diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 940f2ca3e1..faa0df4ef5 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "3.11.0"
+  ".": "3.12.0"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 25094f60e8..e126d8cd1a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,19 @@
 # Changelog
 
+## [3.12.0](https://github.com/openai/openai-python/compare/v3.11.0...v3.12.0) (2026-09-10)
+
+
+### Features
+
+* **api:** Add Live API ([0e4bfef](https://github.com/openai/openai-python/commit/0e4bfef9c79251fcf4926fd732129627bde050f1))
+
+
+### Bug Fixes
+
+* add aclose() to AsyncStream for standard async cleanup ([#2854](https://github.com/openai/openai-python/issues/2854)) ([802b334](https://github.com/openai/openai-python/commit/802b334928d8f0c3e24e5fce15a0eaa1b28c61cd))
+* handle bare `dict` and `list` annotations without type arguments ([#3760](https://github.com/openai/openai-python/issues/3760)) ([c7e8c03](https://github.com/openai/openai-python/commit/c7e8c03e2d87708ef233d0db00167dfa339325a9))
+* preserve finalized output on null response completion ([#3345](https://github.com/openai/openai-python/issues/3345)) ([adb212e](https://github.com/openai/openai-python/commit/adb212e116323fcec4b4811d20ba9eb78280c24c))
+
 ## [3.11.0](https://github.com/openai/openai-python/compare/v3.10.0...v3.11.0) (2026-09-09)
 
 
diff --git a/pyproject.toml b/pyproject.toml
index e0ece9a922..1f522e4d2e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "openai"
-version = "3.11.0"
+version = "3.12.0"
 description = "The official Python library for the openai API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/openai/_version.py b/src/openai/_version.py
index 00df9f346f..aceb6739b4 100644
--- a/src/openai/_version.py
+++ b/src/openai/_version.py
@@ -1,2 +1,2 @@
 __title__ = "openai"
-__version__ = "3.11.0"  # x-release-please-version
+__version__ = "3.12.0"  # x-release-please-version
diff --git a/uv.lock b/uv.lock
index 376a081dfc..207d803ff1 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1524,7 +1524,7 @@ wheels = [
 
 [[package]]
 name = "openai"
-version = "3.11.0" # x-release-please-version
+version = "3.12.0" # x-release-please-version
 source = { editable = "." }
 dependencies = [
     { name = "anyio" },