About this tool
Describe what you want to match and get the regex.
Free AI regular-expression generator. Describe in natural language and get the perfect regex with explanation.
How to use AI regex generator
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1
Type or upload
Type what you want in the box above — or upload the file if the tool asks for one.
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2
Generate
Click the main button. Wait 2-30 seconds depending on the model and input size.
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3
Download or share
Download the result or share the direct link. No watermark, ready to use.
Frequently asked questions
What languages does AI Regex Generator support?
AI regex generator handles all mainstream languages: Python, JavaScript / TypeScript, Java, C / C++, Rust, Go, Swift, Kotlin, PHP, Ruby, SQL, Bash, R. Also frameworks (React, Vue, Django, Spring) and formats like Dockerfile, YAML, JSON, GraphQL, Terraform.
Does AI Regex Generator work with whole repos or just snippets?
AI regex generator accepts full files pasted or multiple functions at once. Models with large context (Qwen3 Coder with 262K tokens, Gemini 2.5 Pro with 1M, Claude Sonnet 4) can load entire modules, for full repositories client them in context or work on the relevant files.
Is the code generated by AI Regex Generator safe to use?
AI regex generator produces reasonable code, but NOT replaces human review. Review any code before merging: AIs occasionally invent functions that do not exist, use deprecated APIs or introduce subtle vulnerabilities (SQL injection, secrets in logs, race conditions).
Does AI regex generator use my code to train models?
No, the code you paste into AI Regex Generator travels to the model provider (Anthropic, OpenAI, etc.) under our corporate account, not associated with you, and not used for training. For code under strict NDA, we recommend using open-weight models (Llama, Qwen) — they run without sending anything to the original provider.
Can I integrate AI Regex Builder into my editor or CI?
Yes, the REST API returns the code in JSON ready to embed — useful for pre-commit hooks, CI agents, or editor extensions. Your API token bearer is in /api/; tokens are discounted just like on the web.