diff --git a/setup.cfg b/setup.cfg
index 1f0b48c..3de096b 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -28,8 +28,8 @@ install_requires =
     click>=8.0
     pandas>=1.1.0
     rxn-chem-utils>=1.3.0
-    rxn-onmt-models>=1.0.0
-    rxn-onmt-utils>=1.0.0
+    rxn-onmt-models@git+https://github.com/rxn4chemistry/rxn-onmt-models.git@d14ee743fe0b4e1881613113f33304b2b91887c8
+    rxn-onmt-utils@git+https://github.com/rxn4chemistry/rxn-onmt-utils.git@100ed8c721fcc026c603c11998a8478b13630ce8
     rxn-utils>=1.1.9
 
 [options.packages.find]
diff --git a/src/rxn/metrics/run_metrics.py b/src/rxn/metrics/run_metrics.py
index 769bce6..abea38e 100644
--- a/src/rxn/metrics/run_metrics.py
+++ b/src/rxn/metrics/run_metrics.py
@@ -68,6 +68,8 @@ def run_model_for_metrics(
     batch_size: int,
     gpu: bool,
     initialize_logger: bool = False,
+    as_external_command: bool = False,
+    **kwargs,
 ) -> None:
     ensure_directory_exists_and_is_empty(output_dir)
     files = get_metrics_files(task, output_dir)
@@ -88,6 +90,8 @@ def run_model_for_metrics(
         beam_size=beam_size,
         batch_size=batch_size,
         gpu=gpu,
+        as_external_command=as_external_command,
+        **kwargs,
     )
 
     canonicalize_file(
diff --git a/src/rxn/metrics/scripts/prepare_forward_metrics.py b/src/rxn/metrics/scripts/prepare_forward_metrics.py
index 9f63d1a..8dc3229 100644
--- a/src/rxn/metrics/scripts/prepare_forward_metrics.py
+++ b/src/rxn/metrics/scripts/prepare_forward_metrics.py
@@ -38,6 +38,10 @@
 @click.option(
     "--no_metrics", is_flag=True, help="If given, the metrics will not be computed."
 )
+@click.option(
+    "--as_external_command", type=bool, default=False, help="Run translation as external ONMT command"
+)
+@click.argument('extra_options', nargs=-1, type=click.UNPROCESSED)
 def main(
     precursors_file: Path,
     products_file: Path,
@@ -47,10 +51,15 @@ def main(
     n_best: int,
     gpu: bool,
     no_metrics: bool,
+    as_external_command: bool,
+    extra_options: list,
 ) -> None:
     """Starting from the ground truth files and forward model, generate the
     translation files needed for the metrics, and calculate the default metrics."""
 
+    # Convert extra_options into a dictionary
+    kwargs = {key: value for key, value in (opt.split('=') for opt in extra_options)}
+
     run_model_for_metrics(
         task="forward",
         model_path=forward_model,
@@ -62,6 +71,8 @@ def main(
         batch_size=batch_size,
         gpu=gpu,
         initialize_logger=True,
+        as_external_command=as_external_command,
+        **kwargs,
     )
 
     if not no_metrics:
diff --git a/src/rxn/metrics/scripts/prepare_retro_metrics.py b/src/rxn/metrics/scripts/prepare_retro_metrics.py
index 6652abd..fe0c67b 100644
--- a/src/rxn/metrics/scripts/prepare_retro_metrics.py
+++ b/src/rxn/metrics/scripts/prepare_retro_metrics.py
@@ -93,6 +93,10 @@
         "only if the true reactant accuracy is activated."
     ),
 )
+@click.option(
+    "--as_external_command", type=bool, default=False, help="Run translation as external ONMT command"
+)
+@click.argument('extra_options', nargs=-1, type=click.UNPROCESSED)
 def main(
     precursors_file: Path,
     products_file: Path,
@@ -108,10 +112,16 @@ def main(
     class_tokens: Optional[int],
     with_true_reactant_accuracy: bool,
     rxnmapper_batch_size: int,
+    as_external_command: bool,
+    extra_options: list,
 ) -> None:
     """Starting from the ground truth files and two models (retro, forward),
     generate the translation files needed for the metrics, and calculate the default metrics.
     """
+
+    # Convert extra_options into a dictionary
+    kwargs = {key: value for key, value in (opt.split('=') for opt in extra_options)}
+
     true_reactant_environment_check(with_true_reactant_accuracy)
 
     ensure_directory_exists_and_is_empty(output_dir)
@@ -142,6 +152,8 @@ def main(
         beam_size=beam_size,
         batch_size=batch_size,
         gpu=gpu,
+        as_external_command=as_external_command,
+        **kwargs,
     )
 
     canonicalize_file(
@@ -161,6 +173,8 @@ def main(
         beam_size=10,
         batch_size=batch_size,
         gpu=gpu,
+        as_external_command=as_external_command,
+        **kwargs,
     )
 
     canonicalize_file(