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 Events changed

api/beta/sessions/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 26 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 26, old and new numbered
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2626 
2727 - `string`
2828 
29 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more`
29 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 41 more`
3030 
3131 - `"message-batches-2024-09-24"`
3232 
from line 110
110110 
111111 - `"ce-user-management-2026-07-13"`
112112 
113 - `"mid-conversation-output-config-2026-07-01"`
114 
115 - `"thinking-binding-controls-2026-08-01"`
116 
117 - `"mid-conversation-system-clear-at-2026-08-21"`
118 
113119## Returns
114120 
115121- `BetaManagedAgentsStreamSessionEvents = BetaManagedAgentsUserMessageEvent or BetaManagedAgentsUserInterruptEvent or BetaManagedAgentsUserToolConfirmationEvent or 34 more`
from line 1588
15821588 
15831589 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
15841590 
1585 - `"claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more`
1591 - `"claude-fable-5-1" or "claude-sonnet-5" or "claude-fable-5" or 11 more`
15861592 
15871593 The model that will power your agent.
15881594 
15891595 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
1596 
1597 - `"claude-fable-5-1"`
1598 
1599 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
15901600 
15911601 - `"claude-sonnet-5"`
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