> ## Documentation Index
> Fetch the complete documentation index at: https://chatsgo.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Optimize AI Response Quality

[ChatsGo.app](https://www.chatsgo.app) (Chats GO) is powered by large language models (LLM) like OpenAI’s ChatGPT.

As powerful as LLMs are, they can sometimes produce inaccurate or out-of-scope answers. This is called “hallucination”.

ChatsGo.app provides multiple mechanisms/features to decrease hallucination.

### Avoid duplicated content

Adding multiple times the same documents/information, even translated should be avoided.

Duplicated content can impact the Chatbot's performance.

It is best to add a piece of information only once, whatever the language

### Use GPT-4

Using GPT-4 can help to generate more accurate and truthful responses.

This model is also more respectful of the instructions given in a prompt.

The downside of GPT-4 is that it costs more credits and is slower than GPT-3.5-turbo.

### Fine-tune your Agent’s answers

Use our latest feature, [Fine-tune Answers](/features/fine-tune-answers), to correct an Agent's answer.