One change

create

api/beta/sessions/create

20 Aug 2026 17:07 UTC first seen 14 Aug 2026 The page's own history The capture it came from

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.

api/beta/sessions/create Changed · +6 / -4 lines

from line 17

 
   - `string`
 
-  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 30 more`
+  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 31 more`
 
     - `"message-batches-2024-09-24"`

from line 63

 
     - `"user-profiles-2026-03-24"`
 
+    - `"user-profiles-2026-08-18"`
+
     - `"advisor-tool-2026-03-01"`
 
     - `"managed-agents-2026-04-01"`

from line 141

 
     - `model: optional BetaManagedAgentsModel or BetaManagedAgentsModelConfigParams`
 
-      Replacement model. Accepts the model string, e.g. `claude-opus-4-6`, or a `model_config` object. Omit to use the agent's model.
+      Replacement model. Accepts the model string, e.g. `claude-opus-5`, or a `model_config` object. Omit to use the agent's model.
 
       - `BetaManagedAgentsModel = "claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more or string`

from line 1520

       }
     ],
     "model": {
-      "id": "claude-sonnet-4-6",
+      "id": "claude-opus-5",
       "effort": {
         "type": "low"
       },

from line 1540

             }
           ],
           "model": {
-            "id": "claude-sonnet-4-6",
+            "id": "claude-opus-5",
             "effort": {
               "type": "low"
             },