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+---
+title: Make your own AI Chatbot
+layout: "../../layouts/BlogLayout.astro"
+preview: "Not affiliated with ChatGPT"
+datePublished: 2023-09-06
+---
+
+## Introduction
+
+AI chatbots like ChatGPT are pretty cool, no one's denying that, but also they train it on your inputs by default and you're at the mercy of OpenAI/Google/Other AI Overlord as to when you can use it.
+Why not make/host your own?
+
+## Setup
+
+If you haven't got Python installed, you _probably_ want to install [miniconda](//docs.conda.io/projects/miniconda/en/latest/miniconda-install.html).
+
+We need to install a few things first (scope it to the project):
+
+- [Chainlit](https://docs.chainlit.io/installation)
+- [`llama-cpp-python`](https://docs.chainlit.io/installation)
+- [LangChain](https://python.langchain.com/docs/get_started/installation.html)
+
+and you also want to install a llama model.
+This is more complicated than it needs to be, but you sign up to ~~Facebook's~~ Meta's llama access [here](https://ai.meta.com/resources/models-and-libraries/llama-downloads/) and then download one of the `.gguf` files [here](https://huggingface.co/TheBloke/Llama-2-13B-chat-GGUF).
+The one I'm using is called [llama-2-13b-chat.Q4_K_M.gguf](https://huggingface.co/TheBloke/Llama-2-13B-chat-GGUF/blob/main/llama-2-13b-chat.Q4_K_M.gguf).
+
+## Chainlit
+
+Chainlit is super easy to use, if you want an interactive app with most of the work done for you, then that's enough!
+
+If you create a file called `app.py`, pop this into it
+
+``` py
+import chainlit as cl
+
+@cl.on_message
+async def main(message: str):
+    await cl.Message(content=f"Received: {message}").send()
+```
+
+and then run the following command
+
+``` sh
+chainlit run app.py -w
+```
+
+The `-w` flag turns on auto-reloading, so you can edit `app.py` and it'll update live at <http://localhost:8000> (not http**s** for some reason).
+
+## LangChain
+
+``` py
+from langchain.llms import LlamaCpp
+
+llm = LlamaCpp(
+    model_path="./models/llama-2-13b-chat.Q4_K_M.gguf", # Make sure you change this to the path you downloaded it to earlier
+    max_tokens=2048,
+)
+
+output = llm("Q: Name the planets in the solar system? A: ", max_tokens=32, stop=["Q:", "\n"], echo=True)
+print(output)
+```
+
+produces
+
+```
+{
+  "id": "cmpl-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
+  "object": "text_completion",
+  "created": 1679561337,
+  "model": "./models/7B/ggml-model.bin",
+  "choices": [
+    {
+      "text": "Q: Name the planets in the solar system? A: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.",
+      "index": 0,
+      "logprobs": None,
+      "finish_reason": "stop"
+    }
+  ],
+  "usage": {
+    "prompt_tokens": 14,
+    "completion_tokens": 28,
+    "total_tokens": 42
+  }
+}
+```
+
+## Combining them
+
+Now if we stick them together, we find this, a pretty simple minimal working example for a chat bot.
+
+``` py
+import chainlit as cl
+from langchain.llms import LlamaCpp
+from langchain import PromptTemplate, LLMChain
+
+template = """You are a helpful and friendly AI chatbot. Try and answer the following if you can.
+Question: {question}
+Answer: """
+
+@cl.on_chat_start
+def main():
+    # Make sure the model path is correct for your system!
+    llm = LlamaCpp(
+        model_path="./models/llama-2-13b-chat.Q4_K_M.gguf",
+        max_tokens=2048,
+    )
+
+    llm_chain = LLMChain(prompt=prompt, llm=llm, verbose=True)
+
+    # Store the chain in the user session
+    cl.user_session.set("llm_chain", llm_chain)
+
+
+@cl.on_message
+async def main(message: str):
+    # Get chain from the user session
+    llm_chain = cl.user_session.get("llm_chain")
+
+    # Call the chain asynchronously
+    res = await llm_chain.acall(message)
+
+    await cl.Message(content=res["text"]).send()
+
+```