diff --git a/src/AnthropicClient/Models/AnthropicModels.cs b/src/AnthropicClient/Models/AnthropicModels.cs
index 8fb437b..b09ee2f 100644
--- a/src/AnthropicClient/Models/AnthropicModels.cs
+++ b/src/AnthropicClient/Models/AnthropicModels.cs
@@ -6,24 +6,84 @@ namespace AnthropicClient.Models;
 public static class AnthropicModels
 {
   /// <summary>
-  /// The Claude-3 Opus model.
+  /// The Claude 3 Opus model.
   /// </summary>
   public const string Claude3Opus = "claude-3-opus-20240229";
 
   /// <summary>
-  /// The Claude-3 Sonnet model.
+  /// The Claude 3 Opus model.
+  /// </summary>
+  public const string Claude3Opus20241022 = "claude-3-opus-20240229";
+
+  /// <summary>
+  /// The Claude 3 Opus model.
+  /// </summary>
+  public const string Claude3OpusLatest = "claude-3-opus-latest";
+
+  /// <summary>
+  /// The Claude 3 Sonnet model.
   /// </summary>
   public const string Claude3Sonnet = "claude-3-sonnet-20240229";
 
   /// <summary>
-  /// The Claude-3.5 Sonnet model.
+  /// The Claude 3 Sonnet model.
+  /// </summary>
+  public const string Claude3Sonnet20240229 = "claude-3-sonnet-20240229";
+
+  /// <summary>
+  /// The Claude 3.5 Sonnet model.
   /// </summary>
   public const string Claude35Sonnet = "claude-3-5-sonnet-20240620";
 
   /// <summary>
-  /// The Claude-3 Haiku model.
+  /// The Claude 3.5 Sonnet model.
+  /// </summary>
+  public const string Claude35Sonnet20240620 = "claude-3-5-sonnet-20240620";
+
+  /// <summary>
+  /// The Claude 3.5 Sonnet model.
+  /// </summary>
+  public const string Claude35Sonnet20241022 = "claude-3-5-sonnet-20241022";
+
+  /// <summary>
+  /// The Claude 3.5 Sonnet model.
+  /// </summary>
+  public const string Claude35SonnetLatest = "claude-3-5-sonnet-latest";
+
+  /// <summary>
+  /// The Claude 3 Haiku model.
   /// </summary>
   public const string Claude3Haiku = "claude-3-haiku-20240307";
 
-  internal static bool IsValidModel(string modelId) => modelId is Claude3Opus or Claude3Sonnet or Claude35Sonnet or Claude3Haiku;
+  /// <summary>
+  /// The Claude 3 Haiku model.
+  /// </summary>
+  public const string Claude3Haiku20240307 = "claude-3-haiku-20240307";
+
+  /// <summary>
+  /// The Claude 3.5 Haiku model.
+  /// </summary>
+  public const string Claude35Haiku20241022 = "claude-3-5-haiku-20241022";
+
+  /// <summary>
+  /// The Claude 3.5 Haiku model.
+  /// </summary>
+  public const string Claude35HaikuLatest = "claude-3-5-haiku-latest";
+
+  internal static bool IsValidModel(string modelId) => modelId is 
+    Claude3Opus or 
+    Claude3Opus20241022 or
+    Claude3OpusLatest or
+    
+    Claude3Sonnet or 
+    Claude3Sonnet20240229 or
+    Claude35Sonnet or 
+    Claude35Sonnet20240620 or
+    Claude35Sonnet20241022 or
+    Claude35SonnetLatest or
+    
+    Claude3Haiku or
+    Claude3Haiku20240307 or
+    Claude35Haiku20241022 or
+    Claude35HaikuLatest;
 }
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