diff --git a/oh-my-openagent.claude.jsonc b/oh-my-openagent.claude.jsonc
index afa3b72..2209345 100644
--- a/oh-my-openagent.claude.jsonc
+++ b/oh-my-openagent.claude.jsonc
@@ -2,8 +2,8 @@
   "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-openagent/dev/assets/oh-my-opencode.schema.json",
   "agents": {
     "sisyphus": { "model": "anthropic/claude-opus-4-7", "variant": "max" },
-    "hephaestus": { "model": "openai/gpt-5.4", "variant": "medium" },
-    "oracle": { "model": "openai/gpt-5.4", "variant": "high" },
+    "hephaestus": { "model": "openai/gpt-5.5", "variant": "medium" },
+    "oracle": { "model": "openai/gpt-5.5", "variant": "high" },
     "librarian": { "model": "openai/gpt-5.4-mini" },
     "explore": { "model": "openai/gpt-5.4-mini" },
     "multimodal-looker": { "model": "openai/gpt-5.4", "variant": "medium" },
@@ -16,7 +16,7 @@
   "categories": {
     "visual-engineering": { "model": "google/gemini-3.1-pro-preview", "variant": "high" },
     "ultrabrain": { "model": "openai/gpt-5.4", "variant": "xhigh" },
-    "deep": { "model": "openai/gpt-5.4", "variant": "medium" },
+    "deep": { "model": "openai/gpt-5.5", "variant": "medium" },
     "artistry": { "model": "google/gemini-3.1-pro-preview", "variant": "high" },
     "quick": { "model": "openai/gpt-5.4-mini" },
     "unspecified-low": { "model": "anthropic/claude-sonnet-4-6" },
diff --git a/oh-my-openagent.gpt.jsonc b/oh-my-openagent.gpt.jsonc
index 33c7a5d..c449011 100644
--- a/oh-my-openagent.gpt.jsonc
+++ b/oh-my-openagent.gpt.jsonc
@@ -2,8 +2,8 @@
   "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-openagent/dev/assets/oh-my-opencode.schema.json",
   "agents": {
     "sisyphus": { "model": "openai/gpt-5.4", "variant": "medium" },
-    "hephaestus": { "model": "openai/gpt-5.4", "variant": "medium" },
-    "oracle": { "model": "openai/gpt-5.4", "variant": "high" },
+    "hephaestus": { "model": "openai/gpt-5.5", "variant": "medium" },
+    "oracle": { "model": "openai/gpt-5.5", "variant": "high" },
     "librarian": { "model": "openai/gpt-5.4-mini" },
     "explore": { "model": "openai/gpt-5.4-mini" },
     "multimodal-looker": { "model": "openai/gpt-5.4", "variant": "medium" },
@@ -16,7 +16,7 @@
   "categories": {
     "visual-engineering": { "model": "google/gemini-3.1-pro-preview", "variant": "high" },
     "ultrabrain": { "model": "openai/gpt-5.4", "variant": "xhigh" },
-    "deep": { "model": "openai/gpt-5.4", "variant": "medium" },
+    "deep": { "model": "openai/gpt-5.5", "variant": "medium" },
     "artistry": { "model": "google/gemini-3.1-pro-preview", "variant": "high" },
     "quick": { "model": "openai/gpt-5.4-mini" },
     "unspecified-low": { "model": "gpt-5.3-codex", "variant": "medium" },