diff --git a/OpenAI-DotNet/Extensions/ResponseExtensions.cs b/OpenAI-DotNet/Extensions/ResponseExtensions.cs
index 4cd48f09..e468f7a9 100644
--- a/OpenAI-DotNet/Extensions/ResponseExtensions.cs
+++ b/OpenAI-DotNet/Extensions/ResponseExtensions.cs
@@ -256,7 +256,7 @@ private static async Task<string> ReadAsStringAsync(this HttpResponseMessage res
 
                         if (@event.Data != null)
                         {
-                            @object[ServerSentEventKind.Data.ToString().ToLower()] = JsonNode.Parse(@event.Data.ToJsonString());
+                            @object[nameof(ServerSentEventKind.Data).ToLower()] = JsonNode.Parse(@event.Data.ToJsonString());
                         }
 
                         array.Add(@object);
diff --git a/OpenAI-DotNet/OpenAI-DotNet.csproj b/OpenAI-DotNet/OpenAI-DotNet.csproj
index 2e81ad85..235e3f0e 100644
--- a/OpenAI-DotNet/OpenAI-DotNet.csproj
+++ b/OpenAI-DotNet/OpenAI-DotNet.csproj
@@ -29,8 +29,11 @@ More context [on Roger Pincombe's blog](https://rogerpincombe.com/openai-dotnet-
     <AssemblyOriginatorKeyFile>OpenAI-DotNet.pfx</AssemblyOriginatorKeyFile>
     <IncludeSymbols>true</IncludeSymbols>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
-    <Version>8.8.3</Version>
+    <Version>8.8.4</Version>
     <PackageReleaseNotes>
+Version 8.8.4
+- Fix RealtimeSessionConfiguration and CreateResponseRequest model parameter overriding prompt settings
+- Fix Threads.MessageResponse.Status not being properly set to Completed
 Version 8.8.3
 - Fix regression ObjectDisposedException from OpenAIBaseEndpoint refactoring
 - Add Azure Blob Batch API compatible fields for CreateBatchRequest
diff --git a/OpenAI-DotNet/Realtime/SessionConfiguration.cs b/OpenAI-DotNet/Realtime/SessionConfiguration.cs
index d6f4eaa6..3e76bb53 100644
--- a/OpenAI-DotNet/Realtime/SessionConfiguration.cs
+++ b/OpenAI-DotNet/Realtime/SessionConfiguration.cs
@@ -29,42 +29,85 @@ public SessionConfiguration(
             int? maxResponseOutputTokens,
             int? expiresAfter)
             : this(
-                model: model,
-                modalities: modalities,
-                voice: voice,
-                instructions: instructions,
-                inputAudioFormat: inputAudioFormat,
-                outputAudioFormat: outputAudioFormat,
+                model,
+                prompt: null,
+                instructions,
+                modalities,
+                voice,
+                speed: null,
+                inputAudioFormat,
+                outputAudioFormat,
+                inputAudioNoiseSettings: null,
                 inputAudioTranscriptionSettings: new(transcriptionModel),
-                turnDetectionSettings: turnDetectionSettings,
-                tools: tools,
-                toolChoice: toolChoice,
-                temperature: temperature,
-                maxResponseOutputTokens: maxResponseOutputTokens,
-                expiresAfter: expiresAfter)
+                turnDetectionSettings,
+                tools,
+                toolChoice,
+                temperature,
+                maxResponseOutputTokens,
+                expiresAfter)
         {
         }
 
+        [Obsolete("Use new ctor overload")]
         public SessionConfiguration(
             Model model,
+            Modality modalities,
+            Voice voice,
+            string instructions,
+            RealtimeAudioFormat inputAudioFormat,
+            RealtimeAudioFormat outputAudioFormat,
+            InputAudioTranscriptionSettings inputAudioTranscriptionSettings,
+            IVoiceActivityDetectionSettings turnDetectionSettings,
+            IEnumerable<Tool> tools,
+            string toolChoice,
+            float? temperature,
+            int? maxResponseOutputTokens,
+            int? expiresAfter,
+            NoiseReductionSettings inputAudioNoiseSettings,
+            float? speed,
+            Prompt prompt)
+            : this(
+                model,
+                prompt,
+                instructions,
+                modalities,
+                voice,
+                speed,
+                inputAudioFormat,
+                outputAudioFormat,
+                inputAudioNoiseSettings,
+                inputAudioTranscriptionSettings,
+                turnDetectionSettings,
+                tools,
+                toolChoice,
+                temperature,
+                maxResponseOutputTokens,
+                expiresAfter)
+        {
+        }
+
+        public SessionConfiguration(
+            Model model = null,
+            Prompt prompt = null,
+            string instructions = null,
             Modality modalities = Modality.Text | Modality.Audio,
             Voice voice = null,
-            string instructions = null,
+            float? speed = null,
             RealtimeAudioFormat inputAudioFormat = RealtimeAudioFormat.PCM16,
             RealtimeAudioFormat outputAudioFormat = RealtimeAudioFormat.PCM16,
+            NoiseReductionSettings inputAudioNoiseSettings = null,
             InputAudioTranscriptionSettings inputAudioTranscriptionSettings = null,
             IVoiceActivityDetectionSettings turnDetectionSettings = null,
             IEnumerable<Tool> tools = null,
             string toolChoice = null,
             float? temperature = null,
             int? maxResponseOutputTokens = null,
-            int? expiresAfter = null,
-            NoiseReductionSettings inputAudioNoiseSettings = null,
-            float? speed = null,
-            Prompt prompt = null)
+            int? expiresAfter = null)
         {
             ClientSecret = new ClientSecret(expiresAfter);
-            Model = string.IsNullOrWhiteSpace(model?.Id) ? Models.Model.GPT4oRealtime : model;
+            Model = string.IsNullOrWhiteSpace(model?.Id) && prompt == null
+                    ? Models.Model.GPT4oRealtime
+                    : model;
             Modalities = modalities;
             Voice = string.IsNullOrWhiteSpace(voice?.Id) ? OpenAI.Voice.Alloy : voice;
             Instructions = string.IsNullOrWhiteSpace(instructions)
@@ -153,6 +196,7 @@ internal SessionConfiguration(
         /// </summary>
         [JsonInclude]
         [JsonPropertyName("model")]
+        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
         public string Model { get; private set; }
 
         /// <summary>
diff --git a/OpenAI-DotNet/Responses/CreateResponseRequest.cs b/OpenAI-DotNet/Responses/CreateResponseRequest.cs
index b314ba77..65bf0abb 100644
--- a/OpenAI-DotNet/Responses/CreateResponseRequest.cs
+++ b/OpenAI-DotNet/Responses/CreateResponseRequest.cs
@@ -159,7 +159,9 @@ public CreateResponseRequest(
             int? topLogProbs = null)
         {
             Input = input?.ToArray() ?? throw new ArgumentNullException(nameof(input));
-            Model = string.IsNullOrWhiteSpace(model) ? Models.Model.ChatGPT4o : model;
+            Model = string.IsNullOrWhiteSpace(model?.Id) && prompt == null
+                ? Models.Model.GPT4oRealtime
+                : model;
             Background = background;
             Include = include?.ToList();
             Instructions = instructions;
@@ -214,6 +216,7 @@ public CreateResponseRequest(
         /// </summary>
         [JsonInclude]
         [JsonPropertyName("model")]
+        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
         public string Model { get; private set; }
 
         /// <summary>
diff --git a/OpenAI-DotNet/Threads/MessageResponse.cs b/OpenAI-DotNet/Threads/MessageResponse.cs
index bd23673e..c1f4b13c 100644
--- a/OpenAI-DotNet/Threads/MessageResponse.cs
+++ b/OpenAI-DotNet/Threads/MessageResponse.cs
@@ -255,8 +255,7 @@ internal void AppendFrom(MessageResponse other)
                 IncompleteAtUnixTimeSeconds = other.IncompleteAtUnixTimeSeconds;
             }
 
-            if (Status == 0 &&
-                other.Status > 0)
+            if (other.Status > 0)
             {
                 Status = other.Status;
             }