diff --git a/apps/server/src/provider/model-manifest.json b/apps/server/src/provider/model-manifest.json
index 0ac967281144..46c192a8d228 100644
--- a/apps/server/src/provider/model-manifest.json
+++ b/apps/server/src/provider/model-manifest.json
@@ -1,6 +1,6 @@
 {
   "version": 1,
-  "updatedAt": "2026-10-07T19:00:00Z",
+  "updatedAt": "2026-10-07T19:30:00Z",
   "compatibility": [
     {
       "driver": "codex",
@@ -469,6 +469,53 @@
             "claudeCode": { "fixedContextWindowTokens": 200000 }
           }
         },
+        "sonnet-5-5": {
+          "capabilities": {
+            "optionDescriptors": [
+              {
+                "id": "effort",
+                "label": "Reasoning",
+                "type": "select",
+                "options": [
+                  {
+                    "id": "low",
+                    "label": "Low"
+                  },
+                  {
+                    "id": "medium",
+                    "label": "Medium",
+                    "isDefault": true
+                  },
+                  {
+                    "id": "high",
+                    "label": "High"
+                  },
+                  {
+                    "id": "xhigh",
+                    "label": "Extra High"
+                  },
+                  {
+                    "id": "max",
+                    "label": "Max"
+                  },
+                  {
+                    "id": "ultrathink",
+                    "label": "Ultrathink"
+                  }
+                ],
+                "promptInjectedValues": ["ultrathink"]
+              }
+            ]
+          },
+          "adapter": {
+            "claudeCode": {
+              "effortMap": {
+                "ultrathink": null
+              },
+              "fixedContextWindowTokens": 1000000
+            }
+          }
+        },
         "sonnet-5": {
           "capabilities": {
             "optionDescriptors": [
@@ -641,7 +688,7 @@
           "aliases": ["sonnet", "sonnet-5.5", "claude-sonnet-5.5"],
           "status": "current",
           "badge": "new",
-          "profile": "sonnet-5",
+          "profile": "sonnet-5-5",
           "adapter": { "claudeCode": { "minVersion": "2.1.284" } }
         },
         {