Create Session changedapi/beta/sessions/create
Nearest release: v2.1.238, published under 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+6added
Lines−4removed
From line
17
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits23to this page, all time
The whole hunk
from line 17, old and new numbered
/
from line 17
1717
1818 - `string`
1919
20 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 30 more`
20 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 31 more`
2121
2222 - `"message-batches-2024-09-24"`
2323
from line 63
6363
6464 - `"user-profiles-2026-03-24"`
6565
66 - `"user-profiles-2026-08-18"`
67
6668 - `"advisor-tool-2026-03-01"`
6769
6870 - `"managed-agents-2026-04-01"`
from line 141
139141
140142 - `model: optional BetaManagedAgentsModel or BetaManagedAgentsModelConfigParams`
141143
142 Replacement model. Accepts the model string, e.g. `claude-opus-4-6`, or a `model_config` object. Omit to use the agent's model.
144 Replacement model. Accepts the model string, e.g. `claude-opus-5`, or a `model_config` object. Omit to use the agent's model.
143145
144146 - `BetaManagedAgentsModel = "claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more or string`
145147
from line 1520
15181520 }
15191521 ],
15201522 "model": {
1521 "id": "claude-sonnet-4-6",
1523 "id": "claude-opus-5",
15221524 "effort": {
15231525 "type": "low"
15241526 },
from line 1540
15381540 }
15391541 ],
15401542 "model": {
1541 "id": "claude-sonnet-4-6",
1543 "id": "claude-opus-5",
15421544 "effort": {
15431545 "type": "low"
15441546 },
No line in this hunk matches that.