diff --git a/.castiron.stats.yml b/.castiron.stats.yml
index bab06c97f5..d1755b48aa 100644
--- a/.castiron.stats.yml
+++ b/.castiron.stats.yml
@@ -1,8 +1,8 @@
 schema_version: 1
-generation_id: cec0794a-44bb-431c-b91c-32bbcf798980
-openapi_spec_hash: a7dcb5a78f21ffdb756ac4bbe0b8a227
-openapi_transformed_spec_hash: da855097c89cd19cdb576823a15b0481
+generation_id: dd7765a4-3f6a-4a04-aaca-19aaa7507cdd
+openapi_spec_hash: 051ddca625ac3b40a3f9d7687ff56386
+openapi_transformed_spec_hash: da601ee105aa5acf0deebbb9b3d87b8e
 config_hash: a9d68fc59815e9884d653f40d0c9cc15
-codegen_sha: 82f70fc38cea881d2702056442d49bd401e6a181
-codegen_hash: 9faf3e77625fc5caccdf324dfd3f099f54178b901026cca8d6e1a558d16b19ff
-public_codegen_sha: d0df48b54e26bd50035e182ba2c03a990d728f9e
+codegen_sha: 0048f2a7447c3cfe8d0198e0d7549c378e4bf08f
+codegen_hash: a7aa886594dd13f43e180a8516000bdf96481ed147ba52f0f2def6e243bb03b5
+public_codegen_sha: f99cb5bb5fc87965058d7055e382a25d1d064bcc
diff --git a/api_reference/openapi.transformed.yml b/api_reference/openapi.transformed.yml
index 7151a1b461..11d7f2cbb8 100644
--- a/api_reference/openapi.transformed.yml
+++ b/api_reference/openapi.transformed.yml
@@ -12812,10 +12812,12 @@ paths:
       - AdminApiKeyAuth: []
       summary: Delete project API key
       description: |
-        Deletes an API key from the project.
+        Deletes an API key from the project, including keys owned by service accounts.
 
-        Returns confirmation of the key deletion, or an error if the key belonged to
-        a service account.
+        Requires permission to write project API keys. Deleting a service-account key
+        does not delete the service account or its other keys.
+
+        Returns confirmation of the key deletion.
       operationId: delete-project-api-key
       tags:
       - Projects
@@ -27625,12 +27627,6 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
-        '409':
-          description: The service account already has an API key and cannot create another.
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/ErrorResponse'
         '429':
           description: Too many management requests. Reduce the request rate and try again later.
           content:
diff --git a/scripts/castiron/generated-files.json b/scripts/castiron/generated-files.json
index c2fd3d5680..cba37ab70f 100644
--- a/scripts/castiron/generated-files.json
+++ b/scripts/castiron/generated-files.json
@@ -7,7 +7,7 @@
     },
     ".github/workflows/castiron-custom-code.yml": {
       "mode": "100644",
-      "sha256": "f27d44cbe8caa54c1a41af4c55b2b909ae465a12982cb5a32d49deaa44ef3912"
+      "sha256": "ccd67760a8cfcc17ebdf5c8df7e330ee7be5199cb62232afdf9035fea68bbc2f"
     },
     "api.md": {
       "mode": "100644",
@@ -23,11 +23,11 @@
     },
     "scripts/castiron/custom_code_budget.py": {
       "mode": "100755",
-      "sha256": "31b47b2c85fc7ef483c18a94f0725e4f6bae50164c427330af6d081d5d3f31f2"
+      "sha256": "e6f19706c26f9b996f7d6d5f8a654e54fbc8c49a5d2fce045c1996b119feee33"
     },
     "scripts/castiron/custom_code_report.py": {
       "mode": "100755",
-      "sha256": "6b7cfda1f85426daaa2e4f6186e2d1b20ac638dadaa54be8142ecec89fefd880"
+      "sha256": "157ed30ac9d54d20fe5f7e625dc8ee5958beb91cc7e30aaa97cfba8fb3e06e21"
     },
     "scripts/castiron/custom_code_test_support.py": {
       "mode": "100644",
@@ -55,7 +55,7 @@
     },
     "scripts/castiron/test_custom_code_report.py": {
       "mode": "100644",
-      "sha256": "4a084ae9fb53897fa260b22baae4ef8a0662ff5f92b5efaaf49f3ec8953949bd"
+      "sha256": "5c17ac9b5596e7f69aaefe3f29615cdac425323594854a91e1759c88d92a68bb"
     },
     "src/openai/__init__.py": {
       "mode": "100644",
@@ -143,7 +143,7 @@
     },
     "src/openai/resources/admin/organization/projects/api_keys.py": {
       "mode": "100644",
-      "sha256": "336acfc7f5e1a1fb8b522db2fbb217d78f04c12e5c872d12291c161f3599b165"
+      "sha256": "6b916777096940e6ba31445cd42be1aee77b9e9201d950a58a8c93232fb715be"
     },
     "src/openai/resources/admin/organization/projects/certificates.py": {
       "mode": "100644",
@@ -415,7 +415,7 @@
     },
     "src/openai/resources/beta/responses/responses.py": {
       "mode": "100644",
-      "sha256": "06695dc41af2cd645f7c29921cbd6addef28c10dde118112bcca171a5a218275"
+      "sha256": "e631b84ca7b00615a9e2f232d45747ec39f284ffa1ceb71517032e969bb386bb"
     },
     "src/openai/resources/beta/threads/__init__.py": {
       "mode": "100644",
@@ -595,11 +595,11 @@
     },
     "src/openai/resources/live/forks.py": {
       "mode": "100644",
-      "sha256": "21884921a1b65b4c1fcf1a520b4e433c1548f433810caa0aaec6ae5130897389"
+      "sha256": "440a44366c6896286b95c398b2ea98f34844600af22513e9ebbe8ca497556d90"
     },
     "src/openai/resources/live/live.py": {
       "mode": "100644",
-      "sha256": "ec86c0a3868d736b4ab8586ea60bd736c14adaadfcd1d198099f3ca4229742f5"
+      "sha256": "f1ae78c0bffef766fbb859f1a9ffb307bcbab646b9da2d741099449914f9a42a"
     },
     "src/openai/resources/live/sessions.py": {
       "mode": "100644",
@@ -607,7 +607,7 @@
     },
     "src/openai/resources/live/sideband.py": {
       "mode": "100644",
-      "sha256": "7db3998d437169ca2437c8deb4cc047ee3148e6ec747d87d0b9c86ad2c9ee2cf"
+      "sha256": "486f51b77fea40ab0f6393d0aa01b083aefff9fa2ba8e9c076e4757a10d7ab3a"
     },
     "src/openai/resources/models.py": {
       "mode": "100644",
@@ -635,7 +635,7 @@
     },
     "src/openai/resources/realtime/realtime.py": {
       "mode": "100644",
-      "sha256": "acef2fd152ecca0c65ad82a42999ad2492d99cf49d2a91f8e905d61732d1560e"
+      "sha256": "a1af3c8791a4f29b66e3401348b6c6dea6dc658a8a6bb88843cdb30b4626119c"
     },
     "src/openai/resources/realtime/translations/__init__.py": {
       "mode": "100644",
@@ -647,7 +647,7 @@
     },
     "src/openai/resources/realtime/translations/translations.py": {
       "mode": "100644",
-      "sha256": "13f68331c7ac59780d6db2d4b5af79b92d6df43407fbc798add158a6d900d2ed"
+      "sha256": "c34a5218f753a120602bb7cca62073ee032091155e22886c9f633dfcf1263cac"
     },
     "src/openai/resources/responses/__init__.py": {
       "mode": "100644",
@@ -667,7 +667,7 @@
     },
     "src/openai/resources/responses/responses.py": {
       "mode": "100644",
-      "sha256": "0b7c2ee504b7adb0f8bfbd16c91ee9de05a535f879708c57ffc33dde94ca4fa1"
+      "sha256": "2239f2e9fe19aa019d2580a0f74a5d2efcedc2c284650ee1c2567af334a045e6"
     },
     "src/openai/resources/safety/__init__.py": {
       "mode": "100644",
@@ -759,7 +759,7 @@
     },
     "src/openai/types/__init__.py": {
       "mode": "100644",
-      "sha256": "47c98e4ffd0eb3a28a9d60b78facf0bdd165d6d35b24ebb6bea5834a0165eeea"
+      "sha256": "5caaa29a79510a0a3e4a92f7b59d3ccb3f8f6651706f658738cb5e2a22b91481"
     },
     "src/openai/types/admin/__init__.py": {
       "mode": "100644",
diff --git a/src/openai/resources/admin/organization/projects/api_keys.py b/src/openai/resources/admin/organization/projects/api_keys.py
index ff5fc32dd5..604ff4be24 100644
--- a/src/openai/resources/admin/organization/projects/api_keys.py
+++ b/src/openai/resources/admin/organization/projects/api_keys.py
@@ -242,10 +242,12 @@ def delete(
         timeout: float | httpx2.Timeout | None | NotGiven = not_given,
     ) -> APIKeyDeleteResponse:
         """
-        Deletes an API key from the project.
+        Deletes an API key from the project, including keys owned by service accounts.
 
-        Returns confirmation of the key deletion, or an error if the key belonged to a
-        service account.
+        Requires permission to write project API keys. Deleting a service-account key
+        does not delete the service account or its other keys.
+
+        Returns confirmation of the key deletion.
 
         Args:
           extra_headers: Send extra headers
@@ -498,10 +500,12 @@ async def delete(
         timeout: float | httpx2.Timeout | None | NotGiven = not_given,
     ) -> APIKeyDeleteResponse:
         """
-        Deletes an API key from the project.
+        Deletes an API key from the project, including keys owned by service accounts.
+
+        Requires permission to write project API keys. Deleting a service-account key
+        does not delete the service account or its other keys.
 
-        Returns confirmation of the key deletion, or an error if the key belonged to a
-        service account.
+        Returns confirmation of the key deletion.
 
         Args:
           extra_headers: Send extra headers