diff --git a/models/google/gemini-3.1-flash-lite.yaml b/models/google/gemini-3.1-flash-lite.yaml
index 318a8a9..c067710 100644
--- a/models/google/gemini-3.1-flash-lite.yaml
+++ b/models/google/gemini-3.1-flash-lite.yaml
@@ -47,8 +47,8 @@ params:
   - path: generationConfig.thinkingConfig.thinkingLevel
     type: enum
     label: Thinking level
-    description: Controls Gemini 3.1 Flash-Lite reasoning effort.
-    default: minimal
+    description: Controls Gemini 3.5 Flash reasoning effort.
+    default: medium
     values:
       - minimal
       - low
diff --git a/packages/modelparams/src/generated/data.ts b/packages/modelparams/src/generated/data.ts
index 21b9c99..8846648 100644
--- a/packages/modelparams/src/generated/data.ts
+++ b/packages/modelparams/src/generated/data.ts
@@ -7185,10 +7185,10 @@ export const CATALOG = [
       {
         "path": "generationConfig.thinkingConfig.thinkingLevel",
         "label": "Thinking level",
-        "description": "Controls Gemini 3.1 Flash-Lite reasoning effort.",
+        "description": "Controls Gemini 3.5 Flash reasoning effort.",
         "group": "reasoning",
         "type": "enum",
-        "default": "minimal",
+        "default": "medium",
         "values": [
           "minimal",
           "low",
diff --git a/packages/modelparams/src/generated/defaults.ts b/packages/modelparams/src/generated/defaults.ts
index cbd36bb..a1167de 100644
--- a/packages/modelparams/src/generated/defaults.ts
+++ b/packages/modelparams/src/generated/defaults.ts
@@ -517,7 +517,7 @@ export const DEFAULTS = {
     "generationConfig.temperature": 1,
     "generationConfig.topP": 0.95,
     "generationConfig.topK": 64,
-    "generationConfig.thinkingConfig.thinkingLevel": "minimal",
+    "generationConfig.thinkingConfig.thinkingLevel": "medium",
     "generationConfig.thinkingConfig.includeThoughts": false,
     "generationConfig.responseMimeType": "text/plain",
   },