diff --git a/src/libs/Google.Gemini/NextGen/Generated/Google.Gemini.NextGen.Models.Model.g.cs b/src/libs/Google.Gemini/NextGen/Generated/Google.Gemini.NextGen.Models.Model.g.cs
index 369beed24..1efac1b93 100644
--- a/src/libs/Google.Gemini/NextGen/Generated/Google.Gemini.NextGen.Models.Model.g.cs
+++ b/src/libs/Google.Gemini/NextGen/Generated/Google.Gemini.NextGen.Models.Model.g.cs
@@ -116,6 +116,11 @@ public Model(string value)
         /// </summary>
         public static Model Gemini38FlashTts { get; } = new("gemini-3.8-flash-tts");
 
+        /// <summary>
+        /// Gemini 4 Argon - Our new frontier model, built to solve the hardest problems with depth and precision across real-world software engineering and knowledge work.
+        /// </summary>
+        public static Model Gemini4Argon { get; } = new("gemini-4-argon");
+
         /// <summary>
         /// Latest release of Gemini Flash
         /// </summary>
@@ -213,6 +218,7 @@ public static Model FromValue(string value)
                 "gemini-3.8-flash" => Gemini38Flash,
                 "gemini-3.8-flash-lite-tts" => Gemini38FlashLiteTts,
                 "gemini-3.8-flash-tts" => Gemini38FlashTts,
+                "gemini-4-argon" => Gemini4Argon,
                 "gemini-flash-latest" => GeminiFlashLatest,
                 "gemini-flash-lite-latest" => GeminiFlashLiteLatest,
                 "gemini-nano-banana-2.1" => GeminiNanoBanana21,
@@ -255,6 +261,7 @@ public static Model FromValue(string value)
             "gemini-3.8-flash" => true,
             "gemini-3.8-flash-lite-tts" => true,
             "gemini-3.8-flash-tts" => true,
+            "gemini-4-argon" => true,
             "gemini-flash-latest" => true,
             "gemini-flash-lite-latest" => true,
             "gemini-nano-banana-2.1" => true,
diff --git a/src/libs/Google.Gemini/nextgen.openapi.json b/src/libs/Google.Gemini/nextgen.openapi.json
index d503cae86..afdb3e91a 100644
--- a/src/libs/Google.Gemini/nextgen.openapi.json
+++ b/src/libs/Google.Gemini/nextgen.openapi.json
@@ -8049,6 +8049,7 @@
           "gemini-3.6-flash",
           "gemini-3.7-flash",
           "gemini-3.8-flash",
+          "gemini-4-argon",
           "gemini-3.8-flash-tts",
           "gemini-3.8-flash-lite-tts",
           "lyria-3-clip-preview",
@@ -8084,6 +8085,7 @@
           "Gemini 3.6 Flash - Our previous generation Flash model, balancing speed and multimodal capabilities across general agentic and everyday tasks.",
           "Gemini 3.7 Flash - Our high-speed, efficient Flash model built for everyday coding, agentic tool use, and reliable multi-step execution.",
           "Gemini 3.8 Flash - Our most intelligent Flash model, engineered for long-horizon software engineering, autonomous agents, and complex enterprise workflows.",
+          "Gemini 4 Argon - Our new frontier model, built to solve the hardest problems with depth and precision across real-world software engineering and knowledge work.",
           "Gemini 3.8 Flash TTS - Flagship TTS model for Voice Design and dual-speaker screenplay control. Prompt custom vocal personas, direct line-by-line delivery, and add vocal bursts.",
           "Gemini 3.8 Flash Lite TTS - High-speed and cost-efficient, ideal for rapid dubbing, media localization, and high-throughput voice agents. Direct replacement for gemini-3.1-flash-tts-preview.",
           "Our low-latency, music generation model optimized for high-fidelity audio clips and precise rhythmic control.",
@@ -8115,6 +8117,7 @@
           "gemini-3.8-flash": "Gemini",
           "gemini-3.8-flash-lite-tts": "Speech",
           "gemini-3.8-flash-tts": "Speech",
+          "gemini-4-argon": "Gemini",
           "gemini-flash-latest": "Gemini",
           "gemini-flash-lite-latest": "Gemini",
           "gemini-nano-banana-2.1": "Image",