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

Events changed

api/beta/sessions/threads/events

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+24added
Lines−4removed
From line 32 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 32, old and new numbered
/
lines
from line 32
3232 
3333 - `string`
3434 
35 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more`
35 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 41 more`
3636 
3737 - `"message-batches-2024-09-24"`
3838 
from line 116
116116 
117117 - `"ce-user-management-2026-07-13"`
118118 
119 - `"mid-conversation-output-config-2026-07-01"`
120 
121 - `"thinking-binding-controls-2026-08-01"`
122 
123 - `"mid-conversation-system-clear-at-2026-08-21"`
124 
119125### Returns
120126 
121127- `data: optional array of BetaManagedAgentsSessionEvent`
from line 1594
15881594 
15891595 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
15901596 
1591 - `"claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more`
1597 - `"claude-fable-5-1" or "claude-sonnet-5" or "claude-fable-5" or 11 more`
15921598 
15931599 The model that will power your agent.
15941600 
15951601 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
15961602 
1603 - `"claude-fable-5-1"`
1604 
1605 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
1606 
15971607 - `"claude-sonnet-5"`
15981608 
15991609 High-performance model for coding and agents
from line 2318
23082318 
23092319 - `string`
23102320 
2311 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more`
2321 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 41 more`
23122322 
23132323 - `"message-batches-2024-09-24"`
23142324 
from line 2402
23922402 
23932403 - `"ce-user-management-2026-07-13"`
23942404 
2405 - `"mid-conversation-output-config-2026-07-01"`
2406 
2407 - `"thinking-binding-controls-2026-08-01"`
2408 
2409 - `"mid-conversation-system-clear-at-2026-08-21"`
2410 
23952411### Returns
23962412 
23972413- `BetaManagedAgentsStreamSessionThreadEvents = BetaManagedAgentsUserMessageEvent or BetaManagedAgentsUserInterruptEvent or BetaManagedAgentsUserToolConfirmationEvent or 34 more`
from line 3880
38643880 
38653881 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
38663882 
3867 - `"claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more`
3883 - `"claude-fable-5-1" or "claude-sonnet-5" or "claude-fable-5" or 11 more`
38683884 
38693885 The model that will power your agent.
38703886 
38713887 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
3888 
3889 - `"claude-fable-5-1"`
3890 
3891 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
38723892 
38733893 - `"claude-sonnet-5"`
38743894