Duck.ai (duck.ai) is DuckDuckGo's free AI chat tool. It requires no account, and DuckDuckGo acts as a middleman — removing your IP address and personal identifiers before forwarding your question to the AI model. Conversations are stored only in your browser and disappear when you close the tab.
If you have ever wanted to ask an AI a question but felt uneasy about creating yet another account and handing over your email address, Duck.ai was built for exactly that situation. It is DuckDuckGo's free AI chat tool — no signup, no password, no personal information required. You open the site and start talking.
What Makes Duck.ai Different
Most AI chatbots — ChatGPT, Gemini, Claude — require you to create an account before you can use them. That links your conversations to your identity, which means they can be used to train future AI models, stored for years, and tied to a profile that knows your name and email address.
Duck.ai works differently. DuckDuckGo acts as an intermediary between you and whichever AI model you choose. When you type a question, DuckDuckGo strips your IP address and personal identifiers before passing the message on to the AI provider. The provider — OpenAI, Anthropic, Mistral, or Tinfoil.sh depending on your model — receives your question, but without the information that would connect it back to you.
Your chat history stays in your browser only. It does not go to DuckDuckGo's servers. When you close the tab, the conversation is gone.
How to Use Duck.ai
Open duck.ai in any browser
Type duck.ai into your browser's address bar and press Enter. You do not need to download anything, install an extension, or create an account. The chat window loads immediately.
Choose an AI model
At the top of the chat window you will see a model selector. Free users can choose from several options:
- Claude 4.5 Haiku — fast responses, good for everyday questions
- GPT-5.4 nano — OpenAI's lightest model, very fast
- GPT-5.4 mini — OpenAI's capable and quick option
- Mistral Small 4 — a European-made open model
- gpt-oss-120b — open-source model hosted by Tinfoil.sh, strong for explanations
- Gemma 4 31B — open-source model hosted by Tinfoil.sh
If you are not sure where to start, Claude 4.5 Haiku or GPT-5.4 mini are solid choices for general use. Paid DuckDuckGo subscribers also get access to stronger models.
Type your question and press Enter
Just type normally — Duck.ai works like any other AI chatbot. Ask a question, read the answer, and follow up with more questions in the same conversation. There is no limit on back-and-forth within a single session.
"Explain to me in simple terms what a home equity loan is."
"What are some good questions to ask my doctor before starting a new medication?"
"Help me write a short thank-you note for a neighbor who watched my cat."
Switch models if the answer does not satisfy you
If a response from one model feels too short or misses the point, you can switch to a different model and ask the same question again. Each model has slightly different strengths. gpt-oss-120b often gives more detailed explanations; Claude 4.5 Haiku tends to be more concise. You can switch at any point during the conversation.
Close the tab when you are done
When you are finished, close the browser tab. Your conversation is not saved anywhere — it disappears from the session entirely. If you want to start a fresh conversation while the tab is still open, look for a "New Chat" button. The previous exchange is cleared.
Who Is Duck.ai Best For?
Duck.ai is a strong fit if you:
- Want to try AI without handing over an email address
- Are researching something private — a health concern, a financial question, a sensitive family situation — and do not want it linked to an account
- Have read about AI privacy and want a tool that puts those values into practice
- Just need a quick answer to a one-off question without setting up a new service
It is less suited for tasks that need the AI to remember you between sessions, work with uploaded files or images, search the web, or do anything more than text-based conversation. For those, ChatGPT or Gemini with an account are better equipped.
What to Watch Out For
Private from the provider does not mean invisible to everyone. Your browser history still records that you visited duck.ai. Anyone with access to your device — a family member, or your employer if you are on a work computer — can see that. Duck.ai shields your identity from OpenAI and Anthropic, not from people who can look at your screen or your browser history directly.
No memory means starting from scratch each time. There is no way to pick up yesterday's conversation. Some people work around this by copying and pasting a brief summary of the previous session into the opening message of the new one — something like "Last time we established that I am looking for a part-time remote job in marketing, and I have ten years of experience." That gives the AI enough context to continue helpfully.
Free models have real limits. Claude 4.5 Haiku and GPT-5.4 mini are capable, but they are not the most powerful models available. If you need deep analysis, long documents summarized, or nuanced writing feedback, the paid versions of ChatGPT or Claude will outperform what you get here for free.
Still read the privacy policy. DuckDuckGo's privacy commitments are public, readable, and better than most. But if you are handling genuinely sensitive information — legal, medical, or financial matters with real stakes — a conversation with an actual professional remains irreplaceable. Duck.ai can help you prepare smart questions to ask; it cannot replace the person who answers them.
What to Try Next
Knowing what Duck.ai keeps private is only half the picture — What You Should Never Tell an AI Chatbot covers the information you should hold back even from private tools. If you are already using ChatGPT and want to tighten up its privacy settings to bring it closer to Duck.ai's approach, How to Change Your ChatGPT Privacy Settings walks you through every option.
