diff --git a/api/build.gradle b/api/build.gradle
index 0a80a1e48b..1d21c7bdcb 100644
--- a/api/build.gradle
+++ b/api/build.gradle
@@ -55,7 +55,11 @@ dependencies {
 tasks.named("javadoc").configure {
     source sourceSets.context.allSource
     // We want io.grpc.Internal, but not io.grpc.Internal*
+    exclude 'io/grpc/*MetricInstrument.java'
+    exclude 'io/grpc/*MetricInstrumentRegistry.java'
     exclude 'io/grpc/Internal?*.java'
+    exclude 'io/grpc/MetricRecorder.java'
+    exclude 'io/grpc/MetricSink.java'
 }
 
 tasks.named("sourcesJar").configure {
diff --git a/api/src/main/java/io/grpc/ForwardingChannelBuilder2.java b/api/src/main/java/io/grpc/ForwardingChannelBuilder2.java
index a34dea3645..7f21a57ec8 100644
--- a/api/src/main/java/io/grpc/ForwardingChannelBuilder2.java
+++ b/api/src/main/java/io/grpc/ForwardingChannelBuilder2.java
@@ -258,7 +258,7 @@ public abstract class ForwardingChannelBuilder2<T extends ManagedChannelBuilder<
   }
 
   @Override
-  public T addMetricSink(MetricSink metricSink) {
+  protected T addMetricSink(MetricSink metricSink) {
     delegate().addMetricSink(metricSink);
     return thisT();
   }
diff --git a/api/src/main/java/io/grpc/InternalManagedChannelBuilder.java b/api/src/main/java/io/grpc/InternalManagedChannelBuilder.java
index 15c079fdb6..083cad4009 100644
--- a/api/src/main/java/io/grpc/InternalManagedChannelBuilder.java
+++ b/api/src/main/java/io/grpc/InternalManagedChannelBuilder.java
@@ -19,6 +19,7 @@ package io.grpc;
 /**
  * Internal accessors for {@link ManagedChannelBuilder}.
  */
+@Internal
 public final class InternalManagedChannelBuilder {
   private InternalManagedChannelBuilder() {}
 
@@ -27,5 +28,10 @@ public final class InternalManagedChannelBuilder {
     return builder.interceptWithTarget(factory);
   }
 
+  public static <T extends ManagedChannelBuilder<T>> T addMetricSink(
+      ManagedChannelBuilder<T> builder, MetricSink metricSink) {
+    return builder.addMetricSink(metricSink);
+  }
+
   public interface InternalInterceptorFactory extends ManagedChannelBuilder.InterceptorFactory {}
 }
diff --git a/api/src/main/java/io/grpc/LoadBalancer.java b/api/src/main/java/io/grpc/LoadBalancer.java
index ae9336eb98..80e3f8b89c 100644
--- a/api/src/main/java/io/grpc/LoadBalancer.java
+++ b/api/src/main/java/io/grpc/LoadBalancer.java
@@ -1255,7 +1255,7 @@ public abstract class LoadBalancer {
      *
      * @since 1.64.0
      */
-    @ExperimentalApi("https://github.com/grpc/grpc-java/issues/11110")
+    @Internal
     public MetricRecorder getMetricRecorder() {
       return new MetricRecorder() {};
     }
diff --git a/api/src/main/java/io/grpc/ManagedChannelBuilder.java b/api/src/main/java/io/grpc/ManagedChannelBuilder.java
index 9f8e5479ad..6e30d8eae0 100644
--- a/api/src/main/java/io/grpc/ManagedChannelBuilder.java
+++ b/api/src/main/java/io/grpc/ManagedChannelBuilder.java
@@ -628,8 +628,8 @@ public abstract class ManagedChannelBuilder<T extends ManagedChannelBuilder<T>>
    * @return this
    * @since 1.64.0
    */
-  @ExperimentalApi("https://github.com/grpc/grpc-java/issues/11110")
-  public T addMetricSink(MetricSink metricSink) {
+  @Internal
+  protected T addMetricSink(MetricSink metricSink) {
     throw new UnsupportedOperationException();
   }
 
diff --git a/api/src/main/java/io/grpc/MetricSink.java b/api/src/main/java/io/grpc/MetricSink.java
index a7ca8d8f9a..0f56b1acb7 100644
--- a/api/src/main/java/io/grpc/MetricSink.java
+++ b/api/src/main/java/io/grpc/MetricSink.java
@@ -23,7 +23,7 @@ import java.util.Set;
 /**
  * An internal interface representing a receiver or aggregator of gRPC metrics data.
  */
-@ExperimentalApi("https://github.com/grpc/grpc-java/issues/11110")
+@Internal
 public interface MetricSink {
 
   /**
diff --git a/core/src/main/java/io/grpc/internal/ManagedChannelImplBuilder.java b/core/src/main/java/io/grpc/internal/ManagedChannelImplBuilder.java
index b12fd43d36..7da9125087 100644
--- a/core/src/main/java/io/grpc/internal/ManagedChannelImplBuilder.java
+++ b/core/src/main/java/io/grpc/internal/ManagedChannelImplBuilder.java
@@ -687,7 +687,7 @@ public final class ManagedChannelImplBuilder
   }
 
   @Override
-  public ManagedChannelImplBuilder addMetricSink(MetricSink metricSink) {
+  protected ManagedChannelImplBuilder addMetricSink(MetricSink metricSink) {
     metricSinks.add(checkNotNull(metricSink, "metric sink"));
     return this;
   }
diff --git a/opentelemetry/src/main/java/io/grpc/opentelemetry/GrpcOpenTelemetry.java b/opentelemetry/src/main/java/io/grpc/opentelemetry/GrpcOpenTelemetry.java
index f35b7cd181..e9f3ee73f1 100644
--- a/opentelemetry/src/main/java/io/grpc/opentelemetry/GrpcOpenTelemetry.java
+++ b/opentelemetry/src/main/java/io/grpc/opentelemetry/GrpcOpenTelemetry.java
@@ -145,7 +145,7 @@ public final class GrpcOpenTelemetry {
    * Configures the given {@link ManagedChannelBuilder} with OpenTelemetry metrics instrumentation.
    */
   public void configureChannelBuilder(ManagedChannelBuilder<?> builder) {
-    builder.addMetricSink(sink);
+    InternalManagedChannelBuilder.addMetricSink(builder, sink);
     InternalManagedChannelBuilder.interceptWithTarget(
         builder, openTelemetryMetricsModule::getClientInterceptor);
   }
diff --git a/rls/src/test/java/io/grpc/rls/RlsLoadBalancerTest.java b/rls/src/test/java/io/grpc/rls/RlsLoadBalancerTest.java
index 56cd3cd944..1f46b86db6 100644
--- a/rls/src/test/java/io/grpc/rls/RlsLoadBalancerTest.java
+++ b/rls/src/test/java/io/grpc/rls/RlsLoadBalancerTest.java
@@ -42,6 +42,7 @@ import io.grpc.ConnectivityState;
 import io.grpc.ConnectivityStateInfo;
 import io.grpc.EquivalentAddressGroup;
 import io.grpc.ForwardingChannelBuilder2;
+import io.grpc.InternalManagedChannelBuilder;
 import io.grpc.LoadBalancer.CreateSubchannelArgs;
 import io.grpc.LoadBalancer.Helper;
 import io.grpc.LoadBalancer.PickDetailsConsumer;
@@ -310,10 +311,11 @@ public class RlsLoadBalancerTest {
         .start());
     MetricSink metrics = mock(MetricSink.class, delegatesTo(new NoopMetricSink()));
     ManagedChannel channel = grpcCleanupRule.register(
-        InProcessChannelBuilder.forName("fake-bigtable.googleapis.com")
-        .defaultServiceConfig(parseJson(getServiceConfigJsonStr()))
-        .addMetricSink(metrics)
-        .directExecutor()
+        InternalManagedChannelBuilder.addMetricSink(
+            InProcessChannelBuilder.forName("fake-bigtable.googleapis.com")
+            .defaultServiceConfig(parseJson(getServiceConfigJsonStr()))
+            .directExecutor(),
+        metrics)
         .build());
 
     StreamRecorder<Void> recorder = StreamRecorder.create();
diff --git a/xds/src/test/java/io/grpc/xds/WeightedRoundRobinLoadBalancerTest.java b/xds/src/test/java/io/grpc/xds/WeightedRoundRobinLoadBalancerTest.java
index 618742c41e..2913a1e1d7 100644
--- a/xds/src/test/java/io/grpc/xds/WeightedRoundRobinLoadBalancerTest.java
+++ b/xds/src/test/java/io/grpc/xds/WeightedRoundRobinLoadBalancerTest.java
@@ -44,6 +44,7 @@ import io.grpc.ConnectivityState;
 import io.grpc.ConnectivityStateInfo;
 import io.grpc.DoubleHistogramMetricInstrument;
 import io.grpc.EquivalentAddressGroup;
+import io.grpc.InternalManagedChannelBuilder;
 import io.grpc.LoadBalancer;
 import io.grpc.LoadBalancer.CreateSubchannelArgs;
 import io.grpc.LoadBalancer.Helper;
@@ -1268,11 +1269,13 @@ public class WeightedRoundRobinLoadBalancerTest {
         .start());
     MetricSink metrics = mock(MetricSink.class, delegatesTo(new NoopMetricSink()));
     Channel channel = grpcCleanupRule.register(
-        InProcessChannelBuilder.forName(serverName)
-        .defaultServiceConfig(Collections.singletonMap(
-            "loadBalancingConfig", Arrays.asList(Collections.singletonMap(
-                "weighted_round_robin", Collections.emptyMap()))))
-        .addMetricSink(metrics)
+        InternalManagedChannelBuilder.addMetricSink(
+            InProcessChannelBuilder.forName(serverName)
+            .defaultServiceConfig(Collections.singletonMap(
+                "loadBalancingConfig", Arrays.asList(Collections.singletonMap(
+                    "weighted_round_robin", Collections.emptyMap()))))
+            .directExecutor(),
+        metrics)
         .directExecutor()
         .build());