---
title: "Use ChatGPT without handing OpenAI your confidential data."
description: "ChatGPT is the default scratchpad for work, and that's exactly the problem. Locke detects sensitive data on your device before a single prompt reaches OpenAI."
url: "https://sonomos.ai/for/chatgpt/"
source: "https://sonomos.ai/for/chatgpt/"
---

# Use ChatGPT without handing OpenAI your confidential data.

ChatGPT became the office scratchpad faster than policy could follow. People paste in contracts to summarise, emails to rewrite and logs to debug, often on a personal account no admin can see. The box that makes it useful is the box that sends your data to a third party.

A no-training setting or an enterprise agreement doesn't keep the prompt on your device. The provider can still decrypt it, and it can sit in retention logs. For client PII, PHI, financials or privileged material, "they won't train on it" is not "it never left the machine."

Locke works on your device, before the network call. You use ChatGPT as you do now, and the raw sensitive values stay behind.

## The risk with ChatGPT

ChatGPT often runs on a personal account that corporate controls never reach. Pasted contracts, customer records and source code leave the device the instant you hit send, and a sent prompt can't be unsent.

## How Locke helps

Locke detects sensitive values when you send a prompt and masks them on your device before anything reaches OpenAI. The Early Access desktop app covers the OpenAI API too. That includes the Codex CLI, your own scripts and anything else on the machine that calls api.openai.com without opening a browser tab.

## Locke is free for one person

It runs on your device and masks sensitive data before a prompt is sent, on the AI tools it covers. Teams starts at $14.99 per seat a month.

[Download Locke](https://sonomos.ai/downloads/)[Talk to the team](https://sonomos.ai/contact/)

## Locke for other AI tools

- [Locke for Claude](https://sonomos.ai/for/claude/)
- [Locke for Gemini](https://sonomos.ai/for/gemini/)
- [Locke for GitHub Copilot](https://sonomos.ai/for/github-copilot/)
- [Locke for Cursor](https://sonomos.ai/for/cursor/)
- [Locke for Ollama](https://sonomos.ai/for/ollama/)
- [Locke for Perplexity](https://sonomos.ai/for/perplexity/)
- [Locke for Microsoft Copilot](https://sonomos.ai/for/microsoft-copilot/)

## Reading on ChatGPT

- [ChatGPT Temporary Chat: What It Actually Saves (and What It Doesn't) — 2026](https://sonomos.ai/blog/chatgpt-temporary-chat-privacy-2026/)
- [Can an Interviewer See Your ChatGPT or Claude History? How AI Use Actually Gets Discovered (2026)](https://sonomos.ai/blog/can-interviewers-see-chatgpt-claude-history-2026/)
- [ChatGPT API vs Consumer Tiers: The Real Privacy Differences in 2026](https://sonomos.ai/blog/chatgpt-api-vs-consumer-privacy-2026/)
- [Is ChatGPT GDPR Compliant? A 2026 Guide for European Teams](https://sonomos.ai/blog/is-chatgpt-gdpr-compliant-2026/)