Switching from ChatGPT to Hush: what changes and what doesn't
You already know how to use AI. You type a prompt, you get a response, you use it or refine it. If you are moving from ChatGPT to Hush, your prompts, your workflow and your expectations of what the AI can do carry over. What changes is what happens to the data.
This is a practical guide to switching: what stays the same, what is different, and how to do it in under five minutes.
What stays the same
- The interface: you type in a chat box, get a response, and iterate. The workflow is the same shape as ChatGPT, Claude, Gemini or any other chat-based AI.
- Your prompts: any prompt that works in ChatGPT works in Hush. Draft a letter, summarise a document, write a policy, explain a concept. The instruction is the same.
- Document handling: upload PDFs, Word documents, images. Ask questions about them, extract data, get summaries.
- Quality: Hush runs its own models on its own hardware. The drafting, summarisation and analysis quality is comparable to what you are used to.
What changes
| ChatGPT | Hush | |
|---|---|---|
| Data stored? | Conversations stored on OpenAI servers by default | Not stored on our servers; encrypted on your device |
| Training | Free tier: inputs can train models. Plus: opt-out available | Never. No tier, no setting, no exception |
| Infrastructure | US company, Azure/US cloud | UK company, own hardware, no US parent |
| Jurisdiction | US CLOUD Act applies | UK only. No US entity in the chain |
| Chat history | Stored on OpenAI servers | Encrypted on your device. One-click delete |
| Audit trail | No exportable audit log for compliance | One-click audit export (your property) |
| Account required | Yes, for everything | No. Chat is free with no account |
These are facts about each product's architecture and terms, not opinions about which is better for every use case. For personal, non-sensitive use, ChatGPT is a fine tool. For work that involves client data, patient data, employee data, or anything under a duty of confidence, the architecture differences matter. (For a deeper comparison, see our honest ChatGPT comparison, and the AI training checker for any tool's current terms.)
How to switch (the web app)
Step 1: Open Hush
Go to hush-ai.uk/app. No download, no install, no IT project. It runs in your browser.
Step 2: Start using it
Type a prompt. The same prompt you would type in ChatGPT. You will get a response. If you have documents to analyse, upload them the same way you would in ChatGPT.
That is the switch. There is no migration step because there is nothing to migrate. Your ChatGPT conversation history stays where it is (on OpenAI's servers). Your Hush conversations start fresh and stay on your device.
Step 3 (optional): Create an account
The free tier works with no account. If you want saved history, higher limits, documents, audio transcription and the full platform, sign in. Plans start at £39 per month, and every plan starts with a free trial, no card required.
How to switch (the API)
If you have code that calls the OpenAI API, switching to Hush is a one-line change:
# Python (openai library)
client = OpenAI(
api_key="your-hush-api-key",
base_url="https://hush-ai.uk/v1"
)
The Hush API is OpenAI-compatible. Your existing code, prompts and integrations work unchanged. Change the base URL and API key; everything else stays the same. Full documentation is on the developer pages.
What Hush does not have (yet)
We are honest about what we do not have, because we would rather you know before you switch than discover it after:
- Plugins and GPTs: ChatGPT has a marketplace of third-party plugins and custom GPTs. Hush has built-in tools (web search, document analysis, transcription, PDF editing, data analysis) but no third-party plugin marketplace.
- Image generation: Hush is a text and document AI. It does not generate images.
- Mobile app: Hush runs in your mobile browser. There is no native iOS or Android app. The browser experience is responsive and works on mobile.
These are gaps we may close over time. We list them because an honest product page lists what is missing, not just what is impressive.
The one thing to verify
Every claim on this page is checkable. Before putting real data through Hush, run the checks on our verify-us page. They take five minutes, require only a terminal and curl, and let you confirm for yourself that the TLS certificate, security headers and infrastructure are what we say they are. The company registration is at Companies House, the data controller registration at the ICO.
Try Hush in two minutes
Open Hush, type the prompt you would normally type in ChatGPT, and compare the response. No account needed. If it works for your use case and the privacy architecture matters to you, you have your answer.
Open Hush →About Hush AI: Hush AI (hush-ai.uk) is a private AI platform built by its founder, Dr W.J Carter. It runs on hardware we own in the UK, with no US parent and no third-party AI API. Conversations are not stored on our servers. Nothing is used for training. The API is OpenAI-compatible: change the base URL and API key, and existing code works unchanged.