diff --git a/OpenAI-DotNet/Chat/ChatRequest.cs b/OpenAI-DotNet/Chat/ChatRequest.cs
index c8fd3c24..0bf10b65 100644
--- a/OpenAI-DotNet/Chat/ChatRequest.cs
+++ b/OpenAI-DotNet/Chat/ChatRequest.cs
@@ -151,7 +151,7 @@ public ChatRequest(
         /// <param name="reasoningEffort">
         /// Constrains the effort of reasoning for <see href="https://platform.openai.com/docs/guides/reasoning">Reasoning Models</see>.<br/>
         /// Currently supported values are: Low, Medium, High. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning response.<br/>
-        /// <b>o1 models only!</b>
+        /// <b>Reasoning models only!</b>
         /// </param>
         /// <param name="user">
         /// A unique identifier representing your end-user, which can help OpenAI to monitor and detect abuse.
@@ -258,7 +258,7 @@ public ChatRequest(
         /// Currently supported values are: Low, Medium, High. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning response.
         /// </summary>
         /// <remarks>
-        /// <b>o1 models only!</b>
+        /// <b>Reasoning models only!</b>
         /// </remarks>
         [JsonPropertyName("reasoning_effort")]
         [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
diff --git a/OpenAI-DotNet/Common/ReasoningEffort.cs b/OpenAI-DotNet/Common/ReasoningEffort.cs
index 9a4a262f..ab2da4e3 100644
--- a/OpenAI-DotNet/Common/ReasoningEffort.cs
+++ b/OpenAI-DotNet/Common/ReasoningEffort.cs
@@ -9,7 +9,7 @@ namespace OpenAI
     /// Currently supported values are: Low, Medium, High. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning response.
     /// </summary>
     /// <remarks>
-    /// <b>o1 models only!</b>
+    /// <b>Reasoning models only!</b>
     /// </remarks>
     public enum ReasoningEffort
     {
diff --git a/OpenAI-DotNet/Models/Model.cs b/OpenAI-DotNet/Models/Model.cs
index 5467c925..755bd055 100644
--- a/OpenAI-DotNet/Models/Model.cs
+++ b/OpenAI-DotNet/Models/Model.cs
@@ -77,6 +77,8 @@ public Model(string id, string ownedBy = null)
 
         public static Model O1Mini { get; } = new("o1-mini", "openai");
 
+        public static Model O3Mini { get; } = new("o3-mini", "openai");
+
         public static Model GPT4oRealtime { get; } = new("gpt-4o-realtime-preview", "openai");
 
         /// <summary>
diff --git a/OpenAI-DotNet/OpenAI-DotNet.csproj b/OpenAI-DotNet/OpenAI-DotNet.csproj
index 528965c2..7e3d282c 100644
--- a/OpenAI-DotNet/OpenAI-DotNet.csproj
+++ b/OpenAI-DotNet/OpenAI-DotNet.csproj
@@ -32,7 +32,7 @@ More context [on Roger Pincombe's blog](https://rogerpincombe.com/openai-dotnet-
     <Version>8.5.4</Version>
     <PackageReleaseNotes>
 Version 8.5.4
-- Update ChatRequest to support 03 series reasoning models
+- Update ChatRequest to support o3 series reasoning models
 Version 8.5.3
 - Fix JsonStringEnumConverter for ChatRequests
 Version 8.5.1