How to Redact PII before sending prompts to OpenAI, Claude, or Gemini (opens in new tab)

If you send user text to an LLM, you are probably sending personal data with it without meaning to. A support message, a chat transcript, a pasted form. They carry names, emails, phone numbers, and sometimes card numbers, and all of it ends up in your prompt. Once that prompt leaves your server, the personal data is sitting in someone else's logs, which is a real problem under GDPR and HIPAA. The fix is simpler than most people expect, and it does not mean giving up the model. You redact the ...