diff --git a/src/Infrastructure/BotSharp.Abstraction/MLTasks/Settings/LlmCostSetting.cs b/src/Infrastructure/BotSharp.Abstraction/MLTasks/Settings/LlmCostSetting.cs
new file mode 100644
index 000000000..825b20906
--- /dev/null
+++ b/src/Infrastructure/BotSharp.Abstraction/MLTasks/Settings/LlmCostSetting.cs
@@ -0,0 +1,64 @@
+namespace BotSharp.Abstraction.MLTasks.Settings;
+
+/// <summary>
+/// Cost per 1K tokens
+/// </summary>
+public class LlmCostSetting
+{
+    #region Text token
+    public float TextInputCost { get; set; } = 0f;
+    public float CachedTextInputCost { get; set; } = 0f;
+    public float CachedTextInputWriteCost { get; set; } = 0f;
+    public float TextOutputCost { get; set; } = 0f;
+    public string DefaultServiceTier { get; set; } = "standard";
+    public IList<LlmTextTokenCostTier>? TextTokenCostTiers { get; set; }
+    #endregion
+
+    #region Audio token
+    public float AudioInputCost { get; set; } = 0f;
+    public float CachedAudioInputCost { get; set; } = 0f;
+    public float AudioOutputCost { get; set; } = 0f;
+    #endregion
+
+    #region Image token
+    public float ImageInputCost { get; set; } = 0f;
+    public float CachedImageInputCost { get; set; } = 0f;
+    public float ImageOutputCost { get; set; } = 0f;
+    #endregion
+
+    #region Image
+    public IList<LlmImageCost>? ImageCosts { get; set; }
+    #endregion
+
+    public LlmTextTokenCostTier? GetTextTokenCostTier(long inputTokens, string? serviceTier = null)
+    {
+        var selectedServiceTier = string.IsNullOrWhiteSpace(serviceTier)
+            ? DefaultServiceTier
+            : serviceTier;
+
+        return TextTokenCostTiers?.FirstOrDefault(x =>
+            string.Equals(x.ServiceTier, selectedServiceTier, StringComparison.OrdinalIgnoreCase)
+            && (!x.InputTokensGreaterThan.HasValue || inputTokens > x.InputTokensGreaterThan.Value)
+            && (!x.InputTokensLessThanOrEqual.HasValue || inputTokens <= x.InputTokensLessThanOrEqual.Value));
+    }
+}
+
+public class LlmTextTokenCostTier
+{
+    public string ServiceTier { get; set; } = "standard";
+    public long? InputTokensGreaterThan { get; set; }
+    public long? InputTokensLessThanOrEqual { get; set; }
+    public float TextInputCost { get; set; }
+    public float CachedTextInputCost { get; set; }
+    public float CachedTextInputWriteCost { get; set; }
+    public float TextOutputCost { get; set; }
+}
+
+public class LlmImageCost
+{
+    /// <summary>
+    /// Attributes: e.g., [quality]: "medium", [size] = "1024x1024"
+    /// </summary>
+    public Dictionary<string, string> Attributes { get; set; } = [];
+    public float Cost { get; set; } = 0f;
+}
\ No newline at end of file
diff --git a/src/Infrastructure/BotSharp.Abstraction/MLTasks/Settings/LlmModelSetting.cs b/src/Infrastructure/BotSharp.Abstraction/MLTasks/Settings/LlmModelSetting.cs
index c843c0395..815b3b44a 100644
--- a/src/Infrastructure/BotSharp.Abstraction/MLTasks/Settings/LlmModelSetting.cs
+++ b/src/Infrastructure/BotSharp.Abstraction/MLTasks/Settings/LlmModelSetting.cs
@@ -176,70 +176,6 @@ public class ModelParamSetting
     public IEnumerable<string>? Options { get; set; }
 }
 
-
-/// <summary>
-/// Cost per 1K tokens
-/// </summary>
-public class LlmCostSetting
-{
-    #region Text token
-    public float TextInputCost { get; set; } = 0f;
-    public float CachedTextInputCost { get; set; } = 0f;
-    public float CachedTextInputWriteCost { get; set; } = 0f;
-    public float TextOutputCost { get; set; } = 0f;
-    public string DefaultServiceTier { get; set; } = "standard";
-    public IList<LlmTextTokenCostTier>? TextTokenCostTiers { get; set; }
-    #endregion
-
-    #region Audio token
-    public float AudioInputCost { get; set; } = 0f;
-    public float CachedAudioInputCost { get; set; } = 0f;
-    public float AudioOutputCost { get; set; } = 0f;
-    #endregion
-
-    #region Image token
-    public float ImageInputCost { get; set; } = 0f;
-    public float CachedImageInputCost { get; set; } = 0f;
-    public float ImageOutputCost { get; set; } = 0f;
-    #endregion
-
-    #region Image
-    public IList<LlmImageCost>? ImageCosts { get; set; }
-    #endregion
-
-    public LlmTextTokenCostTier? GetTextTokenCostTier(long inputTokens, string? serviceTier = null)
-    {
-        var selectedServiceTier = string.IsNullOrWhiteSpace(serviceTier)
-            ? DefaultServiceTier
-            : serviceTier;
-
-        return TextTokenCostTiers?.FirstOrDefault(x =>
-            string.Equals(x.ServiceTier, selectedServiceTier, StringComparison.OrdinalIgnoreCase)
-            && (!x.InputTokensGreaterThan.HasValue || inputTokens > x.InputTokensGreaterThan.Value)
-            && (!x.InputTokensLessThanOrEqual.HasValue || inputTokens <= x.InputTokensLessThanOrEqual.Value));
-    }
-}
-
-public class LlmTextTokenCostTier
-{
-    public string ServiceTier { get; set; } = "standard";
-    public long? InputTokensGreaterThan { get; set; }
-    public long? InputTokensLessThanOrEqual { get; set; }
-    public float TextInputCost { get; set; }
-    public float CachedTextInputCost { get; set; }
-    public float CachedTextInputWriteCost { get; set; }
-    public float TextOutputCost { get; set; }
-}
-
-public class LlmImageCost
-{
-    /// <summary>
-    /// Attributes: e.g., [quality]: "medium", [size] = "1024x1024"
-    /// </summary>
-    public Dictionary<string, string> Attributes { get; set; } = [];
-    public float Cost { get; set; } = 0f;
-}
-
 public enum LlmModelType
 {
     All = 0,