diff --git a/src/libs/StabilityAI/Generated/StabilityAI.Polyfills.g.cs b/src/libs/StabilityAI/Generated/StabilityAI.Polyfills.g.cs
index 76b3bb3..d301122 100644
--- a/src/libs/StabilityAI/Generated/StabilityAI.Polyfills.g.cs
+++ b/src/libs/StabilityAI/Generated/StabilityAI.Polyfills.g.cs
@@ -1,5 +1,4 @@
 
-#if !NET6_0_OR_GREATER
 #nullable enable
 
 namespace StabilityAI
@@ -9,6 +8,7 @@ namespace StabilityAI
     /// </summary>
     public static partial class AutoSdkPolyfills
     {
+#if !NET6_0_OR_GREATER
         /// <summary>
         /// 
         /// </summary>
@@ -48,6 +48,128 @@ public static partial class AutoSdkPolyfills
             content = content ?? throw new global::System.ArgumentNullException(nameof(content));
             return content.ReadAsByteArrayAsync();
         }
+#endif
+
+        /// <summary>
+        /// Creates a JSON request content instance.
+        /// </summary>
+        public static global::System.Net.Http.HttpContent CreateJsonContent<T>(
+            T inputValue,
+            string mediaType,
+            global::System.Text.Json.JsonSerializerOptions? jsonSerializerOptions)
+        {
+            if (string.IsNullOrWhiteSpace(mediaType))
+            {
+                throw new global::System.ArgumentException("Media type is required.", nameof(mediaType));
+            }
+
+#if NET5_0_OR_GREATER
+            return global::System.Net.Http.Json.JsonContent.Create(
+                inputValue: inputValue,
+                mediaType: new global::System.Net.Http.Headers.MediaTypeHeaderValue(mediaType),
+                options: jsonSerializerOptions);
+#else
+            var json = global::System.Text.Json.JsonSerializer.Serialize(inputValue, jsonSerializerOptions);
+            var stringContent = new global::System.Net.Http.StringContent(
+                content: json,
+                encoding: global::System.Text.Encoding.UTF8);
+            stringContent.Headers.ContentType = new global::System.Net.Http.Headers.MediaTypeHeaderValue(mediaType)
+            {
+                CharSet = global::System.Text.Encoding.UTF8.WebName,
+            };
+            return stringContent;
+#endif
+        }
+
+        /// <summary>
+        /// Creates a JSON request content instance using a source-generated serializer context.
+        /// </summary>
+        public static global::System.Net.Http.HttpContent CreateJsonContent(
+            object? inputValue,
+            global::System.Type inputType,
+            string mediaType,
+            global::System.Text.Json.Serialization.JsonSerializerContext jsonSerializerContext)
+        {
+            inputType = inputType ?? throw new global::System.ArgumentNullException(nameof(inputType));
+            jsonSerializerContext = jsonSerializerContext ?? throw new global::System.ArgumentNullException(nameof(jsonSerializerContext));
+
+            if (string.IsNullOrWhiteSpace(mediaType))
+            {
+                throw new global::System.ArgumentException("Media type is required.", nameof(mediaType));
+            }
+
+#if NET5_0_OR_GREATER
+            var jsonTypeInfo = jsonSerializerContext.GetTypeInfo(inputType) ??
+                               throw new global::System.InvalidOperationException($"No JsonTypeInfo registered for '{inputType}'.");
+            return global::System.Net.Http.Json.JsonContent.Create(
+                inputValue: inputValue,
+                jsonTypeInfo: jsonTypeInfo,
+                mediaType: new global::System.Net.Http.Headers.MediaTypeHeaderValue(mediaType));
+#else
+            var json = global::System.Text.Json.JsonSerializer.Serialize(
+                value: inputValue,
+                inputType: inputType,
+                jsonSerializerContext);
+            var stringContent = new global::System.Net.Http.StringContent(
+                content: json,
+                encoding: global::System.Text.Encoding.UTF8);
+            stringContent.Headers.ContentType = new global::System.Net.Http.Headers.MediaTypeHeaderValue(mediaType)
+            {
+                CharSet = global::System.Text.Encoding.UTF8.WebName,
+            };
+            return stringContent;
+#endif
+        }
+
+        /// <summary>
+        /// Reads JSON content into the specified type using serializer options.
+        /// </summary>
+        public static async global::System.Threading.Tasks.Task<T?> ReadFromJsonAsync<T>(
+            this global::System.Net.Http.HttpContent content,
+            global::System.Text.Json.JsonSerializerOptions? jsonSerializerOptions,
+            global::System.Threading.CancellationToken cancellationToken)
+        {
+            content = content ?? throw new global::System.ArgumentNullException(nameof(content));
+
+#if NET5_0_OR_GREATER
+            return await global::System.Net.Http.Json.HttpContentJsonExtensions.ReadFromJsonAsync<T>(
+                content,
+                jsonSerializerOptions,
+                cancellationToken).ConfigureAwait(false);
+#else
+            using var stream = await AutoSdkPolyfills.ReadAsStreamAsync(content, cancellationToken).ConfigureAwait(false);
+            return await global::System.Text.Json.JsonSerializer.DeserializeAsync<T>(
+                utf8Json: stream,
+                options: jsonSerializerOptions,
+                cancellationToken: cancellationToken).ConfigureAwait(false);
+#endif
+        }
+
+        /// <summary>
+        /// Reads JSON content into the specified type using a source-generated serializer context.
+        /// </summary>
+        public static async global::System.Threading.Tasks.Task<T?> ReadFromJsonAsync<T>(
+            this global::System.Net.Http.HttpContent content,
+            global::System.Text.Json.Serialization.JsonSerializerContext jsonSerializerContext,
+            global::System.Threading.CancellationToken cancellationToken)
+        {
+            content = content ?? throw new global::System.ArgumentNullException(nameof(content));
+            jsonSerializerContext = jsonSerializerContext ?? throw new global::System.ArgumentNullException(nameof(jsonSerializerContext));
+
+#if NET5_0_OR_GREATER
+            return (T?)await global::System.Net.Http.Json.HttpContentJsonExtensions.ReadFromJsonAsync(
+                content,
+                typeof(T),
+                jsonSerializerContext,
+                cancellationToken).ConfigureAwait(false);
+#else
+            using var stream = await AutoSdkPolyfills.ReadAsStreamAsync(content, cancellationToken).ConfigureAwait(false);
+            return (T?)await global::System.Text.Json.JsonSerializer.DeserializeAsync(
+                utf8Json: stream,
+                returnType: typeof(T),
+                jsonSerializerContext,
+                cancellationToken: cancellationToken).ConfigureAwait(false);
+#endif
+        }
     }
 }
-#endif
\ No newline at end of file
diff --git a/src/libs/StabilityAI/Generated/StabilityAI.V1EnginesClient.ListEngines.g.cs b/src/libs/StabilityAI/Generated/StabilityAI.V1EnginesClient.ListEngines.g.cs
index 3c94c19..2b01cc8 100644
--- a/src/libs/StabilityAI/Generated/StabilityAI.V1EnginesClient.ListEngines.g.cs
+++ b/src/libs/StabilityAI/Generated/StabilityAI.V1EnginesClient.ListEngines.g.cs
@@ -224,7 +224,6 @@ partial void ProcessListEnginesResponseContent(
                 try
                 {
                     __response.EnsureSuccessStatusCode();
-
                     using var __content = await __response.Content.ReadAsStreamAsync(
 #if NET5_0_OR_GREATER
                         cancellationToken
diff --git a/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.ImageToImage.g.cs b/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.ImageToImage.g.cs
index 496e7c9..1606158 100644
--- a/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.ImageToImage.g.cs
+++ b/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.ImageToImage.g.cs
@@ -530,7 +530,6 @@ partial void ProcessImageToImageResponseContent(
                 try
                 {
                     __response.EnsureSuccessStatusCode();
-
                     using var __content = await __response.Content.ReadAsStreamAsync(
 #if NET5_0_OR_GREATER
                         cancellationToken
diff --git a/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.Masking.g.cs b/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.Masking.g.cs
index d95c417..9cf76e7 100644
--- a/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.Masking.g.cs
+++ b/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.Masking.g.cs
@@ -522,7 +522,6 @@ partial void ProcessMaskingResponseContent(
                 try
                 {
                     __response.EnsureSuccessStatusCode();
-
                     using var __content = await __response.Content.ReadAsStreamAsync(
 #if NET5_0_OR_GREATER
                         cancellationToken
diff --git a/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.TextToImage.g.cs b/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.TextToImage.g.cs
index e29b81b..7fce480 100644
--- a/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.TextToImage.g.cs
+++ b/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.TextToImage.g.cs
@@ -450,7 +450,6 @@ partial void ProcessTextToImageResponseContent(
                 try
                 {
                     __response.EnsureSuccessStatusCode();
-
                     using var __content = await __response.Content.ReadAsStreamAsync(
 #if NET5_0_OR_GREATER
                         cancellationToken
diff --git a/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.UpscaleImage.g.cs b/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.UpscaleImage.g.cs
index 3ec8f05..7a6c71a 100644
--- a/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.UpscaleImage.g.cs
+++ b/src/libs/StabilityAI/Generated/StabilityAI.V1GenerationClient.UpscaleImage.g.cs
@@ -466,7 +466,6 @@ partial void ProcessUpscaleImageResponseContent(
                 try
                 {
                     __response.EnsureSuccessStatusCode();
-
                     using var __content = await __response.Content.ReadAsStreamAsync(
 #if NET5_0_OR_GREATER
                         cancellationToken
diff --git a/src/libs/StabilityAI/Generated/StabilityAI.V1UserClient.UserAccount.g.cs b/src/libs/StabilityAI/Generated/StabilityAI.V1UserClient.UserAccount.g.cs
index afb3ef1..fd0d271 100644
--- a/src/libs/StabilityAI/Generated/StabilityAI.V1UserClient.UserAccount.g.cs
+++ b/src/libs/StabilityAI/Generated/StabilityAI.V1UserClient.UserAccount.g.cs
@@ -213,7 +213,6 @@ partial void ProcessUserAccountResponseContent(
                 try
                 {
                     __response.EnsureSuccessStatusCode();
-
                     using var __content = await __response.Content.ReadAsStreamAsync(
 #if NET5_0_OR_GREATER
                         cancellationToken
diff --git a/src/libs/StabilityAI/Generated/StabilityAI.V1UserClient.UserBalance.g.cs b/src/libs/StabilityAI/Generated/StabilityAI.V1UserClient.UserBalance.g.cs
index 6862d1d..9d8d4d0 100644
--- a/src/libs/StabilityAI/Generated/StabilityAI.V1UserClient.UserBalance.g.cs
+++ b/src/libs/StabilityAI/Generated/StabilityAI.V1UserClient.UserBalance.g.cs
@@ -225,7 +225,6 @@ partial void ProcessUserBalanceResponseContent(
                 try
                 {
                     __response.EnsureSuccessStatusCode();
-
                     using var __content = await __response.Content.ReadAsStreamAsync(
 #if NET5_0_OR_GREATER
                         cancellationToken