diff --git a/src/main/java/com/newyetai/sdk/xf/model/ChatReq.java b/src/main/java/com/newyetai/sdk/xf/model/ChatReq.java
index 3927708..9f3eef9 100644
--- a/src/main/java/com/newyetai/sdk/xf/model/ChatReq.java
+++ b/src/main/java/com/newyetai/sdk/xf/model/ChatReq.java
@@ -23,17 +23,17 @@ public class ChatReq implements Serializable{
   @NotNull(message = "消息内容不能为空")
   private List<MessageDTO> messages;
   @Default
-  private String temperature = "0.3";
+  private Float temperature = 0.3f;
   @Default
-  private String max_tokens = "150";
+  private Integer max_tokens = 150;
+//  @Default
+//  private String repetition_penalty = "1.25";
   @Default
-  private String repetition_penalty = "1.25";
+  private Float top_p = 0.65f;
   @Default
-  private String top_p = "0.65";
+  private Float presence_penalty = -0.6f;
   @Default
-  private String presence_penalty = "-0.6";
-  @Default
-  private String frequency_penalty = "0.2";
+  private Float frequency_penalty = 0.2f;