diff --git a/index.php b/index.php
new file mode 100644
index 0000000..ac88f5a
--- /dev/null
+++ b/index.php
@@ -0,0 +1,29 @@
+<?php
+// Include the configuration file
+require_once 'config.php';
+?>
+<!DOCTYPE html>
+<html lang="de">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>ChatGPT Assistent</title>
+    <link rel="stylesheet" href="styles.css">
+</head>
+<body>
+    <div class="chat-container">
+        <h1>ChatGPT Assistent</h1>
+        <div id="chat-messages"></div>
+        <form id="chat-form">
+            <input type="text" id="user-input" placeholder="Geben Sie Ihre Nachricht ein..." required>
+            <button type="submit">Senden</button>
+        </form>
+    </div>
+    <script>
+        // Pass PHP variables to JavaScript
+        const OPENAI_API_KEY = "<?php echo $openai_api_key; ?>";
+        const ASSISTANT_ID = "<?php echo $assistant_id; ?>";
+    </script>
+    <script src="script.js"></script>
+</body>
+</html>
\ No newline at end of file
diff --git a/script.js b/script.js
index d422a36..4f5675a 100644
--- a/script.js
+++ b/script.js
@@ -3,6 +3,8 @@ document.addEventListener('DOMContentLoaded', () => {
     const userInput = document.getElementById('user-input');
     const chatMessages = document.getElementById('chat-messages');
 
+    let threadId; // Variable to store the thread ID
+
     chatForm.addEventListener('submit', async (e) => {
         e.preventDefault();
         const message = userInput.value.trim();
@@ -11,31 +13,82 @@ document.addEventListener('DOMContentLoaded', () => {
             userInput.value = '';
 
             try {
-                const response = await fetch('api.php', {
-                    method: 'POST',
-                    headers: {
-                        'Content-Type': 'application/json',
-                    },
-                    body: JSON.stringify({ message: message }),
-                });
-
-                if (response.ok) {
-                    const data = await response.json();
-                    addMessage('Assistant', data.response);
+                if (!threadId) {
+                    // Create a new thread
+                    threadId = await createThread(message);
                 } else {
-                    throw new Error('Fehler bei der API-Anfrage');
+                    // Post a message to the existing thread
+                    await postMessageToThread(threadId, message);
                 }
             } catch (error) {
-                console.error('Fehler:', error);
+                console.error('Error:', error);
                 addMessage('System', 'Es ist ein Fehler aufgetreten. Bitte versuchen Sie es später erneut.');
             }
         }
     });
 
+    async function createThread(message) {
+        try {
+            const response = await fetch('https://api.openai.com/v1/threads', {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                    'Authorization': `Bearer ${OPENAI_API_KEY}`
+                },
+                body: JSON.stringify({
+                    "messages": [
+                        {
+                            "role": "user",
+                            "content": message
+                        }
+                    ]
+                })
+            });
+
+            if (response.ok) {
+                const data = await response.json();
+                addMessage('Assistant', data.choices[0].message.content);
+                return data.id;
+            } else {
+                throw new Error('Fehler bei der Erstellung des Threads');
+            }
+        } catch (error) {
+            throw error;
+        }
+    }
+    async function postMessageToThread(threadId, message) {
+        try {
+            const response = await fetch(`https://api.openai.com/v1/threads/${threadId}/messages`, {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                    'Authorization': `Bearer ${OPENAI_API_KEY}`
+                },
+                body: JSON.stringify({
+                    "messages": [
+                        {
+                            "role": "user",
+                            "content": message
+                        }
+                    ]
+                })
+            });
+
+            if (response.ok) {
+                const data = await response.json();
+                addMessage('Assistant', data.choices[0].message.content);
+            } else {
+                throw new Error('Fehler beim Posten der Nachricht');
+            }
+        } catch (error) {
+            throw error;
+        }
+    }
+
     function addMessage(sender, message) {
         const messageElement = document.createElement('div');
         messageElement.innerHTML = `<strong>${sender}:</strong> ${message}`;
         chatMessages.appendChild(messageElement);
         chatMessages.scrollTop = chatMessages.scrollHeight;
     }
-});
\ No newline at end of file
+});
