From 891e4fbde79533b8f5004c0fb6d383ded51bb3f1 Mon Sep 17 00:00:00 2001
From: "t3-code[bot]" <269035359+t3-code[bot]@users.noreply.github.com>
Date: Tue, 22 Sep 2026 17:06:08 +0000
Subject: [PATCH] feat(models): add opus 5.5 without changing existing aliases

Based on the model profile and compatibility investigation in #13087.

Co-authored-by: Anco <anco@bluebarry.ai>
Co-authored-by: Exotic <118054752+extoci@users.noreply.github.com>
---
 apps/server/src/provider/model-manifest.json | 51 ++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/apps/server/src/provider/model-manifest.json b/apps/server/src/provider/model-manifest.json
index 4d6adb4ed2..47576b4796 100644
--- a/apps/server/src/provider/model-manifest.json
+++ b/apps/server/src/provider/model-manifest.json
@@ -95,6 +95,48 @@
             }
           }
         },
+        "opus-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": "ultracode",
+                    "label": "Ultracode",
+                    "description": "xhigh effort plus multi-agent workflow orchestration"
+                  },
+                  { "id": "ultrathink", "label": "Ultrathink" }
+                ],
+                "promptInjectedValues": ["ultrathink"]
+              },
+              { "id": "fastMode", "label": "Fast Mode", "type": "boolean" },
+              {
+                "id": "contextWindow",
+                "label": "Context Window",
+                "type": "select",
+                "options": [
+                  { "id": "200k", "label": "200k" },
+                  { "id": "1m", "label": "1M", "isDefault": true }
+                ]
+              }
+            ]
+          },
+          "adapter": {
+            "claudeCode": {
+              "effortMap": { "ultracode": "xhigh", "ultrathink": null },
+              "modelSuffixes": { "contextWindow": { "1m": "[1m]" } },
+              "contextWindowTokens": { "200k": 200000, "1m": 1000000 }
+            }
+          }
+        },
         "opus-5": {
           "capabilities": {
             "optionDescriptors": [
@@ -553,6 +595,15 @@
         }
       },
       "models": [
+        {
+          "slug": "claude-opus-5-5",
+          "name": "Claude Opus 5.5",
+          "aliases": ["opus-5.5", "claude-opus-5.5"],
+          "status": "current",
+          "badge": "new",
+          "profile": "opus-5-5",
+          "adapter": { "claudeCode": { "minVersion": "2.1.280" } }
+        },
         {
           "slug": "claude-fable-5-1",
           "name": "Claude Fable 5.1",