How to prevent duplicate output? Repeated sentences? I want to generate longer texts

Created by: FurkanGozukara

Hello. I am experimenting with the model and the generated output is all repeated sentences? How can I prevent that?

Here my simple input and generated output. I want to generate longer texts

from transformers import GPT2Tokenizer, OPTForCausalLM

model = OPTForCausalLM.from_pretrained("facebook/opt-350m")
tokenizer = GPT2Tokenizer.from_pretrained("facebook/opt-350m")

prompt = "How to do proper deadlift?"
inputs = tokenizer(prompt, return_tensors="pt")

# Generate
generate_ids = model.generate(inputs.input_ids, max_length=300)
tokenizer.batch_decode(generate_ids, skip_special_tokens=True, clean_up_tokenization_spaces=False)[0]

'How to do proper deadlift?\n\nI have been doing deadlift for about a year now and I have been doing it for about a month now. I have been doing it for about a month now and I have been doing it for about a month now. I have been doing it for about a month now and I have been doing it for about a month now. I have been doing it for about a month now and I have been doing it for about a month now. I have been doing it for about a month now and I have been doing it for about a month now. I have been doing it for about a month now and I have been doing it for about a month now. I have been doing it for about a month now and I have been doing it for about a month now. I have been doing it for about a month now and I have been doing it for about a month now. I have been doing it for about a month now and I have been doing it for about a month now. I have been doing it for about a month now and I have been doing it for about a month now. I have been doing it for about a month now and I have been doing it for about a month now. I have been doing it for about a month now and I have been doing it for about a month now. I have been doing it for about a month now and I have been doing it for about a month now. I have been'