If you're looking for a Regex.ai alternative, rgx.tools is a good option. This online AI-powered regex generator and editor uses GPT-3.5 Turbo to generate regex patterns from text prompts, letting you create and edit complex regex code more easily. It offers examples for common use cases, and it's free to use, so it's a good option for developers and anyone else who has to wrestle with regex patterns.
Another option is ManyExcel, which includes an AI Regex Generator among its collection of tools. The tool generates regex patterns along with explanations so you can quickly and easily create and update regular expressions. ManyExcel also offers an AI Formula Generator and an AI Script Generator, so it's a good tool for automating Excel and Google Sheets tasks.
If you need something more powerful that combines data scraping and automation, Axiom could be a good fit. Axiom lets you automate websites and repetitive tasks without any programming, with features like visual web scraping, automated data entry and integration with other automation tools. It's got AI automation built with ChatGPT, which can be useful for data extraction and analysis tasks.