Regex from English (AI)

Describe a pattern in plain English and get a tested regular expression with examples.

๐Ÿ”’ Bring-your-own-key โ€” your key is sent only with this request and never stored. Get a key from Anthropic or OpenAI.

About this tool

Describe the pattern you want in plain English and the AI returns a regular expression, an explanation and example matches. Bring your own key.

Frequently asked questions

What regex flavour does it output?

A .NET / PCRE-compatible expression, plus a short explanation and example matches.

Should I still test the regex?

Yes — pair it with the Regex Tester tool to validate against your real inputs before shipping.

Do I need my own API key?

Yes. This tool is bring-your-own-key: paste your own Anthropic or OpenAI key and it is used only for that single request — never stored on our servers.

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