From 5a699439856299a20b5e13708b798c64259ee2c5 Mon Sep 17 00:00:00 2001
From: Kevin Lin <klin5061@gmail.com>
Date: Thu, 5 Mar 2026 11:34:15 -0800
Subject: [PATCH] feat: add GPT-5.4 model support (#1275)

Co-authored-by: Letta Code <noreply@letta.com>
---
 src/models.json | 66 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)

diff --git a/src/models.json b/src/models.json
index 6380194..88a325b 100644
--- a/src/models.json
+++ b/src/models.json
@@ -591,6 +591,72 @@
       "parallel_tool_calls": true
     }
   },
+  {
+    "id": "gpt-5.4-none",
+    "handle": "openai/gpt-5.4",
+    "label": "GPT-5.4",
+    "description": "OpenAI's most capable model (no reasoning)",
+    "updateArgs": {
+      "reasoning_effort": "none",
+      "verbosity": "medium",
+      "context_window": 1050000,
+      "max_output_tokens": 128000,
+      "parallel_tool_calls": true
+    }
+  },
+  {
+    "id": "gpt-5.4-low",
+    "handle": "openai/gpt-5.4",
+    "label": "GPT-5.4",
+    "description": "OpenAI's most capable model (low reasoning)",
+    "updateArgs": {
+      "reasoning_effort": "low",
+      "verbosity": "medium",
+      "context_window": 1050000,
+      "max_output_tokens": 128000,
+      "parallel_tool_calls": true
+    }
+  },
+  {
+    "id": "gpt-5.4-medium",
+    "handle": "openai/gpt-5.4",
+    "label": "GPT-5.4",
+    "description": "OpenAI's most capable model (med reasoning)",
+    "updateArgs": {
+      "reasoning_effort": "medium",
+      "verbosity": "medium",
+      "context_window": 1050000,
+      "max_output_tokens": 128000,
+      "parallel_tool_calls": true
+    }
+  },
+  {
+    "id": "gpt-5.4-high",
+    "handle": "openai/gpt-5.4",
+    "label": "GPT-5.4",
+    "description": "OpenAI's most capable model (high reasoning)",
+    "isFeatured": true,
+    "updateArgs": {
+      "reasoning_effort": "high",
+      "verbosity": "medium",
+      "context_window": 1050000,
+      "max_output_tokens": 128000,
+      "parallel_tool_calls": true
+    }
+  },
+  {
+    "id": "gpt-5.4-xhigh",
+    "handle": "openai/gpt-5.4",
+    "label": "GPT-5.4",
+    "description": "OpenAI's most capable model (max reasoning)",
+    "updateArgs": {
+      "reasoning_effort": "xhigh",
+      "verbosity": "medium",
+      "context_window": 1050000,
+      "max_output_tokens": 128000,
+      "parallel_tool_calls": true
+    }
+  },
   {
     "id": "gpt-5.3-codex-none",
     "handle": "openai/gpt-5.3-codex",