diff --git a/codegen/generator/src/OpenAI.Library.Plugin.csproj b/codegen/generator/src/OpenAI.Library.Plugin.csproj
index bfae1a1f9..c3ee29565 100644
--- a/codegen/generator/src/OpenAI.Library.Plugin.csproj
+++ b/codegen/generator/src/OpenAI.Library.Plugin.csproj
@@ -8,7 +8,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="Microsoft.TypeSpec.Generator.ClientModel" Version="1.0.0-alpha.20250915.1" />
+      <PackageReference Include="Microsoft.TypeSpec.Generator.ClientModel" Version="1.0.0-alpha.20250926.6" />
     </ItemGroup>
 
   <!-- Copy output to package dist path for local execution and  -->
@@ -24,3 +24,4 @@
 </Project>
 
 
+
diff --git a/codegen/package.json b/codegen/package.json
index bdfeb8a4a..25fa1f3cf 100644
--- a/codegen/package.json
+++ b/codegen/package.json
@@ -30,7 +30,7 @@
   "dependencies": {
     "@open-ai/plugin": "file:",
     "@azure-tools/typespec-client-generator-core": "0.60.0",
-    "@typespec/http-client-csharp": "1.0.0-alpha.20250915.1",
+    "@typespec/http-client-csharp": "1.0.0-alpha.20250926.6",
     "@typespec/http": "1.4.0",
     "@typespec/openapi": "1.4.0"
   },
diff --git a/package-lock.json b/package-lock.json
index 4741b23a8..84d58cc73 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,7 +22,7 @@
         "@azure-tools/typespec-client-generator-core": "0.60.0",
         "@open-ai/plugin": "file:",
         "@typespec/http": "1.4.0",
-        "@typespec/http-client-csharp": "1.0.0-alpha.20250915.1",
+        "@typespec/http-client-csharp": "1.0.0-alpha.20250926.6",
         "@typespec/openapi": "1.4.0"
       },
       "devDependencies": {
@@ -1139,9 +1139,9 @@
       "license": "MIT"
     },
     "node_modules/@rollup/rollup-android-arm-eabi": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm-eabi/-/rollup-android-arm-eabi-4.50.2.tgz",
-      "integrity": "sha512-uLN8NAiFVIRKX9ZQha8wy6UUs06UNSZ32xj6giK/rmMXAgKahwExvK6SsmgU5/brh4w/nSgj8e0k3c1HBQpa0A==",
+      "version": "4.52.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm-eabi/-/rollup-android-arm-eabi-4.52.3.tgz",
+      "integrity": "sha512-h6cqHGZ6VdnwliFG1NXvMPTy/9PS3h8oLh7ImwR+kl+oYnQizgjxsONmmPSb2C66RksfkfIxEVtDSEcJiO0tqw==",
       "cpu": [
         "arm"
       ],
@@ -1153,9 +1153,9 @@
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     },
     "node_modules/@rollup/rollup-android-arm64": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm64/-/rollup-android-arm64-4.50.2.tgz",
-      "integrity": "sha512-oEouqQk2/zxxj22PNcGSskya+3kV0ZKH+nQxuCCOGJ4oTXBdNTbv+f/E3c74cNLeMO1S5wVWacSws10TTSB77g==",
+      "version": "4.52.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm64/-/rollup-android-arm64-4.52.3.tgz",
+      "integrity": "sha512-wd+u7SLT/u6knklV/ifG7gr5Qy4GUbH2hMWcDauPFJzmCZUAJ8L2bTkVXC2niOIxp8lk3iH/QX8kSrUxVZrOVw==",
       "cpu": [
         "arm64"
       ],
@@ -1167,9 +1167,9 @@
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     },
     "node_modules/@rollup/rollup-darwin-arm64": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-arm64/-/rollup-darwin-arm64-4.50.2.tgz",
-      "integrity": "sha512-OZuTVTpj3CDSIxmPgGH8en/XtirV5nfljHZ3wrNwvgkT5DQLhIKAeuFSiwtbMto6oVexV0k1F1zqURPKf5rI1Q==",
+      "version": "4.52.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-arm64/-/rollup-darwin-arm64-4.52.3.tgz",
+      "integrity": "sha512-lj9ViATR1SsqycwFkJCtYfQTheBdvlWJqzqxwc9f2qrcVrQaF/gCuBRTiTolkRWS6KvNxSk4KHZWG7tDktLgjg==",
       "cpu": [
         "arm64"
       ],
@@ -1181,9 +1181,9 @@
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     },
     "node_modules/@rollup/rollup-darwin-x64": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-x64/-/rollup-darwin-x64-4.50.2.tgz",
-      "integrity": "sha512-Wa/Wn8RFkIkr1vy1k1PB//VYhLnlnn5eaJkfTQKivirOvzu5uVd2It01ukeQstMursuz7S1bU+8WW+1UPXpa8A==",
+      "version": "4.52.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-x64/-/rollup-darwin-x64-4.52.3.tgz",
+      "integrity": "sha512-+Dyo7O1KUmIsbzx1l+4V4tvEVnVQqMOIYtrxK7ncLSknl1xnMHLgn7gddJVrYPNZfEB8CIi3hK8gq8bDhb3h5A==",
       "cpu": [
         "x64"
       ],
@@ -1195,9 +1195,9 @@
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     },
     "node_modules/@rollup/rollup-freebsd-arm64": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-freebsd-arm64/-/rollup-freebsd-arm64-4.50.2.tgz",
-      "integrity": "sha512-QkzxvH3kYN9J1w7D1A+yIMdI1pPekD+pWx7G5rXgnIlQ1TVYVC6hLl7SOV9pi5q9uIDF9AuIGkuzcbF7+fAhow==",
+      "version": "4.52.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-freebsd-arm64/-/rollup-freebsd-arm64-4.52.3.tgz",
+      "integrity": "sha512-u9Xg2FavYbD30g3DSfNhxgNrxhi6xVG4Y6i9Ur1C7xUuGDW3banRbXj+qgnIrwRN4KeJ396jchwy9bCIzbyBEQ==",
       "cpu": [
         "arm64"
       ],
@@ -1209,9 +1209,9 @@
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     },
     "node_modules/@rollup/rollup-freebsd-x64": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-freebsd-x64/-/rollup-freebsd-x64-4.50.2.tgz",
-      "integrity": "sha512-dkYXB0c2XAS3a3jmyDkX4Jk0m7gWLFzq1C3qUnJJ38AyxIF5G/dyS4N9B30nvFseCfgtCEdbYFhk0ChoCGxPog==",
+      "version": "4.52.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-freebsd-x64/-/rollup-freebsd-x64-4.52.3.tgz",
+      "integrity": "sha512-5M8kyi/OX96wtD5qJR89a/3x5x8x5inXBZO04JWhkQb2JWavOWfjgkdvUqibGJeNNaz1/Z1PPza5/tAPXICI6A==",
       "cpu": [
         "x64"
       ],
@@ -1223,9 +1223,9 @@
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     },
     "node_modules/@rollup/rollup-linux-arm-gnueabihf": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-gnueabihf/-/rollup-linux-arm-gnueabihf-4.50.2.tgz",
-      "integrity": "sha512-9VlPY/BN3AgbukfVHAB8zNFWB/lKEuvzRo1NKev0Po8sYFKx0i+AQlCYftgEjcL43F2h9Ui1ZSdVBc4En/sP2w==",
+      "version": "4.52.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-gnueabihf/-/rollup-linux-arm-gnueabihf-4.52.3.tgz",
+      "integrity": "sha512-IoerZJ4l1wRMopEHRKOO16e04iXRDyZFZnNZKrWeNquh5d6bucjezgd+OxG03mOMTnS1x7hilzb3uURPkJ0OfA==",
       "cpu": [
         "arm"
       ],
@@ -1237,9 +1237,9 @@
       ]
     },
     "node_modules/@rollup/rollup-linux-arm-musleabihf": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-musleabihf/-/rollup-linux-arm-musleabihf-4.50.2.tgz",
-      "integrity": "sha512-+GdKWOvsifaYNlIVf07QYan1J5F141+vGm5/Y8b9uCZnG/nxoGqgCmR24mv0koIWWuqvFYnbURRqw1lv7IBINw==",
+      "version": "4.52.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-musleabihf/-/rollup-linux-arm-musleabihf-4.52.3.tgz",
+      "integrity": "sha512-ZYdtqgHTDfvrJHSh3W22TvjWxwOgc3ThK/XjgcNGP2DIwFIPeAPNsQxrJO5XqleSlgDux2VAoWQ5iJrtaC1TbA==",
       "cpu": [
         "arm"
       ],
@@ -1251,9 +1251,9 @@
       ]
     },
     "node_modules/@rollup/rollup-linux-arm64-gnu": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-gnu/-/rollup-linux-arm64-gnu-4.50.2.tgz",
-      "integrity": "sha512-df0Eou14ojtUdLQdPFnymEQteENwSJAdLf5KCDrmZNsy1c3YaCNaJvYsEUHnrg+/DLBH612/R0xd3dD03uz2dg==",
+      "version": "4.52.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-gnu/-/rollup-linux-arm64-gnu-4.52.3.tgz",
+      "integrity": "sha512-NcViG7A0YtuFDA6xWSgmFb6iPFzHlf5vcqb2p0lGEbT+gjrEEz8nC/EeDHvx6mnGXnGCC1SeVV+8u+smj0CeGQ==",
       "cpu": [
         "arm64"
       ],
@@ -1265,9 +1265,9 @@
       ]
     },
     "node_modules/@rollup/rollup-linux-arm64-musl": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-musl/-/rollup-linux-arm64-musl-4.50.2.tgz",
-      "integrity": "sha512-iPeouV0UIDtz8j1YFR4OJ/zf7evjauqv7jQ/EFs0ClIyL+by++hiaDAfFipjOgyz6y6xbDvJuiU4HwpVMpRFDQ==",
+      "version": "4.52.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-musl/-/rollup-linux-arm64-musl-4.52.3.tgz",
+      "integrity": "sha512-d3pY7LWno6SYNXRm6Ebsq0DJGoiLXTb83AIPCXl9fmtIQs/rXoS8SJxxUNtFbJ5MiOvs+7y34np77+9l4nfFMw==",
       "cpu": [
         "arm64"
       ],
@@ -1279,9 +1279,9 @@
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     },
     "node_modules/@rollup/rollup-linux-loong64-gnu": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-loong64-gnu/-/rollup-linux-loong64-gnu-4.50.2.tgz",
-      "integrity": "sha512-OL6KaNvBopLlj5fTa5D5bau4W82f+1TyTZRr2BdnfsrnQnmdxh4okMxR2DcDkJuh4KeoQZVuvHvzuD/lyLn2Kw==",
+      "version": "4.52.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-loong64-gnu/-/rollup-linux-loong64-gnu-4.52.3.tgz",
+      "integrity": "sha512-3y5GA0JkBuirLqmjwAKwB0keDlI6JfGYduMlJD/Rl7fvb4Ni8iKdQs1eiunMZJhwDWdCvrcqXRY++VEBbvk6Eg==",
       "cpu": [
         "loong64"
       ],
@@ -1293,9 +1293,9 @@
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     },
     "node_modules/@rollup/rollup-linux-ppc64-gnu": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-ppc64-gnu/-/rollup-linux-ppc64-gnu-4.50.2.tgz",
-      "integrity": "sha512-I21VJl1w6z/K5OTRl6aS9DDsqezEZ/yKpbqlvfHbW0CEF5IL8ATBMuUx6/mp683rKTK8thjs/0BaNrZLXetLag==",
+      "version": "4.52.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-ppc64-gnu/-/rollup-linux-ppc64-gnu-4.52.3.tgz",
+      "integrity": "sha512-AUUH65a0p3Q0Yfm5oD2KVgzTKgwPyp9DSXc3UA7DtxhEb/WSPfbG4wqXeSN62OG5gSo18em4xv6dbfcUGXcagw==",
       "cpu": [
         "ppc64"
       ],
@@ -1307,9 +1307,9 @@
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     "node_modules/@rollup/rollup-linux-riscv64-gnu": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-riscv64-gnu/-/rollup-linux-riscv64-gnu-4.50.2.tgz",
-      "integrity": "sha512-Hq6aQJT/qFFHrYMjS20nV+9SKrXL2lvFBENZoKfoTH2kKDOJqff5OSJr4x72ZaG/uUn+XmBnGhfr4lwMRrmqCQ==",
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+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-riscv64-gnu/-/rollup-linux-riscv64-gnu-4.52.3.tgz",
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@@ -1321,9 +1321,9 @@
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     "node_modules/@rollup/rollup-linux-riscv64-musl": {
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-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-riscv64-musl/-/rollup-linux-riscv64-musl-4.50.2.tgz",
-      "integrity": "sha512-82rBSEXRv5qtKyr0xZ/YMF531oj2AIpLZkeNYxmKNN6I2sVE9PGegN99tYDLK2fYHJITL1P2Lgb4ZXnv0PjQvw==",
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+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-riscv64-musl/-/rollup-linux-riscv64-musl-4.52.3.tgz",
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@@ -1335,9 +1335,9 @@
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     "node_modules/@rollup/rollup-linux-s390x-gnu": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-s390x-gnu/-/rollup-linux-s390x-gnu-4.50.2.tgz",
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+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-s390x-gnu/-/rollup-linux-s390x-gnu-4.52.3.tgz",
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       "cpu": [
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@@ -1349,9 +1349,9 @@
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     "node_modules/@rollup/rollup-linux-x64-gnu": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-gnu/-/rollup-linux-x64-gnu-4.50.2.tgz",
-      "integrity": "sha512-9Jie/At6qk70dNIcopcL4p+1UirusEtznpNtcq/u/C5cC4HBX7qSGsYIcG6bdxj15EYWhHiu02YvmdPzylIZlA==",
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+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-gnu/-/rollup-linux-x64-gnu-4.52.3.tgz",
+      "integrity": "sha512-tPgGd6bY2M2LJTA1uGq8fkSPK8ZLYjDjY+ZLK9WHncCnfIz29LIXIqUgzCR0hIefzy6Hpbe8Th5WOSwTM8E7LA==",
       "cpu": [
         "x64"
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@@ -1363,9 +1363,9 @@
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     "node_modules/@rollup/rollup-linux-x64-musl": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-musl/-/rollup-linux-x64-musl-4.50.2.tgz",
-      "integrity": "sha512-HPNJwxPL3EmhzeAnsWQCM3DcoqOz3/IC6de9rWfGR8ZCuEHETi9km66bH/wG3YH0V3nyzyFEGUZeL5PKyy4xvw==",
+      "version": "4.52.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-musl/-/rollup-linux-x64-musl-4.52.3.tgz",
+      "integrity": "sha512-BCFkJjgk+WFzP+tcSMXq77ymAPIxsX9lFJWs+2JzuZTLtksJ2o5hvgTdIcZ5+oKzUDMwI0PfWzRBYAydAHF2Mw==",
       "cpu": [
         "x64"
       ],
@@ -1377,9 +1377,9 @@
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     },
     "node_modules/@rollup/rollup-openharmony-arm64": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-openharmony-arm64/-/rollup-openharmony-arm64-4.50.2.tgz",
-      "integrity": "sha512-nMKvq6FRHSzYfKLHZ+cChowlEkR2lj/V0jYj9JnGUVPL2/mIeFGmVM2mLaFeNa5Jev7W7TovXqXIG2d39y1KYA==",
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       "cpu": [
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@@ -1391,9 +1391,9 @@
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     "node_modules/@rollup/rollup-win32-arm64-msvc": {
-      "version": "4.50.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-arm64-msvc/-/rollup-win32-arm64-msvc-4.50.2.tgz",
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@@ -1405,9 +1405,9 @@
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     "node_modules/@rollup/rollup-win32-ia32-msvc": {
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-      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-ia32-msvc/-/rollup-win32-ia32-msvc-4.50.2.tgz",
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       "cpu": [
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@@ -1418,10 +1418,24 @@
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     },
+    "node_modules/@rollup/rollup-win32-x64-gnu": {
+      "version": "4.52.3",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-x64-gnu/-/rollup-win32-x64-gnu-4.52.3.tgz",
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+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "win32"
+      ]
+    },
     "node_modules/@rollup/rollup-win32-x64-msvc": {
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-      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-x64-msvc/-/rollup-win32-x64-msvc-4.50.2.tgz",
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