feat: add missing model constants

src/AnthropicClient/Models/AnthropicModels.cs

@@ -20,6 +20,16 @@ public static class AnthropicModels
   /// </summary>
   public const string Claude3OpusLatest = "claude-3-opus-latest";
 
+  /// <summary>
+  /// The Claude 4 Opus model.
+  /// </summary>
+  public const string ClaudeOpus420250514 = "claude-opus-4-20250514";
+
+  /// <summary>
+  /// The Claude 4 Opus model.
+  /// </summary>
+  public const string ClaudeOpus40 = "claude-opus-4-0";
+
   /// <summary>
   /// The Claude 3 Sonnet model.
   /// </summary>
@@ -50,6 +60,26 @@ public static class AnthropicModels
   /// </summary>
   public const string Claude35SonnetLatest = "claude-3-5-sonnet-latest";
 
+  /// <summary>
+  /// The Claude 3 Sonnet model
+  /// </summary>
+  public const string Claude37Sonnet20250219 = "claude-3-7-sonnet-20250219";
+
+  /// <summary>
+  /// The Claude 3 Sonnet model
+  /// </summary>
+  public const string Claude37SonnetLatest = "claude-3-7-sonnet-latest";
+
+  /// <summary>
+  /// The Claude 4 Sonnet model.
+  /// </summary>
+  public const string ClaudeSonnet420250514 = "claude-sonnet-4-20250514";
+
+  /// <summary>
+  /// The Claude 4 Sonnet model.
+  /// </summary>
+  public const string ClaudeSonnet40 = "claude-sonnet-4-0";
+
   /// <summary>
   /// The Claude 3 Haiku model.
   /// </summary>

tests/AnthropicClient.Tests/Unit/Models/AnthropicModelsTests.cs

@@ -131,4 +131,64 @@ public class AnthropicModelsTests
 
     actual.Should().Be(expected);
   }
+
+  [Fact]
+  public void Claude37Sonnet20250219_WhenCalled_ItShouldReturnExpectedValue()
+  {
+    var expected = "claude-3-7-sonnet-20250219";
+
+    var actual = AnthropicModels.Claude37Sonnet20250219;
+
+    actual.Should().Be(expected);
+  }
+
+  [Fact]
+  public void Claude37SonnetLatest_WhenCalled_ItShouldReturnExpectedValue()
+  {
+    var expected = "claude-3-7-sonnet-latest";
+
+    var actual = AnthropicModels.Claude37SonnetLatest;
+
+    actual.Should().Be(expected);
+  }
+
+  [Fact]
+  public void ClaudeSonnet420250514_WhenCalled_ItShouldReturnExpectedValue()
+  {
+    var expected = "claude-sonnet-4-20250514";
+
+    var actual = AnthropicModels.ClaudeSonnet420250514;
+
+    actual.Should().Be(expected);
+  }
+
+  [Fact]
+  public void ClaudeSonnet40_WhenCalled_ItShouldReturnExpectedValue()
+  {
+    var expected = "claude-sonnet-4-0";
+
+    var actual = AnthropicModels.ClaudeSonnet40;
+
+    actual.Should().Be(expected);
+  }
+
+  [Fact]
+  public void ClaudeOpus420250514_WhenCalled_ItShouldReturnExpectedValue()
+  {
+    var expected = "claude-opus-4-20250514";
+
+    var actual = AnthropicModels.ClaudeOpus420250514;
+
+    actual.Should().Be(expected);
+  }
+
+  [Fact]
+  public void ClaudeOpus40_WhenCalled_ItShouldReturnExpectedValue()
+  {
+    var expected = "claude-opus-4-0";
+
+    var actual = AnthropicModels.ClaudeOpus40;
+
+    actual.Should().Be(expected);
+  }
 }