diff --git a/docs/reference/ml/trained-models/apis/get-trained-models-stats.asciidoc b/docs/reference/ml/trained-models/apis/get-trained-models-stats.asciidoc
index 82263c98e9112..766886a0b48a2 100644
--- a/docs/reference/ml/trained-models/apis/get-trained-models-stats.asciidoc
+++ b/docs/reference/ml/trained-models/apis/get-trained-models-stats.asciidoc
@@ -384,6 +384,7 @@ A collection of model size stats fields.
 `model_size_bytes`:::
 (integer)
 The size of the model in bytes.
+This parameter applies only to PyTorch models.
 
 `required_native_memory_bytes`:::
 (integer)
diff --git a/docs/reference/ml/trained-models/apis/get-trained-models.asciidoc b/docs/reference/ml/trained-models/apis/get-trained-models.asciidoc
index 3736766b6b063..0dbb08aa9960d 100644
--- a/docs/reference/ml/trained-models/apis/get-trained-models.asciidoc
+++ b/docs/reference/ml/trained-models/apis/get-trained-models.asciidoc
@@ -130,6 +130,7 @@ The free-text description of the trained model.
 `model_size_bytes`:::
 (integer)
 The estimated model size in bytes to keep the trained model in memory.
+This parameter applies only to {dfanalytics} trained models.
 
 `estimated_operations`:::
 (integer)