Show HN: Regexplainer – Explain regex using Codex

Regexplainer is a website where you can try to obtain an explanation of a regex (Python’s re package style). The success rate of a good explanation is fairly high for complex regex.

I made this project to try Codex explanation capabilities. And also to have something to show during hiring interviews. Regex are really interesting because they are complex enough for non tech people that being able to generate an explanation for them is a real world problem. Moreover for the same reason they are suited to try generating precise mid-level of abstraction explanations instead of vague high level ones which is important for many real use cases.

I am actually impressed by the ability of codex to generate good enough explanations with a decent rate. If OpenAI would extend fine tuning to codex models I bet the resulting model could be really impressive on this particular task.