Update README.md

README.md

@@ -79,7 +79,7 @@ Also cite the ByT5 paper:
 
 ## Model Details
 
-This is the model card for the 300M-parameter **MrT5 Large** (`mrt5-large`), a more efficient variant of ByT5 Large (`google/byt5-large`). This model is trained to reduce sequence lengths by ~50% on average.
+This is the model card for the 1.23B-parameter **MrT5 Large** (`mrt5-large`), a more efficient variant of ByT5 Large (`google/byt5-large`). This model is trained to reduce sequence lengths by ~50% on average.
 
 - **Developed by:** Julie Kallini, Shikhar Murty, Christopher D. Manning, Christopher Potts, Róbert Csordás
 - **Model type:** MrT5