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

Stream Session Thread Events changed

api/beta/sessions/threads/events/stream

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 28 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits12to this page, all time

The whole hunk

from line 28, old and new numbered
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2828 
2929 - `string`
3030 
31 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more`
31 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 41 more`
3232 
3333 - `"message-batches-2024-09-24"`
3434 
from line 112
112112 
113113 - `"ce-user-management-2026-07-13"`
114114 
115 - `"mid-conversation-output-config-2026-07-01"`
116 
117 - `"thinking-binding-controls-2026-08-01"`
118 
119 - `"mid-conversation-system-clear-at-2026-08-21"`
120 
115121## Returns
116122 
117123- `BetaManagedAgentsStreamSessionThreadEvents = BetaManagedAgentsUserMessageEvent or BetaManagedAgentsUserInterruptEvent or BetaManagedAgentsUserToolConfirmationEvent or 34 more`
from line 1590
15841590 
15851591 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
15861592 
1587 - `"claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more`
1593 - `"claude-fable-5-1" or "claude-sonnet-5" or "claude-fable-5" or 11 more`
15881594 
15891595 The model that will power your agent.
15901596 
15911597 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
1598 
1599 - `"claude-fable-5-1"`
1600 
1601 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
15921602 
15931603 - `"claude-sonnet-5"`
15941604