diff --git a/internal/providers/configs/anthropic.json b/internal/providers/configs/anthropic.json
index 42ddd4bc..22cf9a1f 100644
--- a/internal/providers/configs/anthropic.json
+++ b/internal/providers/configs/anthropic.json
@@ -17,6 +17,8 @@
       "context_window": 200000,
       "default_max_tokens": 50000,
       "can_reason": true,
+      "reasoning_levels": ["low", "medium", "high", "max"],
+      "default_reasoning_efforts": "medium",
       "supports_attachments": true
     },
     {
@@ -41,6 +43,8 @@
       "context_window": 200000,
       "default_max_tokens": 126000,
       "can_reason": true,
+      "reasoning_levels": ["low", "medium", "high", "max"],
+      "default_reasoning_efforts": "medium",
       "supports_attachments": true
     },
     {