diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index f2d171b4b..4caf2c18e 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.11.8"
+  ".": "0.11.9"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a7282ff3a..63e8743aa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.11.9 (2025-01-21)
+
+Full Changelog: [v0.11.8...v0.11.9](https://github.com/openai/openai-java/compare/v0.11.8...v0.11.9)
+
+### Bug Fixes
+
+* **client:** make service impl constructors internal ([#141](https://github.com/openai/openai-java/issues/141)) ([da35557](https://github.com/openai/openai-java/commit/da35557895e233dd5e490e139043faad92173782))
+
 ## 0.11.8 (2025-01-17)
 
 Full Changelog: [v0.11.7...v0.11.8](https://github.com/openai/openai-java/compare/v0.11.7...v0.11.8)
diff --git a/README.md b/README.md
index 5595efcc9..f431a4eb5 100644
--- a/README.md
+++ b/README.md
@@ -9,8 +9,8 @@
 
 <!-- x-release-please-start-version -->
 
-[![Maven Central](https://img.shields.io/maven-central/v/com.openai/openai-java)](https://central.sonatype.com/artifact/com.openai/openai-java/0.11.8)
-[![javadoc](https://javadoc.io/badge2/com.openai/openai-java/0.11.8/javadoc.svg)](https://javadoc.io/doc/com.openai/openai-java/0.11.8)
+[![Maven Central](https://img.shields.io/maven-central/v/com.openai/openai-java)](https://central.sonatype.com/artifact/com.openai/openai-java/0.11.9)
+[![javadoc](https://javadoc.io/badge2/com.openai/openai-java/0.11.9/javadoc.svg)](https://javadoc.io/doc/com.openai/openai-java/0.11.8)
 
 <!-- x-release-please-end -->
 
@@ -31,7 +31,7 @@ The REST API documentation can be found on [platform.openai.com](https://platfo
 <!-- x-release-please-start-version -->
 
 ```kotlin
-implementation("com.openai:openai-java:0.11.8")
+implementation("com.openai:openai-java:0.11.9")
 ```
 
 #### Maven
@@ -40,7 +40,7 @@ implementation("com.openai:openai-java:0.11.8")
 <dependency>
     <groupId>com.openai</groupId>
     <artifactId>openai-java</artifactId>
-    <version>0.11.8</version>
+    <version>0.11.9</version>
 </dependency>
 ```
 
diff --git a/build.gradle.kts b/build.gradle.kts
index 284dede07..222387ad2 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -8,7 +8,7 @@ repositories {
 
 allprojects {
     group = "com.openai"
-    version = "0.11.8" // x-release-please-version
+    version = "0.11.9" // x-release-please-version
 }
 
 subprojects {
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/BatchServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/BatchServiceAsyncImpl.kt
index 15c87d1b5..62cf3eff3 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/BatchServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/BatchServiceAsyncImpl.kt
@@ -21,7 +21,7 @@ import com.openai.models.BatchRetrieveParams
 import java.util.concurrent.CompletableFuture
 
 class BatchServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : BatchServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/BetaServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/BetaServiceAsyncImpl.kt
index 94f5f85f5..dff5c993e 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/BetaServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/BetaServiceAsyncImpl.kt
@@ -11,7 +11,7 @@ import com.openai.services.async.beta.VectorStoreServiceAsync
 import com.openai.services.async.beta.VectorStoreServiceAsyncImpl
 
 class BetaServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : BetaServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/ChatServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/ChatServiceAsyncImpl.kt
index c4712d8bc..f56fc5359 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/ChatServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/ChatServiceAsyncImpl.kt
@@ -7,7 +7,7 @@ import com.openai.services.async.chat.CompletionServiceAsync
 import com.openai.services.async.chat.CompletionServiceAsyncImpl
 
 class ChatServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : ChatServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/CompletionServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/CompletionServiceAsyncImpl.kt
index 060946d10..ea2939ea7 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/CompletionServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/CompletionServiceAsyncImpl.kt
@@ -26,7 +26,7 @@ import com.openai.models.CompletionCreateParams
 import java.util.concurrent.CompletableFuture
 
 class CompletionServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : CompletionServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/EmbeddingServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/EmbeddingServiceAsyncImpl.kt
index b47a66b9d..dc111f2c1 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/EmbeddingServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/EmbeddingServiceAsyncImpl.kt
@@ -19,7 +19,7 @@ import com.openai.models.EmbeddingCreateParams
 import java.util.concurrent.CompletableFuture
 
 class EmbeddingServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : EmbeddingServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/FileServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/FileServiceAsyncImpl.kt
index 851f84f31..3bc80c1ae 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/FileServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/FileServiceAsyncImpl.kt
@@ -21,7 +21,7 @@ import com.openai.models.FileRetrieveParams
 import java.util.concurrent.CompletableFuture
 
 class FileServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : FileServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/FineTuningServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/FineTuningServiceAsyncImpl.kt
index f72e63acf..7cd3a3f5b 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/FineTuningServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/FineTuningServiceAsyncImpl.kt
@@ -7,7 +7,7 @@ import com.openai.services.async.fineTuning.JobServiceAsync
 import com.openai.services.async.fineTuning.JobServiceAsyncImpl
 
 class FineTuningServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : FineTuningServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/ImageServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/ImageServiceAsyncImpl.kt
index 968cae2f8..7241b4ea6 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/ImageServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/ImageServiceAsyncImpl.kt
@@ -19,7 +19,7 @@ import com.openai.models.ImagesResponse
 import java.util.concurrent.CompletableFuture
 
 class ImageServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : ImageServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/ModelServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/ModelServiceAsyncImpl.kt
index b10ded435..2b420fb1d 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/ModelServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/ModelServiceAsyncImpl.kt
@@ -21,7 +21,7 @@ import com.openai.models.ModelRetrieveParams
 import java.util.concurrent.CompletableFuture
 
 class ModelServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : ModelServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/ModerationServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/ModerationServiceAsyncImpl.kt
index 6acf6fc29..aad70cfce 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/ModerationServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/ModerationServiceAsyncImpl.kt
@@ -17,7 +17,7 @@ import com.openai.models.ModerationCreateResponse
 import java.util.concurrent.CompletableFuture
 
 class ModerationServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : ModerationServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/UploadServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/UploadServiceAsyncImpl.kt
index 5889cd0f9..c021524ef 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/UploadServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/UploadServiceAsyncImpl.kt
@@ -21,7 +21,7 @@ import com.openai.services.async.uploads.PartServiceAsyncImpl
 import java.util.concurrent.CompletableFuture
 
 class UploadServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : UploadServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/AssistantServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/AssistantServiceAsyncImpl.kt
index dc45a2f69..5537f40f7 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/AssistantServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/AssistantServiceAsyncImpl.kt
@@ -23,7 +23,7 @@ import com.openai.models.BetaAssistantUpdateParams
 import java.util.concurrent.CompletableFuture
 
 class AssistantServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : AssistantServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/ThreadServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/ThreadServiceAsyncImpl.kt
index 95d8a2f48..6ab2ba5de 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/ThreadServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/ThreadServiceAsyncImpl.kt
@@ -35,7 +35,7 @@ import com.openai.services.async.beta.threads.RunServiceAsyncImpl
 import java.util.concurrent.CompletableFuture
 
 class ThreadServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : ThreadServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/VectorStoreServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/VectorStoreServiceAsyncImpl.kt
index b7224ae84..f8930731f 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/VectorStoreServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/VectorStoreServiceAsyncImpl.kt
@@ -27,7 +27,7 @@ import com.openai.services.async.beta.vectorStores.FileServiceAsyncImpl
 import java.util.concurrent.CompletableFuture
 
 class VectorStoreServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : VectorStoreServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/threads/MessageServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/threads/MessageServiceAsyncImpl.kt
index 775cc8172..1922990e6 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/threads/MessageServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/threads/MessageServiceAsyncImpl.kt
@@ -23,7 +23,7 @@ import com.openai.models.MessageDeleted
 import java.util.concurrent.CompletableFuture
 
 class MessageServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : MessageServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/threads/RunServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/threads/RunServiceAsyncImpl.kt
index 65a1cb973..a878e9868 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/threads/RunServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/threads/RunServiceAsyncImpl.kt
@@ -33,7 +33,7 @@ import com.openai.services.async.beta.threads.runs.StepServiceAsyncImpl
 import java.util.concurrent.CompletableFuture
 
 class RunServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : RunServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/threads/runs/StepServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/threads/runs/StepServiceAsyncImpl.kt
index 11c7d8520..86df558d6 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/threads/runs/StepServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/threads/runs/StepServiceAsyncImpl.kt
@@ -18,7 +18,7 @@ import com.openai.models.RunStep
 import java.util.concurrent.CompletableFuture
 
 class StepServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : StepServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/vectorStores/FileBatchServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/vectorStores/FileBatchServiceAsyncImpl.kt
index e0509fc51..1c0276907 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/vectorStores/FileBatchServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/vectorStores/FileBatchServiceAsyncImpl.kt
@@ -21,7 +21,7 @@ import com.openai.models.VectorStoreFileBatch
 import java.util.concurrent.CompletableFuture
 
 class FileBatchServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : FileBatchServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/vectorStores/FileServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/vectorStores/FileServiceAsyncImpl.kt
index 5a750d839..33265ba1c 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/beta/vectorStores/FileServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/beta/vectorStores/FileServiceAsyncImpl.kt
@@ -22,7 +22,7 @@ import com.openai.models.VectorStoreFileDeleted
 import java.util.concurrent.CompletableFuture
 
 class FileServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : FileServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/chat/CompletionServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/chat/CompletionServiceAsyncImpl.kt
index 7114e93ac..15814464e 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/chat/CompletionServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/chat/CompletionServiceAsyncImpl.kt
@@ -27,7 +27,7 @@ import com.openai.models.ChatCompletionCreateParams
 import java.util.concurrent.CompletableFuture
 
 class CompletionServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : CompletionServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/fineTuning/JobServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/fineTuning/JobServiceAsyncImpl.kt
index 652fa47d0..49424d8b1 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/fineTuning/JobServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/fineTuning/JobServiceAsyncImpl.kt
@@ -25,7 +25,7 @@ import com.openai.services.async.fineTuning.jobs.CheckpointServiceAsyncImpl
 import java.util.concurrent.CompletableFuture
 
 class JobServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : JobServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/fineTuning/jobs/CheckpointServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/fineTuning/jobs/CheckpointServiceAsyncImpl.kt
index 8108d0c5f..c69eb8e34 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/fineTuning/jobs/CheckpointServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/fineTuning/jobs/CheckpointServiceAsyncImpl.kt
@@ -16,7 +16,7 @@ import com.openai.models.FineTuningJobCheckpointListParams
 import java.util.concurrent.CompletableFuture
 
 class CheckpointServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : CheckpointServiceAsync {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/async/uploads/PartServiceAsyncImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/async/uploads/PartServiceAsyncImpl.kt
index 945d49bf8..c1c1a6e59 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/async/uploads/PartServiceAsyncImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/async/uploads/PartServiceAsyncImpl.kt
@@ -5,6 +5,6 @@ package com.openai.services.async.uploads
 import com.openai.core.ClientOptions
 
 class PartServiceAsyncImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : PartServiceAsync
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/BatchServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/BatchServiceImpl.kt
index b571c69d2..e5571b8f2 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/BatchServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/BatchServiceImpl.kt
@@ -20,7 +20,7 @@ import com.openai.models.BatchListParams
 import com.openai.models.BatchRetrieveParams
 
 class BatchServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : BatchService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/BetaServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/BetaServiceImpl.kt
index f8d937f5f..64faa0138 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/BetaServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/BetaServiceImpl.kt
@@ -11,7 +11,7 @@ import com.openai.services.blocking.beta.VectorStoreService
 import com.openai.services.blocking.beta.VectorStoreServiceImpl
 
 class BetaServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : BetaService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/ChatServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/ChatServiceImpl.kt
index 46a439fdd..6be85fe68 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/ChatServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/ChatServiceImpl.kt
@@ -7,7 +7,7 @@ import com.openai.services.blocking.chat.CompletionService
 import com.openai.services.blocking.chat.CompletionServiceImpl
 
 class ChatServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : ChatService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/CompletionServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/CompletionServiceImpl.kt
index 77edafc1a..d72fccceb 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/CompletionServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/CompletionServiceImpl.kt
@@ -23,7 +23,7 @@ import com.openai.models.Completion
 import com.openai.models.CompletionCreateParams
 
 class CompletionServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : CompletionService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/EmbeddingServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/EmbeddingServiceImpl.kt
index 8ae7f5fa0..6e3fab7a2 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/EmbeddingServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/EmbeddingServiceImpl.kt
@@ -18,7 +18,7 @@ import com.openai.models.CreateEmbeddingResponse
 import com.openai.models.EmbeddingCreateParams
 
 class EmbeddingServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : EmbeddingService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/FileServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/FileServiceImpl.kt
index 5eac280ff..1aece60f0 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/FileServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/FileServiceImpl.kt
@@ -20,7 +20,7 @@ import com.openai.models.FileObject
 import com.openai.models.FileRetrieveParams
 
 class FileServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : FileService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/FineTuningServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/FineTuningServiceImpl.kt
index b00a51570..7af2ba5f9 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/FineTuningServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/FineTuningServiceImpl.kt
@@ -7,7 +7,7 @@ import com.openai.services.blocking.fineTuning.JobService
 import com.openai.services.blocking.fineTuning.JobServiceImpl
 
 class FineTuningServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : FineTuningService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/ImageServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/ImageServiceImpl.kt
index 8e4dcd1eb..d9f4ca28a 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/ImageServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/ImageServiceImpl.kt
@@ -18,7 +18,7 @@ import com.openai.models.ImageGenerateParams
 import com.openai.models.ImagesResponse
 
 class ImageServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : ImageService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/ModelServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/ModelServiceImpl.kt
index d42511cd2..7e9a3e9a8 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/ModelServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/ModelServiceImpl.kt
@@ -20,7 +20,7 @@ import com.openai.models.ModelListParams
 import com.openai.models.ModelRetrieveParams
 
 class ModelServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : ModelService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/ModerationServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/ModerationServiceImpl.kt
index 14ca84ab8..97074cf5e 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/ModerationServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/ModerationServiceImpl.kt
@@ -16,7 +16,7 @@ import com.openai.models.ModerationCreateParams
 import com.openai.models.ModerationCreateResponse
 
 class ModerationServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : ModerationService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/UploadServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/UploadServiceImpl.kt
index 2d481d584..74e9479ba 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/UploadServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/UploadServiceImpl.kt
@@ -20,7 +20,7 @@ import com.openai.services.blocking.uploads.PartService
 import com.openai.services.blocking.uploads.PartServiceImpl
 
 class UploadServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : UploadService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/AssistantServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/AssistantServiceImpl.kt
index b905c632f..290ee97d4 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/AssistantServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/AssistantServiceImpl.kt
@@ -22,7 +22,7 @@ import com.openai.models.BetaAssistantRetrieveParams
 import com.openai.models.BetaAssistantUpdateParams
 
 class AssistantServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : AssistantService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/ThreadServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/ThreadServiceImpl.kt
index 533391e06..8b3b370a4 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/ThreadServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/ThreadServiceImpl.kt
@@ -32,7 +32,7 @@ import com.openai.services.blocking.beta.threads.RunService
 import com.openai.services.blocking.beta.threads.RunServiceImpl
 
 class ThreadServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : ThreadService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/VectorStoreServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/VectorStoreServiceImpl.kt
index 0857ea57d..5a6e8268f 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/VectorStoreServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/VectorStoreServiceImpl.kt
@@ -26,7 +26,7 @@ import com.openai.services.blocking.beta.vectorStores.FileService
 import com.openai.services.blocking.beta.vectorStores.FileServiceImpl
 
 class VectorStoreServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : VectorStoreService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/threads/MessageServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/threads/MessageServiceImpl.kt
index c0703292b..55f3378e3 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/threads/MessageServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/threads/MessageServiceImpl.kt
@@ -22,7 +22,7 @@ import com.openai.models.Message
 import com.openai.models.MessageDeleted
 
 class MessageServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : MessageService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/threads/RunServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/threads/RunServiceImpl.kt
index c0fb5e32c..19d1b7002 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/threads/RunServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/threads/RunServiceImpl.kt
@@ -30,7 +30,7 @@ import com.openai.services.blocking.beta.threads.runs.StepService
 import com.openai.services.blocking.beta.threads.runs.StepServiceImpl
 
 class RunServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : RunService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/threads/runs/StepServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/threads/runs/StepServiceImpl.kt
index 94da24a57..f62f6b5de 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/threads/runs/StepServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/threads/runs/StepServiceImpl.kt
@@ -17,7 +17,7 @@ import com.openai.models.BetaThreadRunStepRetrieveParams
 import com.openai.models.RunStep
 
 class StepServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : StepService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/vectorStores/FileBatchServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/vectorStores/FileBatchServiceImpl.kt
index cac4f8af5..717f3de87 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/vectorStores/FileBatchServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/vectorStores/FileBatchServiceImpl.kt
@@ -20,7 +20,7 @@ import com.openai.models.BetaVectorStoreFileBatchRetrieveParams
 import com.openai.models.VectorStoreFileBatch
 
 class FileBatchServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : FileBatchService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/vectorStores/FileServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/vectorStores/FileServiceImpl.kt
index ff161db4e..0f3f334f1 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/vectorStores/FileServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/beta/vectorStores/FileServiceImpl.kt
@@ -21,7 +21,7 @@ import com.openai.models.VectorStoreFile
 import com.openai.models.VectorStoreFileDeleted
 
 class FileServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : FileService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/chat/CompletionServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/chat/CompletionServiceImpl.kt
index 7a362b886..849416e69 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/chat/CompletionServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/chat/CompletionServiceImpl.kt
@@ -24,7 +24,7 @@ import com.openai.models.ChatCompletionChunk
 import com.openai.models.ChatCompletionCreateParams
 
 class CompletionServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : CompletionService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/fineTuning/JobServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/fineTuning/JobServiceImpl.kt
index 7b25b53e6..ff3f176eb 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/fineTuning/JobServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/fineTuning/JobServiceImpl.kt
@@ -24,7 +24,7 @@ import com.openai.services.blocking.fineTuning.jobs.CheckpointService
 import com.openai.services.blocking.fineTuning.jobs.CheckpointServiceImpl
 
 class JobServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : JobService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/fineTuning/jobs/CheckpointServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/fineTuning/jobs/CheckpointServiceImpl.kt
index eda773fda..21e98b965 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/fineTuning/jobs/CheckpointServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/fineTuning/jobs/CheckpointServiceImpl.kt
@@ -15,7 +15,7 @@ import com.openai.models.FineTuningJobCheckpointListPage
 import com.openai.models.FineTuningJobCheckpointListParams
 
 class CheckpointServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : CheckpointService {
 
diff --git a/openai-java-core/src/main/kotlin/com/openai/services/blocking/uploads/PartServiceImpl.kt b/openai-java-core/src/main/kotlin/com/openai/services/blocking/uploads/PartServiceImpl.kt
index a3fd58236..8a0838d9b 100644
--- a/openai-java-core/src/main/kotlin/com/openai/services/blocking/uploads/PartServiceImpl.kt
+++ b/openai-java-core/src/main/kotlin/com/openai/services/blocking/uploads/PartServiceImpl.kt
@@ -5,6 +5,6 @@ package com.openai.services.blocking.uploads
 import com.openai.core.ClientOptions
 
 class PartServiceImpl
-constructor(
+internal constructor(
     private val clientOptions: ClientOptions,
 ) : PartService