diff --git a/oh-my-opencode.jsonc b/oh-my-opencode.jsonc
index ac913dd..918ca01 100644
--- a/oh-my-opencode.jsonc
+++ b/oh-my-opencode.jsonc
@@ -2,20 +2,20 @@
   "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-opencode/master/assets/oh-my-opencode.schema.json",
   "agents": {
     "sisyphus": { "model": "anthropic/claude-opus-4-6", "variant": "high" },
-    "hephaestus": { "model": "openai/gpt-5.3-codex", "variant": "medium" },
-    "oracle": { "model": "openai/gpt-5.2", "variant": "high" },
+    "hephaestus": { "model": "openai/gpt-5.4", "variant": "medium" },
+    "oracle": { "model": "openai/gpt-5.4", "variant": "high" },
     "librarian": { "model": "litellm/glm-4.7" },
     "explore": { "model": "litellm/minimax-m2.5" },
-    "multimodal-looker": { "model": "openai/gpt-5.3-codex", "variant": "medium" },
+    "multimodal-looker": { "model": "openai/gpt-5.4", "variant": "medium" },
     "prometheus": { "model": "anthropic/claude-opus-4-6", "variant": "high" },
     "metis": { "model": "anthropic/claude-opus-4-6", "variant": "high" },
-    "momus": { "model": "openai/gpt-5.2", "variant": "medium" },
+    "momus": { "model": "openai/gpt-5.4", "variant": "medium" },
     "atlas": { "model": "litellm/kimi-k2.5" }
   },
   "categories": {
     "visual-engineering": { "model": "google/gemini-3.1-pro-preview", "variant": "high" },
-    "ultrabrain": { "model": "openai/gpt-5.3-codex", "variant": "xhigh" },
-    "deep": { "model": "openai/gpt-5.3-codex", "variant": "medium" },
+    "ultrabrain": { "model": "openai/gpt-5.4", "variant": "xhigh" },
+    "deep": { "model": "openai/gpt-5.4", "variant": "medium" },
     "artistry": { "model": "google/gemini-3.1-pro-preview", "variant": "high" },
     "quick": { "model": "anthropic/claude-haiku-4-5" },
     "unspecified-low": { "model": "anthropic/claude-sonnet-4-6" },
diff --git a/opencode.jsonc b/opencode.jsonc
index 48b4deb..63968e0 100644
--- a/opencode.jsonc
+++ b/opencode.jsonc
@@ -43,6 +43,12 @@
         "apiKey": "{env:LITELLM_API_KEY}"
       },
       "models": {
+        "gpt-5.4": {
+          "name": "GPT-5.4",
+          "reasoning": true,
+          "modalities": { "input": ["text", "image"], "output": ["text"] },
+          "limit": { "context": 1050000, "input": 272000, "output": 128000 }
+        },
         "gpt-5.2": {
           "name": "GPT-5.2",
           "reasoning": true,