diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index b568f9c35..af6c62f48 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "5.10.3"
+  ".": "5.11.0"
 }
diff --git a/.stats.yml b/.stats.yml
index 2dc4f680a..e7fb0bdf9 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 111
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/openai%2Fopenai-b2a451656ca64d30d174391ebfd94806b4de3ab76dc55b92843cfb7f1a54ecb6.yml
-openapi_spec_hash: 27d9691b400f28c17ef063a1374048b0
-config_hash: e822d0c9082c8b312264403949243179
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/openai%2Fopenai-721e6ccaa72205ee14c71f8163129920464fb814b95d3df9567a9476bbd9b7fb.yml
+openapi_spec_hash: 2115413a21df8b5bf9e4552a74df4312
+config_hash: 9606bb315a193bfd8da0459040143242
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a032aec2f..65a65b081 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 5.11.0 (2025-07-30)
+
+Full Changelog: [v5.10.3...v5.11.0](https://github.com/openai/openai-node/compare/v5.10.3...v5.11.0)
+
+### Features
+
+* **api:** manual updates ([442dc25](https://github.com/openai/openai-node/commit/442dc25d7b31a374daf440f32f5694c3b6c20a81))
+
 ## 5.10.3 (2025-07-30)
 
 Full Changelog: [v5.10.2...v5.10.3](https://github.com/openai/openai-node/compare/v5.10.2...v5.10.3)
diff --git a/jsr.json b/jsr.json
index 6caa6f324..b37729662 100644
--- a/jsr.json
+++ b/jsr.json
@@ -1,6 +1,6 @@
 {
   "name": "@openai/openai",
-  "version": "5.10.3",
+  "version": "5.11.0",
   "exports": {
     ".": "./index.ts",
     "./helpers/zod": "./helpers/zod.ts",
diff --git a/package.json b/package.json
index c105bfb99..437369312 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "openai",
-  "version": "5.10.3",
+  "version": "5.11.0",
   "description": "The official TypeScript library for the OpenAI API",
   "author": "OpenAI <support@openai.com>",
   "types": "dist/index.d.ts",
diff --git a/src/resources/chat/completions/completions.ts b/src/resources/chat/completions/completions.ts
index 88d4249b4..494e8a59c 100644
--- a/src/resources/chat/completions/completions.ts
+++ b/src/resources/chat/completions/completions.ts
@@ -1089,6 +1089,12 @@ export interface ChatCompletionStoreMessage extends ChatCompletionMessage {
    * The identifier of the chat message.
    */
   id: string;
+
+  /**
+   * If a content parts array was provided, this is an array of `text` and
+   * `image_url` parts. Otherwise, null.
+   */
+  content_parts?: Array<ChatCompletionContentPartText | ChatCompletionContentPartImage> | null;
 }
 
 /**
@@ -1397,6 +1403,13 @@ export interface ChatCompletionCreateParamsBase {
    */
   presence_penalty?: number | null;
 
+  /**
+   * Used by OpenAI to cache responses for similar requests to optimize your cache
+   * hit rates. Replaces the `user` field.
+   * [Learn more](https://platform.openai.com/docs/guides/prompt-caching).
+   */
+  prompt_cache_key?: string;
+
   /**
    * **o-series models only**
    *
@@ -1424,6 +1437,15 @@ export interface ChatCompletionCreateParamsBase {
     | Shared.ResponseFormatJSONSchema
     | Shared.ResponseFormatJSONObject;
 
+  /**
+   * A stable identifier used to help detect users of your application that may be
+   * violating OpenAI's usage policies. The IDs should be a string that uniquely
+   * identifies each user. We recommend hashing their username or email address, in
+   * order to avoid sending us any identifying information.
+   * [Learn more](https://platform.openai.com/docs/guides/safety-best-practices#safety-identifiers).
+   */
+  safety_identifier?: string;
+
   /**
    * This feature is in Beta. If specified, our system will make a best effort to
    * sample deterministically, such that repeated requests with the same `seed` and
@@ -1533,9 +1555,12 @@ export interface ChatCompletionCreateParamsBase {
   top_p?: number | null;
 
   /**
-   * A stable identifier for your end-users. Used to boost cache hit rates by better
-   * bucketing similar requests and to help OpenAI detect and prevent abuse.
-   * [Learn more](https://platform.openai.com/docs/guides/safety-best-practices#end-user-ids).
+   * @deprecated This field is being replaced by `safety_identifier` and
+   * `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching
+   * optimizations. A stable identifier for your end-users. Used to boost cache hit
+   * rates by better bucketing similar requests and to help OpenAI detect and prevent
+   * abuse.
+   * [Learn more](https://platform.openai.com/docs/guides/safety-best-practices#safety-identifiers).
    */
   user?: string;
 
diff --git a/src/resources/responses/responses.ts b/src/resources/responses/responses.ts
index ba1447432..86b0adafa 100644
--- a/src/resources/responses/responses.ts
+++ b/src/resources/responses/responses.ts
@@ -479,6 +479,13 @@ export interface Response {
    */
   prompt?: ResponsePrompt | null;
 
+  /**
+   * Used by OpenAI to cache responses for similar requests to optimize your cache
+   * hit rates. Replaces the `user` field.
+   * [Learn more](https://platform.openai.com/docs/guides/prompt-caching).
+   */
+  prompt_cache_key?: string;
+
   /**
    * **o-series models only**
    *
@@ -487,6 +494,15 @@ export interface Response {
    */
   reasoning?: Shared.Reasoning | null;
 
+  /**
+   * A stable identifier used to help detect users of your application that may be
+   * violating OpenAI's usage policies. The IDs should be a string that uniquely
+   * identifies each user. We recommend hashing their username or email address, in
+   * order to avoid sending us any identifying information.
+   * [Learn more](https://platform.openai.com/docs/guides/safety-best-practices#safety-identifiers).
+   */
+  safety_identifier?: string;
+
   /**
    * Specifies the latency tier to use for processing the request. This parameter is
    * relevant for customers subscribed to the scale tier service:
@@ -540,9 +556,12 @@ export interface Response {
   usage?: ResponseUsage;
 
   /**
-   * A stable identifier for your end-users. Used to boost cache hit rates by better
-   * bucketing similar requests and to help OpenAI detect and prevent abuse.
-   * [Learn more](https://platform.openai.com/docs/guides/safety-best-practices#end-user-ids).
+   * @deprecated This field is being replaced by `safety_identifier` and
+   * `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching
+   * optimizations. A stable identifier for your end-users. Used to boost cache hit
+   * rates by better bucketing similar requests and to help OpenAI detect and prevent
+   * abuse.
+   * [Learn more](https://platform.openai.com/docs/guides/safety-best-practices#safety-identifiers).
    */
   user?: string;
 }
@@ -4836,6 +4855,13 @@ export interface ResponseCreateParamsBase {
    */
   prompt?: ResponsePrompt | null;
 
+  /**
+   * Used by OpenAI to cache responses for similar requests to optimize your cache
+   * hit rates. Replaces the `user` field.
+   * [Learn more](https://platform.openai.com/docs/guides/prompt-caching).
+   */
+  prompt_cache_key?: string;
+
   /**
    * **o-series models only**
    *
@@ -4844,6 +4870,15 @@ export interface ResponseCreateParamsBase {
    */
   reasoning?: Shared.Reasoning | null;
 
+  /**
+   * A stable identifier used to help detect users of your application that may be
+   * violating OpenAI's usage policies. The IDs should be a string that uniquely
+   * identifies each user. We recommend hashing their username or email address, in
+   * order to avoid sending us any identifying information.
+   * [Learn more](https://platform.openai.com/docs/guides/safety-best-practices#safety-identifiers).
+   */
+  safety_identifier?: string;
+
   /**
    * Specifies the latency tier to use for processing the request. This parameter is
    * relevant for customers subscribed to the scale tier service:
@@ -4942,9 +4977,12 @@ export interface ResponseCreateParamsBase {
   truncation?: 'auto' | 'disabled' | null;
 
   /**
-   * A stable identifier for your end-users. Used to boost cache hit rates by better
-   * bucketing similar requests and to help OpenAI detect and prevent abuse.
-   * [Learn more](https://platform.openai.com/docs/guides/safety-best-practices#end-user-ids).
+   * @deprecated This field is being replaced by `safety_identifier` and
+   * `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching
+   * optimizations. A stable identifier for your end-users. Used to boost cache hit
+   * rates by better bucketing similar requests and to help OpenAI detect and prevent
+   * abuse.
+   * [Learn more](https://platform.openai.com/docs/guides/safety-best-practices#safety-identifiers).
    */
   user?: string;
 }
diff --git a/src/version.ts b/src/version.ts
index fe8db97ec..5c2d9a751 100644
--- a/src/version.ts
+++ b/src/version.ts
@@ -1 +1 @@
-export const VERSION = '5.10.3'; // x-release-please-version
+export const VERSION = '5.11.0'; // x-release-please-version
diff --git a/tests/api-resources/chat/completions/completions.test.ts b/tests/api-resources/chat/completions/completions.test.ts
index b593ab4eb..6869136a5 100644
--- a/tests/api-resources/chat/completions/completions.test.ts
+++ b/tests/api-resources/chat/completions/completions.test.ts
@@ -40,8 +40,10 @@ describe('resource completions', () => {
       parallel_tool_calls: true,
       prediction: { content: 'string', type: 'content' },
       presence_penalty: -2,
+      prompt_cache_key: 'prompt-cache-key-1234',
       reasoning_effort: 'low',
       response_format: { type: 'text' },
+      safety_identifier: 'safety-identifier-1234',
       seed: -9007199254740991,
       service_tier: 'auto',
       stop: '\n',