diff --git a/dist/index.js b/dist/index.js
index 243aa9c186c2b647bfd307984e3a8ad8d2f00086..14406ffff6acb8a3d38eb338d20da069eee1875a 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -303,7 +303,11 @@ var deepseekLanguageModelOptions = import_v42.z.object({
    */
   thinking: import_v42.z.object({
     type: import_v42.z.enum(["enabled", "disabled"]).optional()
-  }).optional()
+  }).optional(),
+  /**
+   * Reasoning effort for DeepSeek V4+ models. Accepts `"high"` or `"max"`.
+   */
+  reasoning_effort: import_v42.z.enum(["high", "max"]).optional()
 });
 
 // src/chat/deepseek-prepare-tools.ts
@@ -470,7 +474,8 @@ var DeepSeekChatLanguageModel = class {
         messages,
         tools: deepseekTools,
         tool_choice: deepseekToolChoices,
-        thinking: ((_b = deepseekOptions.thinking) == null ? void 0 : _b.type) != null ? { type: deepseekOptions.thinking.type } : void 0
+        thinking: ((_b = deepseekOptions.thinking) == null ? void 0 : _b.type) != null ? { type: deepseekOptions.thinking.type } : void 0,
+        reasoning_effort: deepseekOptions.reasoning_effort
       },
       warnings: [...warnings, ...toolWarnings]
     };
diff --git a/dist/index.mjs b/dist/index.mjs
index 6a2d2d14739e3b50faa398ff94092bd5b0ea874d..947eb026b4eecd256c1009be364b35aaa3c2e628 100644
--- a/dist/index.mjs
+++ b/dist/index.mjs
@@ -292,7 +292,11 @@ var deepseekLanguageModelOptions = z2.object({
    */
   thinking: z2.object({
     type: z2.enum(["enabled", "disabled"]).optional()
-  }).optional()
+  }).optional(),
+  /**
+   * Reasoning effort for DeepSeek V4+ models. Accepts `"high"` or `"max"`.
+   */
+  reasoning_effort: z2.enum(["high", "max"]).optional()
 });
 
 // src/chat/deepseek-prepare-tools.ts
@@ -459,7 +463,8 @@ var DeepSeekChatLanguageModel = class {
         messages,
         tools: deepseekTools,
         tool_choice: deepseekToolChoices,
-        thinking: ((_b = deepseekOptions.thinking) == null ? void 0 : _b.type) != null ? { type: deepseekOptions.thinking.type } : void 0
+        thinking: ((_b = deepseekOptions.thinking) == null ? void 0 : _b.type) != null ? { type: deepseekOptions.thinking.type } : void 0,
+        reasoning_effort: deepseekOptions.reasoning_effort
       },
       warnings: [...warnings, ...toolWarnings]
     };