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main.py
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import gradio as gr
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from transformers import AutoModelForCausalLM, AutoTokenizer
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import torch
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# Small public model, reliable
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MODEL_NAME = "facebook/opt-125m"
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tokenizer = AutoTokenizer.from_pretrained(MODEL_NAME)
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model = AutoModelForCausalLM.from_pretrained(MODEL_NAME).to("cpu")
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history = []
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def chat_with_airi(user_msg):
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global history
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prompt = ""
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for u, a in history[-5:]:
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prompt += f"User: {u}\nAiri: {a}\n"
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prompt += f"User: {user_msg}\nAiri:"
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inputs = tokenizer(prompt, return_tensors="pt").to("cpu")
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with torch.no_grad():
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output = model.generate(
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**inputs,
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max_new_tokens=60,
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do_sample=True,
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top_p=0.9,
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temperature=0.8,
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pad_token_id=tokenizer.eos_token_id
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)
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reply = tokenizer.decode(output[0], skip_special_tokens=True)
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reply = reply.split("Airi:", 1)[-1].strip()
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history.append([user_msg, reply])
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return history, ""
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with gr.Blocks() as demo:
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gr.HTML("<h2 style='text-align:center'>Airi — Mini Chat AI</h2>")
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gr.HTML("<p style='text-align:center;color:#666;'>Small, Fast & Public Model</p>")
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chat = gr.Chatbot()
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msg = gr.Textbox(label="Talk to Airi…", placeholder="Write here…")
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msg.submit(chat_with_airi, msg, [chat, msg])
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demo.launch()
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