diff --git a/src/models.json b/src/models.json
index a1090bc..7ed3690 100644
--- a/src/models.json
+++ b/src/models.json
@@ -147,18 +147,74 @@
       "parallel_tool_calls": true
     }
   },
+  {
+    "id": "opus-4.6-xhigh",
+    "handle": "anthropic/claude-opus-4-6",
+    "label": "Opus 4.6",
+    "description": "Opus 4.6 (max reasoning)",
+    "updateArgs": {
+      "context_window": 200000,
+      "max_output_tokens": 128000,
+      "reasoning_effort": "xhigh",
+      "enable_reasoner": true,
+      "parallel_tool_calls": true
+    }
+  },
   {
     "id": "opus-4.5",
     "handle": "anthropic/claude-opus-4-5-20251101",
     "label": "Opus 4.5",
-    "description": "Anthropic's (legacy) best model",
+    "description": "Anthropic's (legacy) best model (high reasoning)",
     "updateArgs": {
       "context_window": 180000,
       "max_output_tokens": 64000,
+      "reasoning_effort": "high",
+      "enable_reasoner": true,
       "max_reasoning_tokens": 31999,
       "parallel_tool_calls": true
     }
   },
+  {
+    "id": "opus-4.5-no-reasoning",
+    "handle": "anthropic/claude-opus-4-5-20251101",
+    "label": "Opus 4.5",
+    "description": "Opus 4.5 with no reasoning (faster)",
+    "updateArgs": {
+      "context_window": 180000,
+      "max_output_tokens": 64000,
+      "reasoning_effort": "none",
+      "enable_reasoner": false,
+      "parallel_tool_calls": true
+    }
+  },
+  {
+    "id": "opus-4.5-low",
+    "handle": "anthropic/claude-opus-4-5-20251101",
+    "label": "Opus 4.5",
+    "description": "Opus 4.5 (low reasoning)",
+    "updateArgs": {
+      "context_window": 180000,
+      "max_output_tokens": 64000,
+      "reasoning_effort": "low",
+      "enable_reasoner": true,
+      "max_reasoning_tokens": 4000,
+      "parallel_tool_calls": true
+    }
+  },
+  {
+    "id": "opus-4.5-medium",
+    "handle": "anthropic/claude-opus-4-5-20251101",
+    "label": "Opus 4.5",
+    "description": "Opus 4.5 (med reasoning)",
+    "updateArgs": {
+      "context_window": 180000,
+      "max_output_tokens": 64000,
+      "reasoning_effort": "medium",
+      "enable_reasoner": true,
+      "max_reasoning_tokens": 12000,
+      "parallel_tool_calls": true
+    }
+  },
   {
     "id": "bedrock-opus",
     "handle": "bedrock/us.anthropic.claude-opus-4-5-20251101-v1:0",
diff --git a/src/tests/model-tier-selection.test.ts b/src/tests/model-tier-selection.test.ts
index 4e0a906..1f0fd40 100644
--- a/src/tests/model-tier-selection.test.ts
+++ b/src/tests/model-tier-selection.test.ts
@@ -113,12 +113,32 @@ describe("getReasoningTierOptionsForHandle", () => {
       "low",
       "medium",
       "high",
+      "xhigh",
     ]);
     expect(options.map((option) => option.modelId)).toEqual([
       "opus-4.6-no-reasoning",
       "opus-4.6-low",
       "opus-4.6-medium",
       "opus",
+      "opus-4.6-xhigh",
+    ]);
+  });
+
+  test("returns reasoning options for anthropic opus 4.5", () => {
+    const options = getReasoningTierOptionsForHandle(
+      "anthropic/claude-opus-4-5-20251101",
+    );
+    expect(options.map((option) => option.effort)).toEqual([
+      "none",
+      "low",
+      "medium",
+      "high",
+    ]);
+    expect(options.map((option) => option.modelId)).toEqual([
+      "opus-4.5-no-reasoning",
+      "opus-4.5-low",
+      "opus-4.5-medium",
+      "opus-4.5",
     ]);
   });