diff --git a/EasyOpenAiTools.Library/OpenAi/OpenAiModelType.cs b/EasyOpenAiTools.Library/OpenAi/OpenAiModelType.cs
index ebb52ff..acc6d40 100644
--- a/EasyOpenAiTools.Library/OpenAi/OpenAiModelType.cs
+++ b/EasyOpenAiTools.Library/OpenAi/OpenAiModelType.cs
@@ -6,14 +6,25 @@
     public class OpenAiModelType
     {
         /// <summary>
-        /// Gets the GPT-4 model type.
+        /// Gets the GPT-4o model type. The most advanced, multimodal flagship model that’s cheaper and faster than GPT-4 Turbo
         /// </summary>
-        public static OpenAiModelType Gpt4 => new OpenAiModelType("gpt-4o");
+        public static OpenAiModelType Gpt4o => new OpenAiModelType("gpt-4o");
 
         /// <summary>
-        /// Gets the GPT-3.5 model type (Turbo variant).
+        /// Gets the latest GPT-4 Turbo model type
         /// </summary>
-        public static OpenAiModelType Gpt35 => new OpenAiModelType("gpt-3.5-turbo-0125");
+        public static OpenAiModelType Gpt4Turbo => new OpenAiModelType("gpt-4-turbo");
+
+        /// <summary>
+        /// Gets the latest GPT-4 model type
+        /// </summary>
+        public static OpenAiModelType Gpt4 => new OpenAiModelType("gpt-4");
+
+        /// <summary>
+        /// Gets the GPT-3.5 model type (Turbo variant). The latest GPT-3.5 Turbo model with higher accuracy at 
+        /// responding in requested formats. Returns a maximum of 4,096 output tokens
+        /// </summary>
+        public static OpenAiModelType Gpt35 => new OpenAiModelType("gpt-3.5-turbo");
 
         internal string Name { get; init; }
 
diff --git a/EasyOpenAiTools.Samples/Program.cs b/EasyOpenAiTools.Samples/Program.cs
index d172da2..45d8110 100644
--- a/EasyOpenAiTools.Samples/Program.cs
+++ b/EasyOpenAiTools.Samples/Program.cs
@@ -19,7 +19,7 @@ static void Main(string[] args)
             var logger = loggerFactory.CreateLogger("EasyOpenAi");
 
             var openAiApiKey = Environment.GetEnvironmentVariable("OPENAI_API_KEY");
-            var openAiModelType = OpenAiModelType.Gpt4;
+            var openAiModelType = OpenAiModelType.Gpt4o;
             var initialPrompt = """
                 Answer all questions by users in a brief and concise way.
                 """;
diff --git a/README.md b/README.md
index d35ddcd..423c89d 100644
--- a/README.md
+++ b/README.md
@@ -33,12 +33,12 @@ Make sure to check the `EasyOpenAiTools.Samples` project for a running example.
 
 To start a cjat you need to supply an OpenAiSettings Object containing the following information:
 - Your Api Key
-- The Type of Model you want to use (currently Gpt3.5 or Gpt4)
+- The Type of Model you want to use 
 - The initial prompt telling the model how to behave [check here for inspiration](https://platform.openai.com/docs/guides/prompt-engineering/tactics)
 
 ```c#
 var openAiApiKey = Environment.GetEnvironmentVariable("OPENAI_API_KEY");
-var openAiModelType = OpenAiModelType.Gpt4;
+var openAiModelType = OpenAiModelType.Gpt4o;
 var initialPrompt = "Answer all questions by users in a brief and concise way.";
 
 var openAiSettings = new OpenAiSettings(openAiApiKey, openAiModelType, initialPrompt);