Prompt content and language

Hello, i am designing a chatbot for my company. My customer are often asking questions in Turkish. i’m using the gpt-3.5-turbo API and I have a lot of prompts. In which language should I create these prompts ? Actually, I make it produce answers to the asking question in every language, but I don’t know which language would be more performant for me to use when creating prompts.

As it was trained mostly on English, GPT series isn’t great at other languages, though it does do them.

What I would suggest is a series of maybe a dozen tests with prompts in both languages to contrast and compare for your needs.