DuckDuckGo AI Chat
#37 in AI Chat & Assistant
« Talk in total confidentiality with DuckDuckGo's AI. Your conversations are never recorded or used to train the AI (GPT-3.5 and Claude) »
ChatGPT 
Gemini AI 
Grok 4 
Duck.ai: private AI chat with six free models and zero sign-up
Updated on November 6, 2026
Duck.ai is DuckDuckGo's private AI chat service, built by the privacy-focused search company founded in 2008 by Gabriel Weinberg in Pennsylvania. It connects you to models from OpenAI, Anthropic, Mistral and open-source projects hosted by Tinfoil, all without creating an account. DuckDuckGo strips your IP address and personal metadata before every request reaches a provider, and none of your conversations are ever used for model training. The free tier runs on a daily limit; paid Plus ($9.99/mo) and Pro ($19.99/mo) plans unlock stronger models plus a VPN.
Pros
- Six free models from four separate providers
- No account required, IP fully stripped
- One-click 2nd opinion across models
- Encrypted voice chat via WebRTC
- Chat history stored locally, never on servers
Cons
- Unpublished daily cap on the free tier
- No memory or project continuity between sessions
- Help pages and UI available in English only
Models, voice and images inside Duck.ai
The free tier ships with six models: Claude Haiku 5.5, Mistral Small 4, GPT-6 Luna, GPT-5.4 mini, gpt-oss-120b and Gemma 4 31B. The last two run on Tinfoil's secure hardware enclaves, where even the host cannot read the prompt.
Beyond text, Duck.ai supports encrypted voice chat powered by an OpenAI model, image generation through a New Image button (daily quota applies) and file uploads. You can also trigger a web search mid-conversation or tap 2nd opinion to instantly compare another model's answer on the same prompt. Handy when you want a sanity check without opening a second tab.
Duck.ai tested across models, voice and image generation
Privacy under the hood
Duck.ai removes your IP address and identifying metadata before forwarding the request, so the provider sees DuckDuckGo, not you. Every provider operates under Zero Data Retention. OpenAI and Anthropic may keep exchanges in memory for up to one hour, never on disk; Tinfoil's trusted execution environment takes it further with zero provider visibility.
Recent Chats live on your device. The Fire Button wipes them, and you can pin up to five. DuckDuckGo itself retains only aggregate signals (timestamp, model, approximate country) with no personal identifier. This approach aligns with data anonymization by design, based on the commitments published in DuckDuckGo's help pages.
- IP and metadata stripped before every request
- Zero Data Retention at all providers (up to 1-hour memory cache at OpenAI/Anthropic)
- Contractual ban on training with chat data
- Conversations never stored server-side
Pricing, platforms and the no-AI option
Three tiers cover most situations. The free plan handles everyday questions; the subscriptions add more capable models, a VPN, Personal Information Removal (US only) and Identity Theft Restoration. Pro doubles the usage caps of Plus.
Duck.ai runs at duck.ai in any browser, inside the DuckDuckGo browser on Mac, Windows, iOS and Android, and through Duck.ai buttons embedded in DuckDuckGo search results. If you want no AI at all, a single toggle or noai.duckduckgo.com removes every AI feature from search. Prices shown below may change; check DuckDuckGo's site for the latest.
| Tier | AI models | Monthly price |
|---|---|---|
| Free | Claude Haiku 5.5, Mistral Small 4, GPT-6 Luna, GPT-5.4 mini, gpt-oss-120b, Gemma 4 31B | $0 |
| Plus | Free models + GPT-5.6 Terra, Claude Sonnet 5.5 | $9.99 |
| Pro | Plus models + Claude Opus 5.5, GPT-5.6 Sol (2x limits) | $19.99 |
Frequently asked questions
What is Duck.ai?
Duck.ai is DuckDuckGo's private AI chat. It gives free, account-free access to models from OpenAI, Anthropic, Mistral and open-source projects hosted by Tinfoil. DuckDuckGo strips your IP and personal metadata before each prompt reaches a provider, and no conversation is ever used to train the models.
Is Duck.ai free?
Yes. The free tier includes six models with no sign-up. A daily usage cap resets at midnight UTC. The Plus plan ($9.99/mo or $99.99/yr) and Pro plan ($19.99/mo or $199.99/yr) add advanced models like GPT-5.6 Terra, Claude Sonnet 5.5 and Claude Opus 5.5, along with higher limits and a VPN.
Is Duck.ai really private?
Per DuckDuckGo's help pages, your IP is removed, requests appear to come from DuckDuckGo, and every provider operates under Zero Data Retention. OpenAI and Anthropic may keep chats in memory for up to one hour. Tinfoil processes prompts inside a trusted execution environment with zero provider visibility.
Does DuckDuckGo use AI in its search results?
Optionally. Duck.ai buttons can appear in search results and in the DuckDuckGo browser, but both can be hidden in settings. A dedicated page, noai.duckduckgo.com, strips out AI-assisted answers, AI images and chat prompts entirely. DuckDuckGo states that its AI features do not track usage or store prompts.
Verdict: No sign-up, six models, your IP never leaving DuckDuckGo's hands: Duck.ai fits anyone who wants a quick, private AI conversation without feeding a profile. For longer projects that rely on memory and cross-session continuity, a dedicated ChatGPT or Claude account picks up where Duck.ai leaves off.
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