diff --git a/dot_codex/private_config.toml b/dot_codex/private_config.toml
index 8acdb738..4c2e0749 100644
--- a/dot_codex/private_config.toml
+++ b/dot_codex/private_config.toml
@@ -1,4 +1,4 @@
-model = "gpt-5.3-codex"
+model = "gpt-5.4"
 model_reasoning_effort = "high"
 approval_policy = "on-request"
 personality = "pragmatic"
diff --git a/dot_pi/agent/modes.json b/dot_pi/agent/modes.json
index dd45fc29..ac3e0ce2 100644
--- a/dot_pi/agent/modes.json
+++ b/dot_pi/agent/modes.json
@@ -10,11 +10,11 @@
     "fast": {
       "provider": "anthropic",
       "modelId": "claude-sonnet-4-6",
-      "thinkingLevel": "medium"
+      "thinkingLevel": "low"
     },
     "deep": {
       "provider": "openai-codex",
-      "modelId": "gpt-5.3-codex",
+      "modelId": "gpt-5.4",
       "thinkingLevel": "high"
     }
   }
diff --git a/dot_pi/agent/settings.json b/dot_pi/agent/settings.json
index e55a18a3..b9a51593 100644
--- a/dot_pi/agent/settings.json
+++ b/dot_pi/agent/settings.json
@@ -1,16 +1,17 @@
 {
-  "lastChangelogVersion": "0.56.1",
+  "lastChangelogVersion": "0.56.2",
   "hideThinkingBlock": true,
   "collapseChangelog": false,
   "defaultThinkingLevel": "high",
   "theme": "tokyo-night",
-  "defaultProvider": "anthropic",
-  "defaultModel": "claude-opus-4-6",
+  "defaultProvider": "openai-codex",
+  "defaultModel": "gpt-5.4",
   "doubleEscapeAction": "tree",
   "enabledModels": [
     "openai-codex/gpt-5.3-codex",
     "anthropic/claude-opus-4-6",
-    "anthropic/claude-sonnet-4-6"
+    "anthropic/claude-sonnet-4-6",
+    "openai-codex/gpt-5.4"
   ],
   "showHardwareCursor": true,
   "quietStartup": true,