diff --git a/web/src/components/playground/configStorage.js b/web/src/components/playground/configStorage.js
index 273d39f9..d201ed6a 100644
--- a/web/src/components/playground/configStorage.js
+++ b/web/src/components/playground/configStorage.js
@@ -21,7 +21,6 @@ import {
   STORAGE_KEYS,
   DEFAULT_CONFIG,
 } from '../../constants/playground.constants';
-import { sanitizePlaygroundInputs } from '../../helpers/playgroundMaxTokens';
 
 const MESSAGES_STORAGE_KEY = 'playground_messages';
 
@@ -66,12 +65,16 @@ export const loadConfig = () => {
     const savedConfig = localStorage.getItem(STORAGE_KEYS.CONFIG);
     if (savedConfig) {
       const parsedConfig = JSON.parse(savedConfig);
+      const parsedMaxTokens = parseInt(parsedConfig?.inputs?.max_tokens, 10);
 
       const mergedConfig = {
-        inputs: sanitizePlaygroundInputs({
+        inputs: {
           ...DEFAULT_CONFIG.inputs,
           ...parsedConfig.inputs,
-        }),
+          max_tokens: Number.isNaN(parsedMaxTokens)
+            ? parsedConfig?.inputs?.max_tokens
+            : parsedMaxTokens,
+        },
         parameterEnabled: {
           ...DEFAULT_CONFIG.parameterEnabled,
           ...parsedConfig.parameterEnabled,
diff --git a/web/src/helpers/index.js b/web/src/helpers/index.js
index 1c959d8d..a86c3bca 100644
--- a/web/src/helpers/index.js
+++ b/web/src/helpers/index.js
@@ -30,4 +30,3 @@ export * from './boolean';
 export * from './dashboard';
 export * from './passkey';
 export * from './statusCodeRules';
-export * from './playgroundMaxTokens';
diff --git a/web/src/helpers/playgroundMaxTokens.js b/web/src/helpers/playgroundMaxTokens.js
deleted file mode 100644
index 19d5f2c4..00000000
--- a/web/src/helpers/playgroundMaxTokens.js
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
-Copyright (C) 2025 QuantumNous
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU Affero General Public License as
-published by the Free Software Foundation, either version 3 of the
-License, or (at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU Affero General Public License for more details.
-
-You should have received a copy of the GNU Affero General Public License
-along with this program. If not, see <https://www.gnu.org/licenses/>.
-
-For commercial licensing, please contact support@quantumnous.com
-*/
-
-export const normalizeMaxTokensValue = (value) => {
-  if (typeof value === 'number') {
-    return Number.isFinite(value) && value >= 0 ? Math.floor(value) : null;
-  }
-
-  if (typeof value === 'string') {
-    const trimmed = value.trim();
-    if (trimmed === '') {
-      return null;
-    }
-
-    const parsed = Number(trimmed);
-    return Number.isFinite(parsed) && parsed >= 0 ? Math.floor(parsed) : null;
-  }
-
-  return null;
-};
-
-export const normalizePlaygroundInputValue = (name, value) => {
-  if (name === 'max_tokens') {
-    return normalizeMaxTokensValue(value);
-  }
-
-  return value;
-};
-
-export const sanitizePlaygroundInputs = (inputs) => {
-  if (!inputs) {
-    return inputs;
-  }
-
-  return {
-    ...inputs,
-    max_tokens: normalizeMaxTokensValue(inputs.max_tokens),
-  };
-};
diff --git a/web/src/helpers/playgroundMaxTokens.test.mjs b/web/src/helpers/playgroundMaxTokens.test.mjs
deleted file mode 100644
index 3503ca9a..00000000
--- a/web/src/helpers/playgroundMaxTokens.test.mjs
+++ /dev/null
@@ -1,43 +0,0 @@
-import assert from 'node:assert/strict';
-
-import {
-  normalizeMaxTokensValue,
-  normalizePlaygroundInputValue,
-  sanitizePlaygroundInputs,
-} from './playgroundMaxTokens.js';
-
-assert.equal(normalizeMaxTokensValue(8192), 8192);
-assert.equal(normalizeMaxTokensValue('8192'), 8192);
-assert.equal(normalizeMaxTokensValue(' 8192 '), 8192);
-assert.equal(normalizeMaxTokensValue(''), null);
-assert.equal(normalizeMaxTokensValue('abc'), null);
-assert.equal(normalizeMaxTokensValue(-1), null);
-assert.equal(normalizeMaxTokensValue(1.9), 1);
-
-assert.equal(normalizePlaygroundInputValue('max_tokens', '2048'), 2048);
-assert.equal(normalizePlaygroundInputValue('max_tokens', 'bad'), null);
-assert.equal(normalizePlaygroundInputValue('seed', 'bad'), 'bad');
-
-assert.deepEqual(
-  sanitizePlaygroundInputs({
-    model: 'gpt-4o',
-    max_tokens: '2048',
-  }),
-  {
-    model: 'gpt-4o',
-    max_tokens: 2048,
-  },
-);
-
-assert.deepEqual(
-  sanitizePlaygroundInputs({
-    model: 'gpt-4o',
-    max_tokens: 'bad',
-  }),
-  {
-    model: 'gpt-4o',
-    max_tokens: null,
-  },
-);
-
-console.log('playground max_tokens tests passed');
diff --git a/web/src/hooks/playground/usePlaygroundState.js b/web/src/hooks/playground/usePlaygroundState.js
index 9818db91..130df90d 100644
--- a/web/src/hooks/playground/usePlaygroundState.js
+++ b/web/src/hooks/playground/usePlaygroundState.js
@@ -32,11 +32,7 @@ import {
   loadMessages,
   saveMessages,
 } from '../../components/playground/configStorage';
-import {
-  processIncompleteThinkTags,
-  normalizePlaygroundInputValue,
-  sanitizePlaygroundInputs,
-} from '../../helpers';
+import { processIncompleteThinkTags } from '../../helpers';
 
 export const usePlaygroundState = () => {
   const { t } = useTranslation();
@@ -125,10 +121,7 @@ export const usePlaygroundState = () => {
 
   // 配置更新函数
   const handleInputChange = useCallback((name, value) => {
-    setInputs((prev) => ({
-      ...prev,
-      [name]: normalizePlaygroundInputValue(name, value),
-    }));
+    setInputs((prev) => ({ ...prev, [name]: value }));
   }, []);
 
   const handleParameterToggle = useCallback((paramName) => {
@@ -174,9 +167,14 @@ export const usePlaygroundState = () => {
   // 配置导入/重置
   const handleConfigImport = useCallback((importedConfig) => {
     if (importedConfig.inputs) {
-      setInputs((prev) =>
-        sanitizePlaygroundInputs({ ...prev, ...importedConfig.inputs }),
-      );
+      const parsedMaxTokens = parseInt(importedConfig.inputs.max_tokens, 10);
+      setInputs((prev) => ({
+        ...prev,
+        ...importedConfig.inputs,
+        max_tokens: Number.isNaN(parsedMaxTokens)
+          ? importedConfig.inputs.max_tokens
+          : parsedMaxTokens,
+      }));
     }
     if (importedConfig.parameterEnabled) {
       setParameterEnabled((prev) => ({