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How to use OpenChatGPT

OpenChatGPT needs no account and no setup. This guide shows you how to start chatting and how to write prompts that get better answers.

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Start in 30 seconds

  1. Open the home page. You will see the chat box and eight example cards.
  2. Click an example card, or type your own question in the "Ask anything" box. Press Enter or tap the send button.
  3. Watch the reply stream in. When it finishes, you can copy it, ask a follow-up, or press Regenerate for a fresh version.
  4. Start a new topic with the "+ New chat" button. Your old chats stay in the sidebar on the same device until you delete them.

On a phone, tap the ☰ button at the top left to open the sidebar. You can send as many messages as you like, for free — there is no daily limit.

Write prompts that work

The quality of the answer depends on the quality of the question. Three habits make the biggest difference:

Example prompts

Try these, then adapt them to your own needs:

Tips by task

Writing

Ask for a draft, not a final copy. Tell the model the format, length, tone, and audience, then edit the result in your own words. For long pieces, ask for an outline first and expand it section by section.

Coding

Paste the exact error message and the code around it, and say which language and version you use. Ask the model to explain the fix, not just give it — you will learn more and spot mistakes in the answer.

Learning

Ask for an explanation at your level, then ask follow-ups: "Give me an example", "Quiz me with 5 questions", "What do beginners usually get wrong here?" Teaching the topic back to the model is one of the fastest ways to check your own understanding.

Planning

Give real constraints: budget, dates, time available, and what matters most to you. A plan built on your actual limits is far more useful than a generic one.

Build a complete website

You can build a whole website or app here, for free, without signing up. Describe what you want in plain words — for example: "Build me a complete multi-page website for a small bakery, with a homepage, a menu page and a contact page."

  1. Describe the site. Say what it is for, who it is for, and which sections it needs. The more specific you are, the closer the result is to what you imagined.
  2. Get the full files. The reply contains complete working code — full files, not fragments. You get a folder with separate pages and files — for example index.html, menu.html, contact.html, css/style.css and js/app.js — each complete and linked together. A single-page site is only built if you ask for one.
  3. Preview it. When the reply includes a complete HTML page, Preview and Download .html buttons appear under the message. Preview opens the page in a safe sandboxed window on this site; Download saves it as an .html file on your device.
  4. Ask for changes. Keep chatting in the same conversation: "Make the header dark blue", "Add a photo gallery section", "Make the menu a table". Each change builds on the last version.
  5. Use it anywhere. Use the Download all (.zip) button under the reply to save the whole project folder at once — the zip keeps the folder structure, so you can unzip it and upload it to your own hosting as it is. A downloaded .html file is yours to keep, edit in any text editor, or upload to your own hosting.

If a reply ever stops before the code is finished, just say "continue" — the model picks up where it stopped.

No questions first — just describe your idea

This site does not interrogate you. When you ask for a website or app, it does not ask four questions back about purpose, design, backend, or hosting — it picks sensible modern defaults and builds the full project straight away. You get a folder with the complete files, a Preview button to see the result, and a Download all (.zip) button that saves the whole folder with its structure intact. Afterwards, one short line tells you what was assumed — and you just keep chatting to change anything: "Make the header dark blue", "Add a contact form", "Use a different layout". No sign-up, no setup, no waiting.

Use it on your phone

OpenChatGPT works in any modern browser, so there is nothing to install on your phone. Open the site, and you get the same chat, the same history, and the same free messages. On a small screen, tap the ☰ button at the top left to open the sidebar with your chat history, and tap the ✕ button to close it again. The send button is large enough to tap comfortably, and the message box grows as you type, so long questions are easy to write. One tip: type in short lines and press Enter to send — if you need a line break inside your message, use Shift + Enter instead.

Your chats are stored in your phone's browser, not in an account, so they stay on that device. If you switch from your phone to your computer, your chats do not follow you — each device keeps its own history. That is worth knowing before you delete a chat on one device and expect it to be gone everywhere.

Get more from follow-ups

The first reply is rarely the final answer. The real skill of using an AI chat is the follow-up: a short message that steers the reply closer to what you need. Try these, in order, after any answer:

Follow-ups work because the chat remembers the conversation. Each message builds on the ones before it, so you never have to repeat the whole question. If you start a new topic, start a new chat with the "+ New chat" button — otherwise the old topic keeps leaking into the new answers.

Common mistakes

When the answer is wrong

AI models can be wrong while sounding completely sure. They can invent facts, dates, quotes, and sources that do not exist. If something in an answer looks off, correct it directly: "That date is wrong — it happened in 1947, not 1952. Try again." The model will usually adjust within the same chat. For anything important — an exam, a job application, a medical question, a money decision — check the key facts against a reliable source before you act on them. The AI disclosure explains what the models can and cannot do, and the FAQ answers the most common questions about trust and privacy.

Guides

Short, practical guides for getting more out of the chat:

Getting better answers

What to avoid

Do not type passwords, bank details, ID numbers, or medical records into the chat. Do not rely on AI answers for medical, legal, or financial decisions without checking a qualified professional. And remember that AI can invent facts that sound convincing — verify important claims from a reliable source. The AI disclosure and FAQ explain more.