Enable it by going into account settings -> Beta features -> Code Interpreter

"Try a version of ChatGPT that knows how to write and execute python code, and can work with file uploads. Try asking for help with data analysis, image conversions, or editing a code file. Note: files will not persist beyond a single session."

Can upload files up to 100mb, and zipped files work

Latent space did a nice podcast episode covering Code Interpreter: https://www.latent.space/p/code-interpreter

Have you used it? Thoughts?