Programming

ChatGPT can do better if you explicitly say what you want. All it can do is suggest areas to look at.

Try something like:

Analyze the following code and provide direct feedback with a focus on maintainability, established best practices, and robustness. Respond as a seasoned expert providing actionable criticism, avoiding praise and low-impact suggestions.
***
<code>

That being said, you have to look at the stuff it says and consider whether the feedback is useful or not. It suggests some things to examine, but that doesn't mean the advice it gives is always good. You can also feed it a chunk of code and ask if there is a more efficient or maintainable way of writing it — but remember it's always going to say there are things you can improve so you have to be the one to decide which suggestions make things actually better and which are just response filler.

It also may not catch everything, particularly if it doesn't understand where the code will run or what it will be used for.