-2026-07-13"`
104104 
105 - `"mid-conversation-output-config-2026-07-01"`
106 
107 - `"thinking-binding-controls-2026-08-01"`
108 
109 - `"mid-conversation-system-clear-at-2026-08-21"`
110 
105111## Returns
106112 
107113- `BetaManagedAgentsSessionThread object`
from line 148
142148 
143149 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
144150 
145 - `"claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more`
151 - `"claude-fable-5-1" or "claude-sonnet-5" or "claude-fable-5" or 11 more`
146152 
147153 The model that will power your agent.
148154 
149155 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
156 
157 - `"claude-fable-5-1"`
158 
159 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
150160 
151161 - `"claude-sonnet-5"`
152162