from transformers import AutoModelForSeq2SeqLM, AutoTokenizer
model = AutoModelForSeq2SeqLM.from_pretrained("google/madlad400-3b-mt")
tokenizer = AutoTokenizer.from_pretrained("google/madlad400-3b-mt")
inputs = tokenizer("<2pt> I love pizza!", return_tensors="pt")
outputs = model.generate(**inputs)
print(tokenizer.batch_decode(outputs, skip_special_tokens=True))
['Eu amo pizza!']

Google has released the following variants:

google/madlad400-3b-mt

google/madlad400-7b-mt

google/madlad400-7b-mt-bt