diff --git a/packages/sdk/js/src/v2/gen/types.gen.ts b/packages/sdk/js/src/v2/gen/types.gen.ts
index 9c4f0e50d..7fad08e71 100644
--- a/packages/sdk/js/src/v2/gen/types.gen.ts
+++ b/packages/sdk/js/src/v2/gen/types.gen.ts
@@ -429,6 +429,10 @@ export type Part =
       prompt: string
       description: string
       agent: string
+      model?: {
+        providerID: string
+        modelID: string
+      }
       command?: string
     }
   | ReasoningPart
@@ -1853,6 +1857,10 @@ export type SubtaskPartInput = {
   prompt: string
   description: string
   agent: string
+  model?: {
+    providerID: string
+    modelID: string
+  }
   command?: string
 }
 
diff --git a/packages/sdk/openapi.json b/packages/sdk/openapi.json
index 20b1029fc..fd46f7c78 100644
--- a/packages/sdk/openapi.json
+++ b/packages/sdk/openapi.json
@@ -6842,6 +6842,18 @@
               "agent": {
                 "type": "string"
               },
+              "model": {
+                "type": "object",
+                "properties": {
+                  "providerID": {
+                    "type": "string"
+                  },
+                  "modelID": {
+                    "type": "string"
+                  }
+                },
+                "required": ["providerID", "modelID"]
+              },
               "command": {
                 "type": "string"
               }
@@ -9797,6 +9809,18 @@
           "agent": {
             "type": "string"
           },
+          "model": {
+            "type": "object",
+            "properties": {
+              "providerID": {
+                "type": "string"
+              },
+              "modelID": {
+                "type": "string"
+              }
+            },
+            "required": ["providerID", "modelID"]
+          },
           "command": {
             "type": "string"
           }