diff --git a/src/benchmark/benchmark_generator.py b/src/benchmark/benchmark_generator.py
index bfb70be..c972877 100644
--- a/src/benchmark/benchmark_generator.py
+++ b/src/benchmark/benchmark_generator.py
@@ -6,13 +6,13 @@ import sys
 
 import torch
 
-_SPEAKER_ID = 0
-
 
 def main() -> None:
     parser = argparse.ArgumentParser()
-    parser.add_argument("-m", "--model", required=True, help="Path to Onnx model file")
-    parser.add_argument("-c", "--config", help="Path to model config file")
+    parser.add_argument(
+        "-m", "--model", required=True, help="Path to generator file (.pt)"
+    )
+    parser.add_argument("-c", "--config", help="Path to model config file (.json)")
     args = parser.parse_args()
 
     if not args.config:
diff --git a/src/benchmark/benchmark_onnx.py b/src/benchmark/benchmark_onnx.py
index 22426cd..553ac14 100644
--- a/src/benchmark/benchmark_onnx.py
+++ b/src/benchmark/benchmark_onnx.py
@@ -2,6 +2,7 @@
 import argparse
 import json
 import time
+import statistics
 import sys
 
 import onnxruntime
@@ -10,13 +11,14 @@ import numpy as np
 _NOISE_SCALE = 0.667
 _LENGTH_SCALE = 1.0
 _NOISE_W = 0.8
-_SPEAKER_ID = 0
 
 
 def main() -> None:
     parser = argparse.ArgumentParser()
-    parser.add_argument("-m", "--model", required=True, help="Path to Onnx model file")
-    parser.add_argument("-c", "--config", help="Path to model config file")
+    parser.add_argument(
+        "-m", "--model", required=True, help="Path to Onnx model file (.onnx)"
+    )
+    parser.add_argument("-c", "--config", help="Path to model config file (.json)")
     args = parser.parse_args()
 
     if not args.config:
@@ -29,7 +31,25 @@ def main() -> None:
     utterances = [json.loads(line) for line in sys.stdin]
 
     start_time = time.monotonic_ns()
-    session = onnxruntime.InferenceSession(args.model)
+
+    session_options = onnxruntime.SessionOptions()
+    session_options.graph_optimization_level = (
+        onnxruntime.GraphOptimizationLevel.ORT_DISABLE_ALL
+    )
+    # session_options.enable_cpu_mem_arena = False
+    # session_options.enable_mem_pattern = False
+    session_options.enable_mem_reuse = False
+    # session_options.enable_profiling = False
+    # session_options.execution_mode = onnxruntime.ExecutionMode.ORT_PARALLEL
+    # session_options.execution_order = onnxruntime.ExecutionOrder.PRIORITY_BASED
+
+    session = onnxruntime.InferenceSession(
+        args.model,
+        sess_options=session_options,
+    )
+    # session.intra_op_num_threads = 1
+    # session.inter_op_num_threads = 1
+
     end_time = time.monotonic_ns()
 
     load_sec = (end_time - start_time) / 1e9
@@ -47,7 +67,12 @@ def main() -> None:
         )
 
     json.dump(
-        {"load_sec": load_sec, "synthesize_rtf": synthesize_rtf},
+        {
+            "load_sec": load_sec,
+            "rtf_mean": statistics.mean(synthesize_rtf),
+            "rtf_stdev": statistics.stdev(synthesize_rtf),
+            "rtfs": synthesize_rtf,
+        },
         sys.stdout,
     )
 
diff --git a/src/benchmark/benchmark_torchscript.py b/src/benchmark/benchmark_torchscript.py
new file mode 100644
index 0000000..11cc51c
--- /dev/null
+++ b/src/benchmark/benchmark_torchscript.py
@@ -0,0 +1,85 @@
+#!/usr/bin/env python3
+import argparse
+import json
+import time
+import sys
+
+import torch
+
+_NOISE_SCALE = 0.667
+_LENGTH_SCALE = 1.0
+_NOISE_W = 0.8
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "-m", "--model", required=True, help="Path to Torchscript file (.ts)"
+    )
+    parser.add_argument("-c", "--config", help="Path to model config file (.json)")
+    args = parser.parse_args()
+
+    if not args.config:
+        args.config = f"{args.model}.json"
+
+    with open(args.config, "r", encoding="utf-8") as config_file:
+        config = json.load(config_file)
+
+    sample_rate = config["audio"]["sample_rate"]
+    utterances = [json.loads(line) for line in sys.stdin]
+
+    start_time = time.monotonic_ns()
+    model = torch.jit.load(args.model)
+    end_time = time.monotonic_ns()
+
+    model.eval()
+
+    load_sec = (end_time - start_time) / 1e9
+    synthesize_rtf = []
+    for utterance in utterances:
+        phoneme_ids = utterance["phoneme_ids"]
+        speaker_id = utterance.get("speaker_id")
+        synthesize_rtf.append(
+            synthesize(
+                model,
+                phoneme_ids,
+                speaker_id,
+                sample_rate,
+            )
+        )
+
+    json.dump(
+        {"load_sec": load_sec, "synthesize_rtf": synthesize_rtf},
+        sys.stdout,
+    )
+
+
+def synthesize(model, phoneme_ids, speaker_id, sample_rate) -> float:
+    text = torch.LongTensor(phoneme_ids).unsqueeze(0)
+    text_lengths = torch.LongTensor([len(phoneme_ids)])
+    sid = torch.LongTensor([speaker_id]) if speaker_id is not None else None
+
+    start_time = time.monotonic_ns()
+    audio = (
+        model(
+            text,
+            text_lengths,
+            sid,
+            torch.FloatTensor([_NOISE_SCALE]),
+            torch.FloatTensor([_LENGTH_SCALE]),
+            torch.FloatTensor([_NOISE_W]),
+        )[0]
+        .detach()
+        .numpy()
+        .squeeze()
+    )
+    end_time = time.monotonic_ns()
+
+    audio_sec = (len(audio) / 2) / sample_rate
+    infer_sec = (end_time - start_time) / 1e9
+
+    return infer_sec / audio_sec
+
+
+if __name__ == "__main__":
+    main()
diff --git a/src/python/piper_train/export_torchscript.py b/src/python/piper_train/export_torchscript.py
index 80e413f..3555a20 100644
--- a/src/python/piper_train/export_torchscript.py
+++ b/src/python/piper_train/export_torchscript.py
@@ -57,9 +57,7 @@ def main():
     )
     sequence_lengths = torch.LongTensor([sequences.size(1)])
 
-    sid: Optional[int] = None
-    if num_speakers > 1:
-        sid = torch.LongTensor([0])
+    sid = torch.LongTensor([0])
 
     dummy_input = (
         sequences,