diff --git a/core/src/main/java/com/google/adk/agents/InvocationContext.java b/core/src/main/java/com/google/adk/agents/InvocationContext.java
index 89c90b9fe..7602ca9f2 100644
--- a/core/src/main/java/com/google/adk/agents/InvocationContext.java
+++ b/core/src/main/java/com/google/adk/agents/InvocationContext.java
@@ -78,70 +78,6 @@ protected InvocationContext(Builder builder) {
     this.callbackContextData = new ConcurrentHashMap<>(builder.callbackContextData);
   }
 
-  /**
-   * @deprecated Use {@link #builder()} instead.
-   */
-  @Deprecated(forRemoval = true)
-  public InvocationContext(
-      BaseSessionService sessionService,
-      BaseArtifactService artifactService,
-      BaseMemoryService memoryService,
-      Plugin pluginManager,
-      Optional<LiveRequestQueue> liveRequestQueue,
-      Optional<String> branch,
-      String invocationId,
-      BaseAgent agent,
-      Session session,
-      Optional<Content> userContent,
-      RunConfig runConfig,
-      boolean endInvocation) {
-    this(
-        builder()
-            .sessionService(sessionService)
-            .artifactService(artifactService)
-            .memoryService(memoryService)
-            .pluginManager(pluginManager)
-            .liveRequestQueue(liveRequestQueue)
-            .branch(branch)
-            .invocationId(invocationId)
-            .agent(agent)
-            .session(session)
-            .userContent(userContent)
-            .runConfig(runConfig)
-            .endInvocation(endInvocation));
-  }
-
-  /**
-   * @deprecated Use {@link #builder()} instead.
-   */
-  @Deprecated(forRemoval = true)
-  public InvocationContext(
-      BaseSessionService sessionService,
-      BaseArtifactService artifactService,
-      BaseMemoryService memoryService,
-      Optional<LiveRequestQueue> liveRequestQueue,
-      Optional<String> branch,
-      String invocationId,
-      BaseAgent agent,
-      Session session,
-      Optional<Content> userContent,
-      RunConfig runConfig,
-      boolean endInvocation) {
-    this(
-        builder()
-            .sessionService(sessionService)
-            .artifactService(artifactService)
-            .memoryService(memoryService)
-            .liveRequestQueue(liveRequestQueue)
-            .branch(branch)
-            .invocationId(invocationId)
-            .agent(agent)
-            .session(session)
-            .userContent(userContent)
-            .runConfig(runConfig)
-            .endInvocation(endInvocation));
-  }
-
   /**
    * @deprecated Use {@link #builder()} instead.
    */
@@ -478,21 +414,6 @@ public Builder pluginManager(Plugin pluginManager) {
       return this;
     }
 
-    /**
-     * Sets the queue for managing live requests.
-     *
-     * @param liveRequestQueue the queue for managing live requests.
-     * @return this builder instance for chaining.
-     * @deprecated Use {@link #liveRequestQueue(LiveRequestQueue)} instead.
-     */
-    // TODO: b/462140921 - Builders should not accept Optional parameters.
-    @Deprecated(forRemoval = true)
-    @CanIgnoreReturnValue
-    public Builder liveRequestQueue(Optional<LiveRequestQueue> liveRequestQueue) {
-      this.liveRequestQueue = liveRequestQueue.orElse(null);
-      return this;
-    }
-
     /**
      * Sets the queue for managing live requests.
      *
@@ -505,21 +426,6 @@ public Builder liveRequestQueue(@Nullable LiveRequestQueue liveRequestQueue) {
       return this;
     }
 
-    /**
-     * Sets the branch ID for the invocation.
-     *
-     * @param branch the branch ID for the invocation.
-     * @return this builder instance for chaining.
-     * @deprecated Use {@link #branch(String)} instead.
-     */
-    // TODO: b/462140921 - Builders should not accept Optional parameters.
-    @Deprecated(forRemoval = true)
-    @CanIgnoreReturnValue
-    public Builder branch(Optional<String> branch) {
-      this.branch = branch.orElse(null);
-      return this;
-    }
-
     /**
      * Sets the branch ID for the invocation.
      *
@@ -568,16 +474,6 @@ public Builder session(Session session) {
       return this;
     }
 
-    /**
-     * @deprecated Use {@link #userContent(Content)} instead.
-     */
-    @CanIgnoreReturnValue
-    @Deprecated
-    public Builder userContent(Optional<Content> userContent) {
-      this.userContent = userContent.orElse(null);
-      return this;
-    }
-
     /**
      * Sets the user content that triggered this invocation.
      *
diff --git a/core/src/test/java/com/google/adk/agents/InvocationContextTest.java b/core/src/test/java/com/google/adk/agents/InvocationContextTest.java
index 0237261c5..e588a38ca 100644
--- a/core/src/test/java/com/google/adk/agents/InvocationContextTest.java
+++ b/core/src/test/java/com/google/adk/agents/InvocationContextTest.java
@@ -31,7 +31,6 @@
 import com.google.genai.types.Content;
 import java.util.HashMap;
 import java.util.Map;
-import java.util.Optional;
 import java.util.concurrent.ConcurrentHashMap;
 import org.junit.Assert;
 import org.junit.Before;
@@ -607,45 +606,6 @@ public void testBranch() {
     assertThat(context.branch()).isEmpty();
   }
 
-  @Test
-  // Testing deprecated methods.
-  public void testDeprecatedCreateMethods() {
-    InvocationContext context1 =
-        InvocationContext.builder()
-            .sessionService(mockSessionService)
-            .artifactService(mockArtifactService)
-            .invocationId(testInvocationId)
-            .agent(mockAgent)
-            .session(session)
-            .userContent(Optional.ofNullable(userContent))
-            .runConfig(runConfig)
-            .build();
-
-    assertThat(context1.sessionService()).isEqualTo(mockSessionService);
-    assertThat(context1.artifactService()).isEqualTo(mockArtifactService);
-    assertThat(context1.invocationId()).isEqualTo(testInvocationId);
-    assertThat(context1.agent()).isEqualTo(mockAgent);
-    assertThat(context1.session()).isEqualTo(session);
-    assertThat(context1.userContent()).hasValue(userContent);
-    assertThat(context1.runConfig()).isEqualTo(runConfig);
-
-    InvocationContext context2 =
-        InvocationContext.create(
-            mockSessionService,
-            mockArtifactService,
-            mockAgent,
-            session,
-            liveRequestQueue,
-            runConfig);
-
-    assertThat(context2.sessionService()).isEqualTo(mockSessionService);
-    assertThat(context2.artifactService()).isEqualTo(mockArtifactService);
-    assertThat(context2.agent()).isEqualTo(mockAgent);
-    assertThat(context2.session()).isEqualTo(session);
-    assertThat(context2.liveRequestQueue()).hasValue(liveRequestQueue);
-    assertThat(context2.runConfig()).isEqualTo(runConfig);
-  }
-
   @Test
   public void testActiveStreamingTools() {
     InvocationContext context =
@@ -686,9 +646,9 @@ public void testBuilderOptionalParameters() {
             .artifactService(mockArtifactService)
             .agent(mockAgent)
             .session(session)
-            .liveRequestQueue(Optional.of(liveRequestQueue))
-            .branch(Optional.of("test-branch"))
-            .userContent(Optional.of(userContent))
+            .liveRequestQueue(liveRequestQueue)
+            .branch("test-branch")
+            .userContent(userContent)
             .build();
 
     assertThat(context.liveRequestQueue()).hasValue(liveRequestQueue);
@@ -696,68 +656,6 @@ public void testBuilderOptionalParameters() {
     assertThat(context.userContent()).hasValue(userContent);
   }
 
-  @Test
-  // Testing deprecated methods.
-  public void testDeprecatedConstructor() {
-    InvocationContext context =
-        new InvocationContext(
-            mockSessionService,
-            mockArtifactService,
-            mockMemoryService,
-            pluginManager,
-            Optional.of(liveRequestQueue),
-            Optional.of("test-branch"),
-            testInvocationId,
-            mockAgent,
-            session,
-            Optional.of(userContent),
-            runConfig,
-            true);
-
-    assertThat(context.sessionService()).isEqualTo(mockSessionService);
-    assertThat(context.artifactService()).isEqualTo(mockArtifactService);
-    assertThat(context.memoryService()).isEqualTo(mockMemoryService);
-    assertThat(context.pluginManager()).isEqualTo(pluginManager);
-    assertThat(context.liveRequestQueue()).hasValue(liveRequestQueue);
-    assertThat(context.branch()).hasValue("test-branch");
-    assertThat(context.invocationId()).isEqualTo(testInvocationId);
-    assertThat(context.agent()).isEqualTo(mockAgent);
-    assertThat(context.session()).isEqualTo(session);
-    assertThat(context.userContent()).hasValue(userContent);
-    assertThat(context.runConfig()).isEqualTo(runConfig);
-    assertThat(context.endInvocation()).isTrue();
-  }
-
-  @Test
-  // Testing deprecated methods.
-  public void testDeprecatedConstructor_11params() {
-    InvocationContext context =
-        new InvocationContext(
-            mockSessionService,
-            mockArtifactService,
-            mockMemoryService,
-            Optional.of(liveRequestQueue),
-            Optional.of("test-branch"),
-            testInvocationId,
-            mockAgent,
-            session,
-            Optional.of(userContent),
-            runConfig,
-            true);
-
-    assertThat(context.sessionService()).isEqualTo(mockSessionService);
-    assertThat(context.artifactService()).isEqualTo(mockArtifactService);
-    assertThat(context.memoryService()).isEqualTo(mockMemoryService);
-    assertThat(context.liveRequestQueue()).hasValue(liveRequestQueue);
-    assertThat(context.branch()).hasValue("test-branch");
-    assertThat(context.invocationId()).isEqualTo(testInvocationId);
-    assertThat(context.agent()).isEqualTo(mockAgent);
-    assertThat(context.session()).isEqualTo(session);
-    assertThat(context.userContent()).hasValue(userContent);
-    assertThat(context.runConfig()).isEqualTo(runConfig);
-    assertThat(context.endInvocation()).isTrue();
-  }
-
   @Test
   public void build_missingInvocationId_null_throwsException() {
     InvocationContext.Builder builder =