diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 331e83616..3bf4c163c 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "4.56.0"
+  ".": "4.57.0"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e01e79405..5dcf9c82b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [4.57.0](https://github.com/openai/openai-java/compare/v4.56.0...v4.57.0) (2026-09-03)
+
+
+### Features
+
+* **api:** add gpt-6-astra and related features ([#969](https://github.com/openai/openai-java/issues/969)) ([39f1715](https://github.com/openai/openai-java/commit/39f1715c67c0138727bfde55ddb02317b3784ad7))
+
 ## [4.56.0](https://github.com/openai/openai-java/compare/v4.55.0...v4.56.0) (2026-09-02)
 
 
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f593cdef3..84e4d0a08 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -114,14 +114,14 @@ Then in your project's `build.gradle.kts` or `pom.xml`, reference the locally pu
 <!-- x-release-please-start-version -->
 
 ```kotlin
-implementation("com.openai:openai-java:4.56.0")
+implementation("com.openai:openai-java:4.57.0")
 ```
 
 ```xml
 <dependency>
   <groupId>com.openai</groupId>
   <artifactId>openai-java</artifactId>
-  <version>4.56.0</version>
+  <version>4.57.0</version>
 </dependency>
 ```
 
diff --git a/README.md b/README.md
index 86982cfb1..003fa4ebd 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ The REST API documentation can be found on [platform.openai.com](https://platfor
 ### Gradle
 
 ```kotlin
-implementation("com.openai:openai-java:4.56.0")
+implementation("com.openai:openai-java:4.57.0")
 ```
 
 ### Maven
@@ -24,7 +24,7 @@ implementation("com.openai:openai-java:4.56.0")
 <dependency>
   <groupId>com.openai</groupId>
   <artifactId>openai-java</artifactId>
-  <version>4.56.0</version>
+  <version>4.57.0</version>
 </dependency>
 ```
 
@@ -87,7 +87,7 @@ with normal AWS credentials:
 <!-- x-release-please-start-version -->
 
 ```kotlin
-implementation("com.openai:openai-java-bedrock:4.56.0")
+implementation("com.openai:openai-java-bedrock:4.57.0")
 ```
 
 <!-- x-release-please-end -->
diff --git a/bedrock.md b/bedrock.md
index 56a70f7d8..ec0917c86 100644
--- a/bedrock.md
+++ b/bedrock.md
@@ -12,14 +12,14 @@ Use this artifact instead of adding AWS dependencies to the base OpenAI package
 <!-- x-release-please-start-version -->
 
 ```kotlin
-implementation("com.openai:openai-java-bedrock:4.56.0")
+implementation("com.openai:openai-java-bedrock:4.57.0")
 ```
 
 ```xml
 <dependency>
   <groupId>com.openai</groupId>
   <artifactId>openai-java-bedrock</artifactId>
-  <version>4.56.0</version>
+  <version>4.57.0</version>
 </dependency>
 ```
 
diff --git a/build.gradle.kts b/build.gradle.kts
index 62555ba49..0fbd5bf30 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -47,7 +47,7 @@ repositories {
 
 allprojects {
     group = "com.openai"
-    version = "4.56.0" // x-release-please-version
+    version = "4.57.0" // x-release-please-version
 
     // Dokka 2.1.0 depends on Jackson 2.15.3 and jsoup 1.16.1. Keep its isolated build-tool
     // classpaths on secure versions without changing the SDK's published or compatibility-test