release: 3.9.0

Author: stainless-app[bot]

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "3.8.1"
+  ".": "3.9.0"
 }

CHANGELOG.md

@@ -1,5 +1,23 @@
 # Changelog
 
+## 3.9.0 (2025-11-18)
+
+Full Changelog: [v3.8.1...v3.9.0](https://github.com/openai/openai-go/compare/v3.8.1...v3.9.0)
+
+### Features
+
+* **api:** gpt 5.1 ([470f91f](https://github.com/openai/openai-go/commit/470f91faac304e518019be9f7b12e6270af63bbd))
+
+
+### Bug Fixes
+
+* **api:** align types of input items / output items for typescript ([5b89d3b](https://github.com/openai/openai-go/commit/5b89d3ba03968ee9f5b49e7e065495c3c5c77710))
+
+
+### Chores
+
+* bump gjson version ([305831f](https://github.com/openai/openai-go/commit/305831feb6c39d1f9f6e85c2e9f94f6c7f0dcd45))
+
 ## 3.8.1 (2025-11-04)
 
 Full Changelog: [v3.8.0...v3.8.1](https://github.com/openai/openai-go/compare/v3.8.0...v3.8.1)

README.md

@@ -30,7 +30,7 @@ Or to pin the version:
 <!-- x-release-please-start-version -->
 
 ```sh
-go get -u 'github.com/openai/openai-go/v2@v3.8.1'
+go get -u 'github.com/openai/openai-go/v2@v3.9.0'
 ```
 
 <!-- x-release-please-end -->

internal/version.go

@@ -2,4 +2,4 @@
 
 package internal
 
-const PackageVersion = "3.8.1" // x-release-please-version
+const PackageVersion = "3.9.0" // x-release-please-version