From 9531874100372ac46f5ab444fa2915b1b65cc4a3 Mon Sep 17 00:00:00 2001
From: Kevin Lin <klin5061@gmail.com>
Date: Tue, 24 Feb 2026 15:36:19 -0800
Subject: [PATCH] feat: add openai/gpt-5.3-codex model tiers (#1124)

Co-authored-by: Letta <noreply@letta.com>
---
 src/models.json | 65 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)

diff --git a/src/models.json b/src/models.json
index 0d2a135..22befc2 100644
--- a/src/models.json
+++ b/src/models.json
@@ -510,6 +510,71 @@
       "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": "medium",
+      "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": "medium",
+      "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": "medium",
+      "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": "GPT-5.3 variant (high reasoning) optimized for coding",
+    "updateArgs": {
+      "reasoning_effort": "high",
+      "verbosity": "medium",
+      "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": "medium",
+      "context_window": 272000,
+      "max_output_tokens": 128000,
+      "parallel_tool_calls": true
+    }
+  },
   {
     "id": "gpt-5.1-none",
     "handle": "openai/gpt-5.1",