diff --git a/src/main/java/ru/hackteam/window_of_knowledge/models/ChatGPTClient.java b/src/main/java/ru/hackteam/window_of_knowledge/models/ChatGPTClient.java
new file mode 100644
index 0000000..3843d78
--- /dev/null
+++ b/src/main/java/ru/hackteam/window_of_knowledge/models/ChatGPTClient.java
@@ -0,0 +1,53 @@
+package ru.hackteam.window_of_knowledge.models;
+
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import java.util.List;
+import java.util.Map;
+
+public class ChatGPTClient {
+    private static final String API_URL = "https://api.openai.com/v1/chat/completions";
+    private final String apiKey;
+
+    public ChatGPTClient() {
+        String apiKey = "API_KEY_CHATGPT";
+        apiKey = System.getenv(apiKey);
+        this.apiKey = apiKey;
+    }
+
+    public String sendMessage(String model, String prompt) throws Exception {
+        ObjectMapper mapper = new ObjectMapper();
+        String requestBody = mapper.writeValueAsString(Map.of("model", model, "messages", new Object[]{Map.of("role", "user", "content", prompt)}));
+
+        HttpRequest request = HttpRequest.newBuilder().uri(URI.create(API_URL)).header("Content-Type", "application/json").header("Authorization", "Bearer " + apiKey).POST(HttpRequest.BodyPublishers.ofString(requestBody)).build();
+
+        HttpClient client = HttpClient.newHttpClient();
+        HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
+
+        if (response.statusCode() == 200) {
+            Map<String, Object> responseMap = mapper.readValue(response.body(), Map.class);
+            Map<String, Object> choice = (Map<String, Object>) ((List<Object>) responseMap.get("choices")).get(0);
+            Map<String, Object> message = (Map<String, Object>) choice.get("message");
+            return (String) message.get("content");
+        } else {
+            throw new RuntimeException("API Error: " + response.body());
+        }
+    }
+
+    public static void main(String[] args) {
+        // образец использования
+        ChatGPTClient client = new ChatGPTClient();
+        try {
+            String response = client.sendMessage("gpt-4", "как дела?");
+            System.out.println(response);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}
+