diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 7c53a1b7c..dc9637221 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "6.9.0"
+  ".": "6.9.1"
 }
diff --git a/.stats.yml b/.stats.yml
index 38f260dd9..d15659c79 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 135
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/openai%2Fopenai-ca24bc4d8125b5153514ce643c4e3220f25971b7d67ca384d56d493c72c0d977.yml
-openapi_spec_hash: c6f048c7b3d29f4de48fde0e845ba33f
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/openai%2Fopenai-a7e92d12ebe89ca019a7ac5b29759064eefa2c38fe08d03516f2620e66abb32b.yml
+openapi_spec_hash: acbc703b2739447abc6312b2d753631c
 config_hash: b876221dfb213df9f0a999e75d38a65e
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 027db0155..4ab65dc65 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 6.9.1 (2025-11-17)
+
+Full Changelog: [v6.9.0...v6.9.1](https://github.com/openai/openai-node/compare/v6.9.0...v6.9.1)
+
+### Bug Fixes
+
+* **api:** align types of input items / output items for typescript ([99adaa7](https://github.com/openai/openai-node/commit/99adaa70dc31d07d5c7fa4d67194ac4de375c98f))
+
 ## 6.9.0 (2025-11-13)
 
 Full Changelog: [v6.8.1...v6.9.0](https://github.com/openai/openai-node/compare/v6.8.1...v6.9.0)
diff --git a/jsr.json b/jsr.json
index eb46274a9..e7d50a492 100644
--- a/jsr.json
+++ b/jsr.json
@@ -1,6 +1,6 @@
 {
   "name": "@openai/openai",
-  "version": "6.9.0",
+  "version": "6.9.1",
   "exports": {
     ".": "./index.ts",
     "./helpers/zod": "./helpers/zod.ts",
diff --git a/package.json b/package.json
index 5a7ef2e68..e34815dd0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "openai",
-  "version": "6.9.0",
+  "version": "6.9.1",
   "description": "The official TypeScript library for the OpenAI API",
   "author": "OpenAI <support@openai.com>",
   "types": "dist/index.d.ts",
diff --git a/src/helpers/zod.ts b/src/helpers/zod.ts
index 4225e0759..400b448fd 100644
--- a/src/helpers/zod.ts
+++ b/src/helpers/zod.ts
@@ -1,6 +1,6 @@
 import { ResponseFormatJSONSchema } from '../resources/index';
-import { z as z3 } from 'zod/v3';
-import { z as z4 } from 'zod/v4';
+import * as z3 from 'zod/v3';
+import * as z4 from 'zod/v4';
 import {
   AutoParseableResponseFormat,
   AutoParseableTextFormat,
diff --git a/src/resources/responses/responses.ts b/src/resources/responses/responses.ts
index 374744cbc..c60c2cce9 100644
--- a/src/resources/responses/responses.ts
+++ b/src/resources/responses/responses.ts
@@ -709,6 +709,15 @@ export interface ResponseApplyPatchToolCall {
    */
   call_id: string;
 
+  /**
+   * One of the create_file, delete_file, or update_file operations applied via
+   * apply_patch.
+   */
+  operation:
+    | ResponseApplyPatchToolCall.CreateFile
+    | ResponseApplyPatchToolCall.DeleteFile
+    | ResponseApplyPatchToolCall.UpdateFile;
+
   /**
    * The status of the apply patch tool call. One of `in_progress` or `completed`.
    */
@@ -723,15 +732,6 @@ export interface ResponseApplyPatchToolCall {
    * The ID of the entity that created this tool call.
    */
   created_by?: string;
-
-  /**
-   * One of the create_file, delete_file, or update_file operations applied via
-   * apply_patch.
-   */
-  operation?:
-    | ResponseApplyPatchToolCall.CreateFile
-    | ResponseApplyPatchToolCall.DeleteFile
-    | ResponseApplyPatchToolCall.UpdateFile;
 }
 
 export namespace ResponseApplyPatchToolCall {
@@ -806,11 +806,6 @@ export interface ResponseApplyPatchToolCallOutput {
    */
   call_id: string;
 
-  /**
-   * Optional textual output returned by the apply patch tool.
-   */
-  output: string | null;
-
   /**
    * The status of the apply patch tool call output. One of `completed` or `failed`.
    */
@@ -825,6 +820,11 @@ export interface ResponseApplyPatchToolCallOutput {
    * The ID of the entity that created this tool call output.
    */
   created_by?: string;
+
+  /**
+   * Optional textual output returned by the apply patch tool.
+   */
+  output?: string | null;
 }
 
 /**
@@ -3275,7 +3275,7 @@ export namespace ResponseInputItem {
      * Optional human-readable log text from the apply patch tool (e.g., patch results
      * or errors).
      */
-    output?: string;
+    output?: string | null;
   }
 
   /**
diff --git a/src/version.ts b/src/version.ts
index a56dd5aa4..5f4659264 100644
--- a/src/version.ts
+++ b/src/version.ts
@@ -1 +1 @@
-export const VERSION = '6.9.0'; // x-release-please-version
+export const VERSION = '6.9.1'; // x-release-please-version
diff --git a/tests/responsesItems.test.ts b/tests/responsesItems.test.ts
new file mode 100644
index 000000000..84853fcf3
--- /dev/null
+++ b/tests/responsesItems.test.ts
@@ -0,0 +1,21 @@
+import OpenAI from 'openai/index';
+const openai = new OpenAI({ apiKey: 'example-api-key' });
+
+describe('responses item types', () => {
+  test('response output items are compatible with input items', async () => {
+    expect(true).toBe(true);
+  });
+});
+
+const unused = async () => {
+  const response = await openai.responses.create({
+    model: 'gpt-5.1',
+    input: 'You are a helpful assistant.',
+  });
+  await openai.responses.create({
+    model: 'gpt-5.1',
+    // check type compatibility
+    input: response.output,
+  });
+  expect(true).toBe(true);
+};