From 4e444429ba9cdb58004a2314710900c57842e0b9 Mon Sep 17 00:00:00 2001
From: Sarah Wooders <sarahwooders@gmail.com>
Date: Wed, 25 Feb 2026 11:07:10 -0800
Subject: [PATCH] fix(models): recommend GPT-5.3 Codex over GPT-5.2 (#1132)

---
 src/models.json                        | 69 +++++++++++++++++++++++++-
 src/tests/model-tier-selection.test.ts | 18 +++++++
 2 files changed, 85 insertions(+), 2 deletions(-)

diff --git a/src/models.json b/src/models.json
index c72efe4..6a6928b 100644
--- a/src/models.json
+++ b/src/models.json
@@ -226,7 +226,7 @@
     "id": "gpt-5.3-codex-plus-pro-high",
     "handle": "chatgpt-plus-pro/gpt-5.3-codex",
     "label": "GPT-5.3 Codex",
-    "description": "GPT-5.3 Codex (high reasoning) via ChatGPT Plus/Pro",
+    "description": "OpenAI's best coding model (high reasoning)",
     "isFeatured": true,
     "updateArgs": {
       "reasoning_effort": "high",
@@ -410,7 +410,6 @@
     "handle": "openai/gpt-5.2",
     "label": "GPT-5.2",
     "description": "Latest general-purpose GPT (med reasoning)",
-    "isFeatured": true,
     "updateArgs": {
       "reasoning_effort": "medium",
       "verbosity": "medium",
@@ -445,6 +444,72 @@
       "parallel_tool_calls": true
     }
   },
+  {
+    "id": "gpt-5.3-codex-none",
+    "handle": "openai/gpt-5.3-codex",
+    "label": "GPT-5.3-Codex",
+    "description": "GPT-5.3 variant (no reasoning) optimized for coding",
+    "updateArgs": {
+      "reasoning_effort": "none",
+      "verbosity": "low",
+      "context_window": 272000,
+      "max_output_tokens": 128000,
+      "parallel_tool_calls": true
+    }
+  },
+  {
+    "id": "gpt-5.3-codex-low",
+    "handle": "openai/gpt-5.3-codex",
+    "label": "GPT-5.3-Codex",
+    "description": "GPT-5.3 variant (low reasoning) optimized for coding",
+    "updateArgs": {
+      "reasoning_effort": "low",
+      "verbosity": "low",
+      "context_window": 272000,
+      "max_output_tokens": 128000,
+      "parallel_tool_calls": true
+    }
+  },
+  {
+    "id": "gpt-5.3-codex-medium",
+    "handle": "openai/gpt-5.3-codex",
+    "label": "GPT-5.3-Codex",
+    "description": "GPT-5.3 variant (med reasoning) optimized for coding",
+    "updateArgs": {
+      "reasoning_effort": "medium",
+      "verbosity": "low",
+      "context_window": 272000,
+      "max_output_tokens": 128000,
+      "parallel_tool_calls": true
+    }
+  },
+  {
+    "id": "gpt-5.3-codex-high",
+    "handle": "openai/gpt-5.3-codex",
+    "label": "GPT-5.3-Codex",
+    "description": "OpenAI's best coding model (high reasoning)",
+    "isFeatured": true,
+    "updateArgs": {
+      "reasoning_effort": "high",
+      "verbosity": "low",
+      "context_window": 272000,
+      "max_output_tokens": 128000,
+      "parallel_tool_calls": true
+    }
+  },
+  {
+    "id": "gpt-5.3-codex-xhigh",
+    "handle": "openai/gpt-5.3-codex",
+    "label": "GPT-5.3-Codex",
+    "description": "GPT-5.3 variant (max reasoning) optimized for coding",
+    "updateArgs": {
+      "reasoning_effort": "xhigh",
+      "verbosity": "low",
+      "context_window": 272000,
+      "max_output_tokens": 128000,
+      "parallel_tool_calls": true
+    }
+  },
   {
     "id": "gpt-5.2-codex-none",
     "handle": "openai/gpt-5.2-codex",
diff --git a/src/tests/model-tier-selection.test.ts b/src/tests/model-tier-selection.test.ts
index 0312936..4e0a906 100644
--- a/src/tests/model-tier-selection.test.ts
+++ b/src/tests/model-tier-selection.test.ts
@@ -48,6 +48,24 @@ describe("getReasoningTierOptionsForHandle", () => {
     ]);
   });
 
+  test("returns ordered reasoning options for gpt-5.3-codex", () => {
+    const options = getReasoningTierOptionsForHandle("openai/gpt-5.3-codex");
+    expect(options.map((option) => option.effort)).toEqual([
+      "none",
+      "low",
+      "medium",
+      "high",
+      "xhigh",
+    ]);
+    expect(options.map((option) => option.modelId)).toEqual([
+      "gpt-5.3-codex-none",
+      "gpt-5.3-codex-low",
+      "gpt-5.3-codex-medium",
+      "gpt-5.3-codex-high",
+      "gpt-5.3-codex-xhigh",
+    ]);
+  });
+
   test("returns byok reasoning options for chatgpt-plus-pro gpt-5.3-codex", () => {
     const options = getReasoningTierOptionsForHandle(
       "chatgpt-plus-pro/gpt-5.3-codex",