diff --git a/src/AnthropicClient/Models/AnthropicModels.cs b/src/AnthropicClient/Models/AnthropicModels.cs
index 8fb437b..f5165d9 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;
 }
\ No newline at end of file
diff --git a/tests/AnthropicClient.Tests/Unit/Models/AnthropicModelsTests.cs b/tests/AnthropicClient.Tests/Unit/Models/AnthropicModelsTests.cs
index c28c358..396edbd 100644
--- a/tests/AnthropicClient.Tests/Unit/Models/AnthropicModelsTests.cs
+++ b/tests/AnthropicClient.Tests/Unit/Models/AnthropicModelsTests.cs
@@ -12,6 +12,26 @@ public class AnthropicModelsTests
     actual.Should().Be(expected);
   }
 
+  [Fact]
+  public void Claude3Opus20241022_WhenCalled_ItShouldReturnExpectedValue()
+  {
+    var expected = "claude-3-opus-20240229";
+
+    var actual = AnthropicModels.Claude3Opus20241022;
+
+    actual.Should().Be(expected);
+  }
+
+  [Fact]
+  public void Claude3OpusLatest_WhenCalled_ItShouldReturnExpectedValue()
+  {
+    var expected = "claude-3-opus-latest";
+
+    var actual = AnthropicModels.Claude3OpusLatest;
+
+    actual.Should().Be(expected);
+  }
+
   [Fact]
   public void Claude3Sonnet_WhenCalled_ItShouldReturnExpectedValue()
   {
@@ -22,6 +42,16 @@ public class AnthropicModelsTests
     actual.Should().Be(expected);
   }
 
+  [Fact]
+  public void Claude3Sonnet20240229_WhenCalled_ItShouldReturnExpectedValue()
+  {
+    var expected = "claude-3-sonnet-20240229";
+
+    var actual = AnthropicModels.Claude3Sonnet20240229;
+
+    actual.Should().Be(expected);
+  }
+
   [Fact]
   public void Claude35Sonnet_WhenCalled_ItShouldReturnExpectedValue()
   {
@@ -32,6 +62,36 @@ public class AnthropicModelsTests
     actual.Should().Be(expected);
   }
 
+  [Fact]
+  public void Claude35Sonnet20240620_WhenCalled_ItShouldReturnExpectedValue()
+  {
+    var expected = "claude-3-5-sonnet-20240620";
+
+    var actual = AnthropicModels.Claude35Sonnet20240620;
+
+    actual.Should().Be(expected);
+  }
+
+  [Fact]
+  public void Claude35Sonnet20241022_WhenCalled_ItShouldReturnExpectedValue()
+  {
+    var expected = "claude-3-5-sonnet-20241022";
+
+    var actual = AnthropicModels.Claude35Sonnet20241022;
+
+    actual.Should().Be(expected);
+  }
+
+  [Fact]
+  public void Claude35SonnetLatest_WhenCalled_ItShouldReturnExpectedValue()
+  {
+    var expected = "claude-3-5-sonnet-latest";
+
+    var actual = AnthropicModels.Claude35SonnetLatest;
+
+    actual.Should().Be(expected);
+  }
+
   [Fact]
   public void Claude3Haiku_WhenCalled_ItShouldReturnExpectedValue()
   {
@@ -43,20 +103,45 @@ public class AnthropicModelsTests
   }
 
   [Fact]
-  public void Claude35Sonnet_WhenCalled_ItShouldExpectedValue()
+  public void Claude3Haiku20240307_WhenCalled_ItShouldReturnExpectedValue()
   {
-    var expected = "claude-3-5-sonnet-20240620";
+    var expected = "claude-3-haiku-20240307";
 
-    var actual = AnthropicModels.Claude35Sonnet;
+    var actual = AnthropicModels.Claude3Haiku20240307;
+
+    actual.Should().Be(expected);
+  }
+
+  [Fact]
+  public void Claude35Haiku_WhenCalled_ItShouldReturnExpectedValue()
+  {
+    var expected = "claude-3-5-haiku-20241022";
+
+    var actual = AnthropicModels.Claude35Haiku20241022;
+
+    actual.Should().Be(expected);
+  }
+
+  [Fact]
+  public void Claude35HaikuLatest_WhenCalled_ItShouldReturnExpectedValue()
+  {
+    var expected = "claude-3-5-haiku-latest";
+
+    var actual = AnthropicModels.Claude35HaikuLatest;
 
     actual.Should().Be(expected);
   }
 
   [Theory]
   [InlineData("claude-3-opus-20240229", true)]
+  [InlineData("claude-3-opus-latest", true)]
   [InlineData("claude-3-sonnet-20240229", true)]
   [InlineData("claude-3-5-sonnet-20240620", true)]
+  [InlineData("claude-3-5-sonnet-20241022", true)]
+  [InlineData("claude-3-5-sonnet-latest", true)]
   [InlineData("claude-3-haiku-20240307", true)]
+  [InlineData("claude-3-5-haiku-20241022", true)]
+  [InlineData("claude-3-5-haiku-latest", true)]
   [InlineData("invalid", false)]
   public void IsValidModel_WhenCalled_ItShouldReturnExpectedValue(string modelId, bool expected)
   {