diff --git a/src/main/java/com/unfbx/chatgpt/entity/completions/Completion.java b/src/main/java/com/unfbx/chatgpt/entity/completions/Completion.java
index b63f855..73b4995 100644
--- a/src/main/java/com/unfbx/chatgpt/entity/completions/Completion.java
+++ b/src/main/java/com/unfbx/chatgpt/entity/completions/Completion.java
@@ -121,7 +121,7 @@ public long tokens() {
     @Getter
     @AllArgsConstructor
     public enum Model {
-        DAVINCI_003("text-davinci-003"),
+        DAVINCI_003("gpt-3.5-turbo-instruct"),
         DAVINCI_002("text-davinci-002"),
         DAVINCI("davinci"),
         ;
diff --git a/src/test/java/com/unfbx/chatgpt/OpenAiClientTest.java b/src/test/java/com/unfbx/chatgpt/OpenAiClientTest.java
index 5b18ae6..c26e12f 100644
--- a/src/test/java/com/unfbx/chatgpt/OpenAiClientTest.java
+++ b/src/test/java/com/unfbx/chatgpt/OpenAiClientTest.java
@@ -248,8 +248,6 @@ public void completionsV3() {
         Completion q = Completion.builder()
                 .prompt(question)
                 .stop(Arrays.asList(" Human:", " Bot:"))
-
-                .echo(true)
                 .build();
         CompletionResponse completions = v2.completions(q);
         String text = completions.getChoices().get(0).getText();