diff --git a/neuralnetworks/1.3/IExecutionCallback.hal b/neuralnetworks/1.3/IExecutionCallback.hal
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+++ b/neuralnetworks/1.3/IExecutionCallback.hal
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.neuralnetworks@1.3;
+
+import @1.2::IExecutionCallback;
+import @1.2::OutputShape;
+import @1.2::Timing;
+
+/**
+ * IExecutionCallback must be used to return the error status result from an
+ * execution asynchronously launched from IPreparedModel::execute*.
+ */
+interface IExecutionCallback extends @1.2::IExecutionCallback {
+
+    /**
+     * There are three notify methods declared for the IExecutionCallback
+     * interface: notify_1_3, notify_1_2, and notify. One of the three notify
+     * methods must be invoked immediately after the asynchronous task has
+     * finished performing the execution. One of the notify methods must be
+     * provided with the ErrorStatus from the execution. If the asynchronous
+     * task is not launched, one of the notify methods must be invoked with the
+     * appropriate error.
+     *
+     * @param status Error status returned from launching the asynchronous task
+     *               (if the launch fails) or from the asynchronous task itself
+     *               (if the launch succeeds). Must be:
+     *               - NONE if the asynchronous execution was successful
+     *               - DEVICE_UNAVAILABLE if driver is offline or busy
+     *               - GENERAL_FAILURE if the asynchronous task resulted in an
+     *                 unspecified error
+     *               - OUTPUT_INSUFFICIENT_SIZE if at least one output
+     *                 operand buffer is not large enough to store the
+     *                 corresponding output
+     *               - INVALID_ARGUMENT if one of the input arguments to
+     *                 prepareModel is invalid
+     *               - MISSED_DEADLINE_* if the deadline could not be met
+     *               - RESOURCE_EXHAUSTED_* if the task was aborted by the driver
+     * @param outputShapes A list of shape information of model output operands.
+     *                     The index into "outputShapes" corresponds with to index
+     *                     of the output operand in the Request outputs vector.
+     *                     outputShapes must be empty unless the status is either
+     *                     NONE or OUTPUT_INSUFFICIENT_SIZE.
+     * @param timing Duration of execution. Unless MeasureTiming::YES was passed when
+     *               launching the execution and status is NONE, all times must
+     *               be reported as UINT64_MAX. A driver may choose to report
+     *               any time as UINT64_MAX, indicating that particular measurement is
+     *               not available.
+     */
+  oneway notify_1_3(ErrorStatus status, vec<OutputShape> outputShapes, Timing timing);
+};